Cell transport.pptx
•
0 likes•5 views
Selective permeability of cell membranes depends on the solubility of molecules in the lipid bilayer and presence of transport proteins. Polar and ionic molecules cannot easily pass through the hydrophobic core of the membrane and require transport proteins. Transport proteins facilitate both passive transport down a concentration gradient and active transport against a gradient using ATP. Some examples of transport proteins are channels, carriers, and pumps like the sodium-potassium pump.
Report
Share
Report
Share
Recommended
membrane_structure_and_function.ppt
Membranes are fluid mosaics composed of lipids and proteins that allow for selective permeability. Membrane structure includes a lipid bilayer and integral or peripheral proteins. Membranes regulate the passage of substances through passive diffusion, facilitated transport, active transport, and cotransport. Water balance is maintained through osmosis. Membranes generate voltage through ion pumps and maintain concentration gradients through selective permeability.
membrane_structure_and_function.ppt
Membranes are fluid mosaics composed of lipids and proteins that allow for selective permeability. Membrane structure includes a lipid bilayer and integral or peripheral proteins. Membranes regulate the passage of substances through passive diffusion, facilitated transport, active transport, and cotransport. Water balance is maintained through osmosis. Membranes generate voltage through ion pumps and maintain concentration gradients through selective permeability.
membrane_structure_and_function.ppt
Membranes are fluid mosaics composed of lipids and proteins that allow for selective permeability. Membrane structure includes a lipid bilayer and integral or peripheral proteins. Passive transport mechanisms like diffusion and osmosis allow for movement down concentrations gradients. Active transport uses ATP to pump solutes against gradients. Transport proteins facilitate selective passage of solutes. Membranes are bifacial with distinct inner and outer compositions. Membrane proteins are oriented asymmetrically. Membranes regulate traffic through the cell via endocytosis and exocytosis.
Biological membranes and transport
The document summarizes key aspects of biological membranes and transport across membranes. It describes membranes as selectively permeable barriers composed of lipids and proteins. Transport can occur passively via diffusion, facilitated diffusion, and osmosis without energy expenditure. Active transport moves molecules against gradients and requires energy input via primary active transport using ATP or secondary active transport coupling to ion gradients. Larger molecules traverse membranes within vesicles through endocytosis and exocytosis.
membrane transport AIMC
Membrane transport can occur passively through diffusion, osmosis, and facilitated diffusion which do not require energy, or actively through processes like ion pumps, cotransporters, and endocytosis/exocytosis which do require energy. Passive transport moves molecules along concentration gradients while active transport moves molecules against gradients using cellular energy from ATP. Cell membranes regulate the passage of substances in and out of cells through selective permeability and various transport mechanisms.
Cell Membrane Transport/Factors/Transport of Substances
The gradient consists of two parts, the electrical potential and a difference in the chemical concentration across a membrane.
In biological processes, the direction an ion moves by diffusion or active transport across a membrane is determined by the electrochemical gradient.
Generally compound moves from an area of high concentration to low concentration (or concentration gradient). All compounds permeable to the phospholipid bilayer will move this way.
Transport across cell membrane, CELL MEMBRANE
Transport across cell membrane, Active transport, Active transport,
Types of passive transport-Diffusion, Filtration, Osmosis, Facilitated diffusion , Types of active transport antiport and symport
UNIT-I-cell transport.pptx
This document discusses various mechanisms of transport across cell membranes, including both passive and active transport. It describes the basic mechanisms of passive transport, such as simple diffusion through lipid and protein layers, facilitated diffusion, and special types of passive transport including bulk flow, filtration, and osmosis. Factors affecting the rate of diffusion like permeability, temperature, and concentration gradients are also covered. The document concludes by explaining active transport and various types of protein channels that regulate transport.
Recommended
membrane_structure_and_function.ppt
Membranes are fluid mosaics composed of lipids and proteins that allow for selective permeability. Membrane structure includes a lipid bilayer and integral or peripheral proteins. Membranes regulate the passage of substances through passive diffusion, facilitated transport, active transport, and cotransport. Water balance is maintained through osmosis. Membranes generate voltage through ion pumps and maintain concentration gradients through selective permeability.
membrane_structure_and_function.ppt
Membranes are fluid mosaics composed of lipids and proteins that allow for selective permeability. Membrane structure includes a lipid bilayer and integral or peripheral proteins. Membranes regulate the passage of substances through passive diffusion, facilitated transport, active transport, and cotransport. Water balance is maintained through osmosis. Membranes generate voltage through ion pumps and maintain concentration gradients through selective permeability.
membrane_structure_and_function.ppt
Membranes are fluid mosaics composed of lipids and proteins that allow for selective permeability. Membrane structure includes a lipid bilayer and integral or peripheral proteins. Passive transport mechanisms like diffusion and osmosis allow for movement down concentrations gradients. Active transport uses ATP to pump solutes against gradients. Transport proteins facilitate selective passage of solutes. Membranes are bifacial with distinct inner and outer compositions. Membrane proteins are oriented asymmetrically. Membranes regulate traffic through the cell via endocytosis and exocytosis.
