The document provides information about cell biology, specifically transport across the cell membrane. It discusses:
1. The structure and functions of the cell membrane, including the phospholipid bilayer, proteins, glycoproteins, glycolipids, and cholesterol.
2. Types of transport across the membrane, including passive transport processes like diffusion, osmosis, and facilitated transport, as well as active transport processes.
3. Factors that affect the rate of diffusion and the effects of different external environments (hypertonic, isotonic, hypotonic) on osmosis in cells.
cell biology topic transport across cell membrane. transport of important structures accross plasma mebrane of different types of cell in humans. structure and function of cell membane
KEY CONCEPTS
7.1 Cellular membranes are fluid mosaics of lipids and proteins
7.2 Membrane structure results in selective permeability
7.3 Passive transport is diffusion of a substance across a
membrane with no energy investment
7.4 Active transport uses energy to move solutes against their gradients
7.5 Bulk transport across the plasma membrane occurs by exocytosis and endocytosis
cell biology topic transport across cell membrane. transport of important structures accross plasma mebrane of different types of cell in humans. structure and function of cell membane
KEY CONCEPTS
7.1 Cellular membranes are fluid mosaics of lipids and proteins
7.2 Membrane structure results in selective permeability
7.3 Passive transport is diffusion of a substance across a
membrane with no energy investment
7.4 Active transport uses energy to move solutes against their gradients
7.5 Bulk transport across the plasma membrane occurs by exocytosis and endocytosis
Transport of biomolecules across cell membraneMohan Raj
The diffusion of water through the plasma membrane is of such importance to the cell that it is given a special name: osmosis. This page will examine how ions and small molecules are transported across cell membranes. The transport of macromolecules through membranes is described in Endocytosis.
This presentation contains the introduction to the structure of plasma membrane. This gives an insight into the biochemistry of the plasma membrane and the singer and nicholsan model.
This presentation is all about cell membrane transport. It contain different ways of transport of different substances in and out of cell membrane, along with active and passive mechanism.
The cell membrane (also known as the plasma membrane or cytoplasmic membrane) is a biological membrane that separates the interior of all cells from the outside environment. The cell membrane is selectively permeable to ions and organic molecules and controls the movement of substances in and out of cells.The basic function of the cell membrane is to protect the cell from its surroundings. It consists of the phospholipid bilayer with embedded proteins. Cell membranes are involved in a variety of cellular processes such as cell adhesion, ion conductivity and cell signalling and serve as the attachment surface for several extracellular structures, including the cell wall, glycocalyx, and intracellular cytoskeleton.
This presentation include different kind of transport mechanism of different material inside the cell and outside the cell including Passive transport and Active transport mechenism.
Transport of biomolecules across cell membraneMohan Raj
The diffusion of water through the plasma membrane is of such importance to the cell that it is given a special name: osmosis. This page will examine how ions and small molecules are transported across cell membranes. The transport of macromolecules through membranes is described in Endocytosis.
This presentation contains the introduction to the structure of plasma membrane. This gives an insight into the biochemistry of the plasma membrane and the singer and nicholsan model.
This presentation is all about cell membrane transport. It contain different ways of transport of different substances in and out of cell membrane, along with active and passive mechanism.
The cell membrane (also known as the plasma membrane or cytoplasmic membrane) is a biological membrane that separates the interior of all cells from the outside environment. The cell membrane is selectively permeable to ions and organic molecules and controls the movement of substances in and out of cells.The basic function of the cell membrane is to protect the cell from its surroundings. It consists of the phospholipid bilayer with embedded proteins. Cell membranes are involved in a variety of cellular processes such as cell adhesion, ion conductivity and cell signalling and serve as the attachment surface for several extracellular structures, including the cell wall, glycocalyx, and intracellular cytoskeleton.
This presentation include different kind of transport mechanism of different material inside the cell and outside the cell including Passive transport and Active transport mechenism.
The cell membrane, or plasma membrane, is a biological membrane that separates the interior of all cells from the outside environment.
The cell membrane is selectively permeable to ions and organic molecules and controls the movement of substances in and out of cells.
Cell for teaching by pandian M tutor, Dept of Physiology, DYPMCKOP, this ppt ...Pandian M
The cell
Common characteristics of cell –
Typical cell under light microscope
Cell organelles –
6 main types of organelles
Mitochondria
Endocytosis
Receptor mediated endocytosis
Phagocytosis
Functional systems of the cell—
Intercellular connections or junctions
Basic mechanism of transport
References
in this notes we will study and learn about
cell membrane
parts of cell membrane
different formation of cell membrane
lipids present in cell membrane
function of cell membrane
RMD24 | Debunking the non-endemic revenue myth Marvin Vacquier Droop | First ...BBPMedia1
Marvin neemt je in deze presentatie mee in de voordelen van non-endemic advertising op retail media netwerken. Hij brengt ook de uitdagingen in beeld die de markt op dit moment heeft op het gebied van retail media voor niet-leveranciers.
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Memorandum Of Association Constitution of Company.pptseri bangash
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A Memorandum of Association (MOA) is a legal document that outlines the fundamental principles and objectives upon which a company operates. It serves as the company's charter or constitution and defines the scope of its activities. Here's a detailed note on the MOA:
Contents of Memorandum of Association:
Name Clause: This clause states the name of the company, which should end with words like "Limited" or "Ltd." for a public limited company and "Private Limited" or "Pvt. Ltd." for a private limited company.
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Registered Office Clause: It specifies the location where the company's registered office is situated. This office is where all official communications and notices are sent.
Objective Clause: This clause delineates the main objectives for which the company is formed. It's important to define these objectives clearly, as the company cannot undertake activities beyond those mentioned in this clause.