Biological membranes and transport
The document summarizes key aspects of biological membranes and transport across membranes. It describes membranes as selectively permeable barriers composed of lipids and proteins. Transport can occur passively via diffusion, facilitated diffusion, and osmosis without energy expenditure. Active transport moves molecules against gradients and requires energy input via primary active transport using ATP or secondary active transport coupling to ion gradients. Larger molecules traverse membranes within vesicles through endocytosis and exocytosis.
membrane transport AIMC
Membrane transport can occur passively through diffusion, osmosis, and facilitated diffusion which do not require energy, or actively through processes like ion pumps, cotransporters, and endocytosis/exocytosis which do require energy. Passive transport moves molecules along concentration gradients while active transport moves molecules against gradients using cellular energy from ATP. Cell membranes regulate the passage of substances in and out of cells through selective permeability and various transport mechanisms.
Cell Membrane Transport/Factors/Transport of Substances
The gradient consists of two parts, the electrical potential and a difference in the chemical concentration across a membrane.
In biological processes, the direction an ion moves by diffusion or active transport across a membrane is determined by the electrochemical gradient.
Generally compound moves from an area of high concentration to low concentration (or concentration gradient). All compounds permeable to the phospholipid bilayer will move this way.
Transport across cell membrane, CELL MEMBRANE
Transport across cell membrane, Active transport, Active transport,
Types of passive transport-Diffusion, Filtration, Osmosis, Facilitated diffusion , Types of active transport antiport and symport
UNIT-I-cell transport.pptx
This document discusses various mechanisms of transport across cell membranes, including both passive and active transport. It describes the basic mechanisms of passive transport, such as simple diffusion through lipid and protein layers, facilitated diffusion, and special types of passive transport including bulk flow, filtration, and osmosis. Factors affecting the rate of diffusion like permeability, temperature, and concentration gradients are also covered. The document concludes by explaining active transport and various types of protein channels that regulate transport.
Membrane transport
Transport across the cell membrane can occur through diffusion, facilitated diffusion, or active transport. Diffusion is the passive movement of molecules down their concentration gradient through the lipid bilayer or protein channels. Facilitated diffusion uses carrier proteins to transport molecules down their concentration gradient. Active transport moves molecules against their gradient and requires ATP. The sodium-potassium pump is an example of primary active transport that pumps sodium out and potassium into cells.
Transport across membranes passive transport
The document discusses various mechanisms of passive transport across cell membranes, including:
- Simple diffusion, which allows small, nonpolar molecules like oxygen and carbon dioxide to passively diffuse across the membrane down their concentration gradients.
- Facilitated diffusion, which uses carrier proteins and channel proteins to transport molecules like glucose and ions. Carrier proteins undergo conformational changes while channel proteins form hydrophilic pores.
- Osmosis, which is the diffusion of water across a semipermeable membrane to equalize solute concentrations on both sides.
Cell Membrane And Transport system.pptx
The document discusses the structure and functions of the cell membrane. It describes the fluid mosaic model of the cell membrane, which is made up of a phospholipid bilayer. Factors like temperature and cholesterol content affect the fluidity of the membrane. The membrane acts as a selective barrier and allows transport through passive diffusion, facilitated diffusion, osmosis, and active transport like the sodium-potassium pump. It transports nutrients, waste, and sends signals to allow cell-cell communication and signaling.
Membrane transport final
The document discusses membrane transport and the structure and function of the cell membrane. It describes how the cell membrane maintains ion concentrations between the intracellular and extracellular fluids. Sodium and chloride ions are higher outside the cell, while potassium is higher inside. Membrane transport proteins, including carrier proteins and channel proteins, help move molecules across the membrane. Transport can occur through simple diffusion, facilitated diffusion using carrier proteins, or active transport requiring energy. Osmosis is discussed as the diffusion of water across the semipermeable membrane from an area of higher water concentration to lower concentration.
Transportation across cell membrane
This document summarizes various methods of transporting substances across cell membranes, including:
1. Passive transport mechanisms like simple diffusion, facilitated diffusion, and osmosis that move substances down concentration gradients without energy expenditure.
2. Active transport processes like primary and secondary active transport that move substances against concentration gradients using energy, usually from ATP hydrolysis.
3. Vesicular transport mechanisms of endocytosis and exocytosis that move substances in or out of cells within vesicles formed from the cell membrane.
Plasma membrane
The plasma membrane is a selectively permeable barrier that separates the cell from its external environment. It is composed of a phospholipid bilayer with embedded proteins. Phospholipids are amphipathic molecules with hydrophobic tails and hydrophilic heads that form a fluid bilayer. The fluid mosaic model describes membranes as a fluid structure with various proteins embedded within. Membranes exhibit selective permeability through diffusion, facilitated diffusion, and active transport. Active transport requires ATP and moves molecules against their concentration gradient. The sodium-potassium pump is an example of active transport that helps maintain membrane potential.
Mechanism of transport of small molecules across membrane.pptx
This document discusses mechanisms of transporting small molecules across cell membranes. It begins by explaining that while some molecules like oxygen and carbon dioxide can diffuse through lipid bilayers, charged and polar molecules require transport mechanisms. It then describes three main types of transport - passive transport down concentration gradients or electrochemical gradients, active transport using transporter proteins and ion pumps, and transport through ion channels. Specific examples are given of aquaporin water channels, glucose and sodium symporters, calcium and sodium pumps, and different gated ion channels. The role of the sodium-potassium pump and potassium leak channels in generating the resting membrane potential is also explained.
Tacm orig
This document discusses transport mechanisms across cell membranes. It begins by outlining the functions of cell membranes and then describes different transport mechanisms including:
1) Passive transport mechanisms like simple diffusion and facilitated diffusion
2) Active transport mechanisms like primary active transport which uses ATP (e.g. sodium-potassium pump) and secondary active transport which uses ion gradients created by primary transport
3) Endocytosis and exocytosis which transport larger particles into and out of cells respectively.
Tacm orig
This document discusses transport mechanisms across cell membranes. It begins by outlining the functions of cell membranes and then describes different transport mechanisms including:
1) Passive transport mechanisms like simple diffusion and facilitated diffusion
2) Active transport mechanisms like primary active transport which uses ATP (e.g. sodium-potassium pump) and secondary active transport which uses ion gradients created by primary transport
3) Endocytosis and exocytosis which transport larger particles into and out of cells respectively.
Tacm orig
This document discusses transport mechanisms across cell membranes. It begins by outlining the functions of cell membranes and then describes different transport mechanisms including:
1) Passive transport mechanisms like simple diffusion and facilitated diffusion
2) Active transport mechanisms like primary active transport which uses ATP (e.g. sodium-potassium pump) and secondary active transport which uses ion gradients created by primary transport
3) Endocytosis and exocytosis which transport larger particles into and out of cells respectively.
Transport across membrane
This document summarizes various mechanisms of transport across cell membranes. It discusses passive transport mechanisms like simple diffusion, facilitated diffusion, and osmosis which do not require energy. It also discusses active transport mechanisms like primary active transport which use energy in the form of ATP to transport molecules against their concentration gradient. These include protein pumps like the sodium-potassium pump. It describes other active transport mechanisms like secondary active transport which couple the transport of one substance to the transport of another. The document provides examples of different transport mechanisms and their biological significance for cellular function and homeostasis.
Presentation1 osmosis and diffusion
The cell membrane is composed of phospholipids, cholesterol, and proteins. It ranges from 7.5-10 nm thick and is only visible under an electron microscope. The cell membrane has several functions including being selectively permeable, acting as a physical barrier, allowing communication between cells, and establishing connections between cells. Transport across the cell membrane can occur through passive transport mechanisms like simple diffusion, facilitated diffusion, and osmosis. Active transport requires energy and moves molecules against their concentration gradient using carrier proteins like sodium-potassium pumps and proton pumps. Vesicular transport uses endocytosis and exocytosis to move larger molecules and vesicles across the membrane.
7 - Membrane Structue and Function
در زیست شناسی کمپبل با صراحت و روشنی ذکر شده است: "غشای پلاسمایی که سلول را احاطه کرده است را میتوان به عنوان لبه حیات دانست، مرزی که سلول زنده را از محیط اطراف خود جدا میکند." در این اسلاید، ما سعی میکنیم یاد بگیریم که چگونه غشای سلولی، عبور مواد مختلف را با اندازهها و ماهیت مختلف کنترل میکند.
---------------------------------------------------------------------------------------------
It is neatly mentioned in Campbell Biology: “The plasma membrane that surrounds the cell can be considered the edge of life, the boundary that separates a living cell from its surroundings.” In this slide, we try to learn how cellular membrane controls the passage of different substances of different size and nature.
Movement of Substances Across Membrane Plasma
This document discusses the structure and function of the plasma membrane. It notes that the plasma membrane is selectively permeable and controls what enters and exits the cell through passive and active transport mechanisms. The plasma membrane is made up of a phospholipid bilayer with integral and peripheral proteins. Passive transport mechanisms like simple diffusion, facilitated diffusion, and osmosis move substances down concentration gradients without energy expenditure. Active transport mechanisms move substances against concentration gradients using energy from ATP.
Chapter 6
The document summarizes the fluid mosaic model of cell membranes. It describes how phospholipids form a bilayer that acts as a fluid "lake" in which various proteins are embedded or float. This bilayer allows for selective permeability and passive diffusion of small molecules through the membrane. The document also discusses different types of membrane proteins, mechanisms of passive and active transport, and large molecule transport via endocytosis and exocytosis.
Lecture 4 Membrane Structure and Membrane Transport of Small Molecules PT_7.pdf
The document discusses membrane structure and transport of small molecules across membranes. It begins by introducing the roles and components of cell membranes, including defining compartments and regulating transport. The membrane is composed of lipids like phospholipids and cholesterol, as well as integral and peripheral proteins. Transport across membranes can occur through passive or active methods. Passive transport includes simple diffusion of small soluble molecules and facilitated diffusion using channel or carrier proteins to transport molecules down their concentration gradients without energy.
Cell membrane and transportation.pdf
This document discusses cell membrane transport. It begins by defining the components of the cell membrane, including the phospholipid bilayer and embedded proteins. It then describes different types of specialized cell membranes and membrane junctions that allow communication between cells. The document outlines two main methods of transport across the cell membrane: passive transport, which requires no energy, and active transport, which requires energy. It provides details on diffusion, osmosis, facilitated diffusion, and filtration as examples of passive transport. For active transport, it discusses solute pumping and bulk transport mechanisms like exocytosis and endocytosis.
The cell and Cell's Organells
The plasma membrane surrounds and protects the cell, and is made up of a lipid bilayer with embedded proteins. It regulates what passes in and out of the cell through diffusion, channels, carriers, and active transport. The cytoplasm contains organelles like the endoplasmic reticulum, ribosomes, Golgi apparatus, lysosomes, and mitochondria that carry out specialized functions. The nucleus houses the cell's DNA and directs protein synthesis. Together, these structures and transport mechanisms allow the cell to maintain homeostasis and carry out its functions.
shubham2-171117094952 (1).pdf
The document discusses biological membranes and their structure and function. It notes that membranes bound cells and intracellular compartments, act as selective barriers, and regulate cellular functions. Membranes are composed primarily of lipids and proteins. They use different transport mechanisms like passive diffusion, facilitated diffusion, and active transport to regulate the movement of substances in and out of cells and organelles. Larger molecules can also be transported through nuclear pore complexes via signal-mediated mechanisms. Endocytosis is another transport process where cells engulf fluids and particles through vesicles.
Biological Membrane
It's a Beautiful Topic name BIOLOGICAL MEMBRANE in which all detail information about cells and everything about cell is given.
Principal of Poultry breeding.pptx
The document provides information on principles of poultry breeding, breeding practices, cross breeding, disease management, and egg production and preservation. It discusses selecting suitable breeds for egg or meat production, proper breeding techniques, common poultry diseases like Ranikhet disease, fowl pox, and avian leucosis, and methods for preserving eggs like cooling, freezing and lime sealing.
Vitamins.pptx
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive function. Exercise causes chemical changes in the brain that may help protect against mental illness and improve symptoms.
More Related Content
Similar to Cell transport.pptx
Membrane transport
Transport across the cell membrane can occur through diffusion, facilitated diffusion, or active transport. Diffusion is the passive movement of molecules down their concentration gradient through the lipid bilayer or protein channels. Facilitated diffusion uses carrier proteins to transport molecules down their concentration gradient. Active transport moves molecules against their gradient and requires ATP. The sodium-potassium pump is an example of primary active transport that pumps sodium out and potassium into cells.
Transport across membranes passive transport
The document discusses various mechanisms of passive transport across cell membranes, including:
- Simple diffusion, which allows small, nonpolar molecules like oxygen and carbon dioxide to passively diffuse across the membrane down their concentration gradients.
- Facilitated diffusion, which uses carrier proteins and channel proteins to transport molecules like glucose and ions. Carrier proteins undergo conformational changes while channel proteins form hydrophilic pores.
- Osmosis, which is the diffusion of water across a semipermeable membrane to equalize solute concentrations on both sides.
Cell Membrane And Transport system.pptx
The document discusses the structure and functions of the cell membrane. It describes the fluid mosaic model of the cell membrane, which is made up of a phospholipid bilayer. Factors like temperature and cholesterol content affect the fluidity of the membrane. The membrane acts as a selective barrier and allows transport through passive diffusion, facilitated diffusion, osmosis, and active transport like the sodium-potassium pump. It transports nutrients, waste, and sends signals to allow cell-cell communication and signaling.
Membrane transport final
The document discusses membrane transport and the structure and function of the cell membrane. It describes how the cell membrane maintains ion concentrations between the intracellular and extracellular fluids. Sodium and chloride ions are higher outside the cell, while potassium is higher inside. Membrane transport proteins, including carrier proteins and channel proteins, help move molecules across the membrane. Transport can occur through simple diffusion, facilitated diffusion using carrier proteins, or active transport requiring energy. Osmosis is discussed as the diffusion of water across the semipermeable membrane from an area of higher water concentration to lower concentration.
Transportation across cell membrane
This document summarizes various methods of transporting substances across cell membranes, including:
1. Passive transport mechanisms like simple diffusion, facilitated diffusion, and osmosis that move substances down concentration gradients without energy expenditure.
2. Active transport processes like primary and secondary active transport that move substances against concentration gradients using energy, usually from ATP hydrolysis.
3. Vesicular transport mechanisms of endocytosis and exocytosis that move substances in or out of cells within vesicles formed from the cell membrane.
Plasma membrane
The plasma membrane is a selectively permeable barrier that separates the cell from its external environment. It is composed of a phospholipid bilayer with embedded proteins. Phospholipids are amphipathic molecules with hydrophobic tails and hydrophilic heads that form a fluid bilayer. The fluid mosaic model describes membranes as a fluid structure with various proteins embedded within. Membranes exhibit selective permeability through diffusion, facilitated diffusion, and active transport. Active transport requires ATP and moves molecules against their concentration gradient. The sodium-potassium pump is an example of active transport that helps maintain membrane potential.
Mechanism of transport of small molecules across membrane.pptx
This document discusses mechanisms of transporting small molecules across cell membranes. It begins by explaining that while some molecules like oxygen and carbon dioxide can diffuse through lipid bilayers, charged and polar molecules require transport mechanisms. It then describes three main types of transport - passive transport down concentration gradients or electrochemical gradients, active transport using transporter proteins and ion pumps, and transport through ion channels. Specific examples are given of aquaporin water channels, glucose and sodium symporters, calcium and sodium pumps, and different gated ion channels. The role of the sodium-potassium pump and potassium leak channels in generating the resting membrane potential is also explained.
Tacm orig
This document discusses transport mechanisms across cell membranes. It begins by outlining the functions of cell membranes and then describes different transport mechanisms including:
1) Passive transport mechanisms like simple diffusion and facilitated diffusion
2) Active transport mechanisms like primary active transport which uses ATP (e.g. sodium-potassium pump) and secondary active transport which uses ion gradients created by primary transport
3) Endocytosis and exocytosis which transport larger particles into and out of cells respectively.
Tacm orig
This document discusses transport mechanisms across cell membranes. It begins by outlining the functions of cell membranes and then describes different transport mechanisms including:
1) Passive transport mechanisms like simple diffusion and facilitated diffusion
2) Active transport mechanisms like primary active transport which uses ATP (e.g. sodium-potassium pump) and secondary active transport which uses ion gradients created by primary transport
3) Endocytosis and exocytosis which transport larger particles into and out of cells respectively.
Tacm orig
This document discusses transport mechanisms across cell membranes. It begins by outlining the functions of cell membranes and then describes different transport mechanisms including:
1) Passive transport mechanisms like simple diffusion and facilitated diffusion
2) Active transport mechanisms like primary active transport which uses ATP (e.g. sodium-potassium pump) and secondary active transport which uses ion gradients created by primary transport
3) Endocytosis and exocytosis which transport larger particles into and out of cells respectively.
Transport across membrane
This document summarizes various mechanisms of transport across cell membranes. It discusses passive transport mechanisms like simple diffusion, facilitated diffusion, and osmosis which do not require energy. It also discusses active transport mechanisms like primary active transport which use energy in the form of ATP to transport molecules against their concentration gradient. These include protein pumps like the sodium-potassium pump. It describes other active transport mechanisms like secondary active transport which couple the transport of one substance to the transport of another. The document provides examples of different transport mechanisms and their biological significance for cellular function and homeostasis.
Presentation1 osmosis and diffusion
The cell membrane is composed of phospholipids, cholesterol, and proteins. It ranges from 7.5-10 nm thick and is only visible under an electron microscope. The cell membrane has several functions including being selectively permeable, acting as a physical barrier, allowing communication between cells, and establishing connections between cells. Transport across the cell membrane can occur through passive transport mechanisms like simple diffusion, facilitated diffusion, and osmosis. Active transport requires energy and moves molecules against their concentration gradient using carrier proteins like sodium-potassium pumps and proton pumps. Vesicular transport uses endocytosis and exocytosis to move larger molecules and vesicles across the membrane.
7 - Membrane Structue and Function
در زیست شناسی کمپبل با صراحت و روشنی ذکر شده است: "غشای پلاسمایی که سلول را احاطه کرده است را میتوان به عنوان لبه حیات دانست، مرزی که سلول زنده را از محیط اطراف خود جدا میکند." در این اسلاید، ما سعی میکنیم یاد بگیریم که چگونه غشای سلولی، عبور مواد مختلف را با اندازهها و ماهیت مختلف کنترل میکند.
---------------------------------------------------------------------------------------------
It is neatly mentioned in Campbell Biology: “The plasma membrane that surrounds the cell can be considered the edge of life, the boundary that separates a living cell from its surroundings.” In this slide, we try to learn how cellular membrane controls the passage of different substances of different size and nature.
Movement of Substances Across Membrane Plasma
This document discusses the structure and function of the plasma membrane. It notes that the plasma membrane is selectively permeable and controls what enters and exits the cell through passive and active transport mechanisms. The plasma membrane is made up of a phospholipid bilayer with integral and peripheral proteins. Passive transport mechanisms like simple diffusion, facilitated diffusion, and osmosis move substances down concentration gradients without energy expenditure. Active transport mechanisms move substances against concentration gradients using energy from ATP.
Chapter 6
The document summarizes the fluid mosaic model of cell membranes. It describes how phospholipids form a bilayer that acts as a fluid "lake" in which various proteins are embedded or float. This bilayer allows for selective permeability and passive diffusion of small molecules through the membrane. The document also discusses different types of membrane proteins, mechanisms of passive and active transport, and large molecule transport via endocytosis and exocytosis.
Lecture 4 Membrane Structure and Membrane Transport of Small Molecules PT_7.pdf
The document discusses membrane structure and transport of small molecules across membranes. It begins by introducing the roles and components of cell membranes, including defining compartments and regulating transport. The membrane is composed of lipids like phospholipids and cholesterol, as well as integral and peripheral proteins. Transport across membranes can occur through passive or active methods. Passive transport includes simple diffusion of small soluble molecules and facilitated diffusion using channel or carrier proteins to transport molecules down their concentration gradients without energy.
Cell membrane and transportation.pdf
This document discusses cell membrane transport. It begins by defining the components of the cell membrane, including the phospholipid bilayer and embedded proteins. It then describes different types of specialized cell membranes and membrane junctions that allow communication between cells. The document outlines two main methods of transport across the cell membrane: passive transport, which requires no energy, and active transport, which requires energy. It provides details on diffusion, osmosis, facilitated diffusion, and filtration as examples of passive transport. For active transport, it discusses solute pumping and bulk transport mechanisms like exocytosis and endocytosis.
The cell and Cell's Organells
The plasma membrane surrounds and protects the cell, and is made up of a lipid bilayer with embedded proteins. It regulates what passes in and out of the cell through diffusion, channels, carriers, and active transport. The cytoplasm contains organelles like the endoplasmic reticulum, ribosomes, Golgi apparatus, lysosomes, and mitochondria that carry out specialized functions. The nucleus houses the cell's DNA and directs protein synthesis. Together, these structures and transport mechanisms allow the cell to maintain homeostasis and carry out its functions.
shubham2-171117094952 (1).pdf
The document discusses biological membranes and their structure and function. It notes that membranes bound cells and intracellular compartments, act as selective barriers, and regulate cellular functions. Membranes are composed primarily of lipids and proteins. They use different transport mechanisms like passive diffusion, facilitated diffusion, and active transport to regulate the movement of substances in and out of cells and organelles. Larger molecules can also be transported through nuclear pore complexes via signal-mediated mechanisms. Endocytosis is another transport process where cells engulf fluids and particles through vesicles.
Biological Membrane
It's a Beautiful Topic name BIOLOGICAL MEMBRANE in which all detail information about cells and everything about cell is given.
Similar to Cell transport.pptx (20)
Mechanism of transport of small molecules across membrane.pptx
Mechanism of transport of small molecules across membrane.pptx
Lecture 4 Membrane Structure and Membrane Transport of Small Molecules PT_7.pdf
Lecture 4 Membrane Structure and Membrane Transport of Small Molecules PT_7.pdf
More from Nikhil Borode
Principal of Poultry breeding.pptx
The document provides information on principles of poultry breeding, breeding practices, cross breeding, disease management, and egg production and preservation. It discusses selecting suitable breeds for egg or meat production, proper breeding techniques, common poultry diseases like Ranikhet disease, fowl pox, and avian leucosis, and methods for preserving eggs like cooling, freezing and lime sealing.
Vitamins.pptx
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive function. Exercise causes chemical changes in the brain that may help protect against mental illness and improve symptoms.
General charecter of phylum annelid.pptx
Oligochaetes are hermaphroditic segmented worms that live in terrestrial or freshwater habitats. They have specialized digestive and reproductive systems. There are two main groups, megadriles like earthworms and microdriles that are mostly aquatic. Oligochaetes have 100 to 175 segments and lack eyes but have light-sensitive organs near their ends. They are metamerically segmented with bilateral symmetry, chitinous setae, and closed circulatory and complete digestive systems.
urinogenital system.pptx
The urogenital system includes both the reproductive and excretory organs. The excretory system includes the kidneys, ureters, urinary bladder, and urethra. The kidneys function to eliminate wastes and regulate water balance and pH. They are bean-shaped organs located in the abdominal region. The urogenital system also includes the male and female reproductive organs. In males this includes the testes and male genital ducts which produce and transport sperm. In females the ovaries produce eggs which are released into the oviducts.
Sensory receptor.pptx
Sensory receptors help organisms learn about their external and internal environments by detecting stimuli and converting them into electrochemical signals in the nervous system. There are different types of sensory receptors including neurons and specialized cells. Sensory receptors are often associated with surrounding nonneural cells that form sense organs. Receptors are adapted to respond to particular forms of energy at low thresholds. Sensory receptors are classified based on whether they detect external or internal stimuli and what type of stimulus energy they detect such as mechanical, electromagnetic, or chemical.
Scale and horn.pptx
The document discusses the integumentary system, which is the outer protective covering of vertebrates composed of skin and its derivatives like scales and hair. The integumentary system performs important functions like protection, respiration, temperature control, nourishment of young, and locomotion. It defines and protects the boundaries of organisms, allowing them to interact with their environments. Among vertebrates, the integumentary system has become highly complex with additional structures like scales, feathers, and hair evolving. The document then discusses the different types of scales found in fish, reptiles, and other organisms.
Evolution of arotic arches.pptx
1) In vertebrate embryos, the major arterial channels are the ventral and dorsal aortas, connected by 6 pairs of aortic arches.
2) The aortic arches undergo modifications from lower to higher vertebrates as respiration shifts from gills to lungs. Lower vertebrates like fish retain more pairs of arches, while mammals and birds retain only 3 pairs.
3) In terrestrial vertebrates, the 3 remaining arches are the 3rd, 4th, and 6th arches, connected to the divided ventricle. The 4th arch forms the systemic artery and the 6th forms the pulmonary trunk.
Comparative anatomy of heart.pptx
The circulatory system transports fluids like blood and lymph through vessels and channels. The blood vascular system is a closed system in vertebrates with a contractile heart and continuous vessels. The heart receives blood via veins and pumps it into arteries to transport blood to organs like the lungs. Fish hearts have two chambers, an auricle and ventricle. Amphibian hearts have two auricles and one ventricle. Reptile hearts show improvement over amphibians with separated auricles and a partially divided ventricle. Bird hearts are large and four-chambered with separated pulmonary and systemic circulation. Mammal hearts are fully four-chambered.
respiratory pigment.pptx
The document discusses respiratory pigments, which are colored molecules that increase the oxygen carrying capacity of blood. It defines respiratory pigments and lists their key characteristics, including being colored, having an affinity for respiratory gases, and containing a metallic ion. The document then discusses 10 specific types of respiratory pigments and provides details on hemoglobin, including its chemical structure, composition of globin and heme, and reactions it undergoes when treated with acids.
Respiratory Disorder.pptx
The document summarizes various respiratory infections including:
1. Upper respiratory infections like the common cold caused mainly by rhinoviruses and influenza.
2. Lower respiratory infections like pneumonia, bronchitis, asthma, and tuberculosis.
3. It describes the symptoms, causes, risk factors, and treatments for these respiratory infections.
Mechanism of respiration.pptx
This document discusses the mechanism of respiration through four steps: pulmonary ventilation, external respiration, transport of gases in blood, and internal respiration. It describes the mechanics of breathing through inspiration and expiration, important pressures involved, muscles used for inspiration like the diaphragm and expiration like the internal intercostals. Boyle's law relating gas pressure and volume in the lungs is also mentioned.
Protoplasmic Theory.pptx
1. Protoplasm is the living substance found within cells that is responsible for carrying out life processes.
2. It is a gel-like material composed of water, proteins, fats, carbohydrates, and inorganic salts.
3. Protoplasm's physical properties are due to the various chemical inclusions suspended within it, which allow it to shift between solid and liquid states.
Prokaryotic and Eukaryotic Cell.pptx
All living things are made of cells. Organisms can be either unicellular, consisting of a single cell, or multicellular, made up of many cells. Prokaryotes are unicellular microorganisms that lack a nucleus and membrane-bound organelles, while eukaryotes can be either unicellular or multicellular and have a nucleus and membrane-bound organelles, making them generally larger and more complex than prokaryotes.
Compostion and structure of plasma membrane.pptx
The document discusses the structure and functions of plasma membranes. It first describes how membrane models have evolved over time to incorporate new data and defines membranes as a fluid mosaic of lipids and proteins. It then outlines different mechanisms of molecular transport across membranes, including passive diffusion, osmosis, active transport, cotransport, and exocytosis/endocytosis. Specific details covered include how the fluid mosaic model describes membranes, general membrane characteristics like fluidity, and how proteins are integrated into the membrane structure.
Cell Organnels.ppt
This document describes the structure and function of various cell organelles including the nucleus, rough and smooth endoplasmic reticulum, ribosomes, Golgi apparatus, mitochondria, chloroplasts, lysosomes, cytoplasm, cytoskeleton, cell membrane, cell wall, and vacuoles. It notes that eukaryotic plant and animal cells contain these organelles, while prokaryotic cells lack membrane-bound organelles. The organelles work together to carry out important functions for the cell like protein synthesis, energy production, transport of materials, photosynthesis, waste disposal, and more.
More from Nikhil Borode (16)
Recently uploaded
Beyond Degrees - Empowering the Workforce in the Context of Skills-First.pptx
Iván Bornacelly, Policy Analyst at the OECD Centre for Skills, OECD, presents at the webinar 'Tackling job market gaps with a skills-first approach' on 12 June 2024
বাংলাদেশ অর্থনৈতিক সমীক্ষা (Economic Review) ২০২৪ UJS App.pdf
বাংলাদেশের অর্থনৈতিক সমীক্ষা ২০২৪ [Bangladesh Economic Review 2024 Bangla.pdf] কম্পিউটার , ট্যাব ও স্মার্ট ফোন ভার্সন সহ সম্পূর্ণ বাংলা ই-বুক বা pdf বই " সুচিপত্র ...বুকমার্ক মেনু 🔖 ও হাইপার লিংক মেনু 📝👆 যুক্ত ..
আমাদের সবার জন্য খুব খুব গুরুত্বপূর্ণ একটি বই ..বিসিএস, ব্যাংক, ইউনিভার্সিটি ভর্তি ও যে কোন প্রতিযোগিতা মূলক পরীক্ষার জন্য এর খুব ইম্পরট্যান্ট একটি বিষয় ...তাছাড়া বাংলাদেশের সাম্প্রতিক যে কোন ডাটা বা তথ্য এই বইতে পাবেন ...
তাই একজন নাগরিক হিসাবে এই তথ্য গুলো আপনার জানা প্রয়োজন ...।
বিসিএস ও ব্যাংক এর লিখিত পরীক্ষা ...+এছাড়া মাধ্যমিক ও উচ্চমাধ্যমিকের স্টুডেন্টদের জন্য অনেক কাজে আসবে ...
Traditional Musical Instruments of Arunachal Pradesh and Uttar Pradesh - RAYH...
Traditional Musical Instruments of Arunachal Pradesh and Uttar Pradesh
Pengantar Penggunaan Flutter - Dart programming language1.pptx
Pengantar Penggunaan Flutter - Dart programming language1.pptx
BÀI TẬP BỔ TRỢ TIẾNG ANH LỚP 9 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2024-2025 - ...
BÀI TẬP BỔ TRỢ TIẾNG ANH LỚP 9 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2024-2025 - ...Nguyen Thanh Tu Collection
https://app.box.com/s/tacvl9ekroe9hqupdnjruiypvm9rdaneBed Making ( Introduction, Purpose, Types, Articles, Scientific principles, N...
Topic : Bed making
Subject : Nursing Foundation
Walmart Business+ and Spark Good for Nonprofits.pdf
"Learn about all the ways Walmart supports nonprofit organizations.
You will hear from Liz Willett, the Head of Nonprofits, and hear about what Walmart is doing to help nonprofits, including Walmart Business and Spark Good. Walmart Business+ is a new offer for nonprofits that offers discounts and also streamlines nonprofits order and expense tracking, saving time and money.
The webinar may also give some examples on how nonprofits can best leverage Walmart Business+.
The event will cover the following::
Walmart Business + (https://business.walmart.com/plus) is a new shopping experience for nonprofits, schools, and local business customers that connects an exclusive online shopping experience to stores. Benefits include free delivery and shipping, a 'Spend Analytics” feature, special discounts, deals and tax-exempt shopping.
Special TechSoup offer for a free 180 days membership, and up to $150 in discounts on eligible orders.
Spark Good (walmart.com/sparkgood) is a charitable platform that enables nonprofits to receive donations directly from customers and associates.
Answers about how you can do more with Walmart!"
Your Skill Boost Masterclass: Strategies for Effective Upskilling
Your Skill Boost Masterclass: Strategies for Effective UpskillingExcellence Foundation for South Sudan
Strategies for Effective Upskilling is a presentation by Chinwendu Peace in a Your Skill Boost Masterclass organisation by the Excellence Foundation for South Sudan on 08th and 09th June 2024 from 1 PM to 3 PM on each day.Hindi varnamala | hindi alphabet PPT.pdf
हिंदी वर्णमाला पीपीटी, hindi alphabet PPT presentation, hindi varnamala PPT, Hindi Varnamala pdf, हिंदी स्वर, हिंदी व्यंजन, sikhiye hindi varnmala, dr. mulla adam ali, hindi language and literature, hindi alphabet with drawing, hindi alphabet pdf, hindi varnamala for childrens, hindi language, hindi varnamala practice for kids, https://www.drmullaadamali.com
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2023-2024 (CÓ FI...
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2023-2024 (CÓ FI...Nguyen Thanh Tu Collection
https://app.box.com/s/y977uz6bpd3af4qsebv7r9b7s21935vdRecently uploaded (20)
Film vocab for eal 3 students: Australia the movie
Film vocab for eal 3 students: Australia the movie
Beyond Degrees - Empowering the Workforce in the Context of Skills-First.pptx
Beyond Degrees - Empowering the Workforce in the Context of Skills-First.pptx
বাংলাদেশ অর্থনৈতিক সমীক্ষা (Economic Review) ২০২৪ UJS App.pdf
বাংলাদেশ অর্থনৈতিক সমীক্ষা (Economic Review) ২০২৪ UJS App.pdf
Traditional Musical Instruments of Arunachal Pradesh and Uttar Pradesh - RAYH...
Traditional Musical Instruments of Arunachal Pradesh and Uttar Pradesh - RAYH...
Liberal Approach to the Study of Indian Politics.pdf
Liberal Approach to the Study of Indian Politics.pdf
Pengantar Penggunaan Flutter - Dart programming language1.pptx
Pengantar Penggunaan Flutter - Dart programming language1.pptx
BÀI TẬP BỔ TRỢ TIẾNG ANH LỚP 9 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2024-2025 - ...
BÀI TẬP BỔ TRỢ TIẾNG ANH LỚP 9 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2024-2025 - ...
Bed Making ( Introduction, Purpose, Types, Articles, Scientific principles, N...
Bed Making ( Introduction, Purpose, Types, Articles, Scientific principles, N...
Walmart Business+ and Spark Good for Nonprofits.pdf
Walmart Business+ and Spark Good for Nonprofits.pdf
Your Skill Boost Masterclass: Strategies for Effective Upskilling
Your Skill Boost Masterclass: Strategies for Effective Upskilling
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2023-2024 (CÓ FI...
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2023-2024 (CÓ FI...
NEWSPAPERS - QUESTION 1 - REVISION POWERPOINT.pptx
NEWSPAPERS - QUESTION 1 - REVISION POWERPOINT.pptx
Cell transport.pptx
- 1. Topic: Cell Transport Prepared By: Nikhil A. Borode Assistant Professor Department of Zoology
- 2. Traffic Across Membranes Selective permeability depends on solubility characteristics of the lipid bilayer, and presence of specific integral proteins
- 3. Permeability of the Lipid Bilayer NONPOLAR Molecules • Dissolve in membranes, cross with ease • Smaller of 2 will cross faster POLAR Molecules • Small, polar, uncharged molecules can slip through • Larger, polar, uncharged will not get through easily (glucose) • All ions have trouble getting through hydrophobic layer
- 4. Transport Proteins • Hydrophilic Substances like ions and moderately sized polar molecules can avoid going through the hydrophobic core of the membrane by going through transport proteins • Integral membrane proteins that transport specific ions or molecules across the membrane. They may provide a hydrophilic tunnel or may bind to, and physically carry a substance across. These are specific
- 5. Some Functions of Membrane Proteins
- 6. Proteins Facilitate Passive Transport • Facilitated Diffusion: specific transport proteins help solutes diffuse across membrane • Is passive transport (down conc. Gradient) • Helps many polar molecules/ions get through the lipid bilayer • SPECIFIC-Have binding site like active site • Can be saturated with solute: rate limited • Can be due to conformational changes • Can be gated channels
- 7. ACTIVE TRANSPORT • Endergonic process by which a transport protein pumps a molecule across a membrane AGAINST its concentration gradient. • These maintain concentration gradients across membranes • Use ATP as energy source. • Ex. Sodium-Potassium Pump
- 10. MEMBRANE POTENTIAL • Voltage across membranes happens when anions/cations are unequally distributed across cell membranes • Potential ranges from -50 to -200 mv • Negative sign indicates the inside of the cell is – charged. • Affects traffic of charged subs. across membrane, favors diffusion of anions out, cations in.
- 11. Passive Transport of Ions Depends On: • Concentration gradient of the Ion • Effect of the membrane potential of the ion • The Electrochemical Gradient is the diffusion gradient created from the combined effects of both of the above