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Liability Clause: It outlines the extent of liability of the company's members. In the case of companies limited by shares, the liability of members is limited to the amount unpaid on their shares. For companies limited by guarantee, members' liability is limited to the amount they undertake to contribute if the company is wound up.
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Capital Clause: This clause specifies the authorized capital of the company, i.e., the maximum amount of share capital the company is authorized to issue. It also mentions the division of this capital into shares and their respective nominal value.
Association Clause: It simply states that the subscribers wish to form a company and agree to become members of it, in accordance with the terms of the MOA.
Importance of Memorandum of Association:
Legal Requirement: The MOA is a legal requirement for the formation of a company. It must be filed with the Registrar of Companies during the incorporation process.
Constitutional Document: It serves as the company's constitutional document, defining its scope, powers, and limitations.
Protection of Members: It protects the interests of the company's members by clearly defining the objectives and limiting their liability.
External Communication: It provides clarity to external parties, such as investors, creditors, and regulatory authorities, regarding the company's objectives and powers.
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Binding Authority: The company and its members are bound by the provisions of the MOA. Any action taken beyond its scope may be considered ultra vires (beyond the powers) of the company and therefore void.
Amendment of MOA:
While the MOA lays down the company's fundamental principles, it is not entirely immutable. It can be amended, but only under specific circumstances and in compliance with legal procedures. Amendments typically require shareholder
Tata Group Dials Taiwan for Its Chipmaking Ambition in Gujarat’s DholeraAvirahi City Dholera
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Business Valuation Principles for EntrepreneursBen Wann
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Enterprise Excellence is Inclusive Excellence.pdfKaiNexus
Enterprise excellence and inclusive excellence are closely linked, and real-world challenges have shown that both are essential to the success of any organization. To achieve enterprise excellence, organizations must focus on improving their operations and processes while creating an inclusive environment that engages everyone. In this interactive session, the facilitator will highlight commonly established business practices and how they limit our ability to engage everyone every day. More importantly, though, participants will likely gain increased awareness of what we can do differently to maximize enterprise excellence through deliberate inclusion.
What is Enterprise Excellence?
Enterprise Excellence is a holistic approach that's aimed at achieving world-class performance across all aspects of the organization.
What might I learn?
A way to engage all in creating Inclusive Excellence. Lessons from the US military and their parallels to the story of Harry Potter. How belt systems and CI teams can destroy inclusive practices. How leadership language invites people to the party. There are three things leaders can do to engage everyone every day: maximizing psychological safety to create environments where folks learn, contribute, and challenge the status quo.
Who might benefit? Anyone and everyone leading folks from the shop floor to top floor.
Dr. William Harvey is a seasoned Operations Leader with extensive experience in chemical processing, manufacturing, and operations management. At Michelman, he currently oversees multiple sites, leading teams in strategic planning and coaching/practicing continuous improvement. William is set to start his eighth year of teaching at the University of Cincinnati where he teaches marketing, finance, and management. William holds various certifications in change management, quality, leadership, operational excellence, team building, and DiSC, among others.
Implicitly or explicitly all competing businesses employ a strategy to select a mix
of marketing resources. Formulating such competitive strategies fundamentally
involves recognizing relationships between elements of the marketing mix (e.g.,
price and product quality), as well as assessing competitive and market conditions
(i.e., industry structure in the language of economics).
16. Note: Lack of permeability to ions sets up membrane potential (See C11: Nerve transmission).
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20. Some have channels/gates/pores to allow passage of H 2 O, dissolved ions, and small molecules.
21. Some are receptors that a specific molecule can bind to, e.g. hormones such as insulin, thyroxin, aldosterone, estrogen, testosterone etc. or neurotransmitters such as acetylcholine (ACh), norepinephrine (NE). http://www.mhhe.com/biosci/genbio/espv2/data/cells/003/index.html
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25. Note: Cytoskeleton (Recall Unit B1) is an internal framework of protein fibres that gives the cytoplasm strength and flexibility and provides movement of organelles. Some protein filaments attaches to the integral proteins of the CM. Attachment of the Cytoskeleton
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28. Summary of Cell Membrane Structures and Functions Amino acids Allows/selects certain molecules in/out of cell through channels/gates/pores . E.g. H 2 O, O 2 , CO 2 , ions. Carries molecules selectively in/out of cell by carriers. E.g. Na + , K + , C 6 H 12 O 6 , áá’s, HCO 3 - , Ca 2+ . Proteins Unit molecules Functions Molecules
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30. Backbone of 4 fused C-H rings Stiffen CM and provide flexibility Cholesterol Chains of carbohydrates attached to lipid or protein (a) Used in cell identification . (b) Glycoproteins can form a carbohydrate coat that envelops the cell membrane (glycocalyx). Glycolipids and Glycoproteins 2 fatty acids (saturated/ unsaturated) & 1 glycerol, N and phosphate group (a) Allows for diffusion of lipid soluble molecules. E.g. O 2 , CO 2 , and alcohol. (b) Allows for flexibility & fluidity of cell membrane. E.g. Vesicle formation. (c) Excludes H 2 O and ions. (d) Acts as a boundary keeping organelles within the cell. Phospholipids
44. examples of lab equipment which demonstrate diffusion and osmosis, i.e. the osmometer and U-tube apparatus .
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62. Isotonic If the concentration of solute (salt) is equal on both sides, water will move back in forth but it won't have any result on the overall amount of water on either side. " ISO " means the same.
63. Hypotonic " HYPO " means less. There are less solute (salt) molecules outside the cell, which causes water to move into the cell by osmosis (high to low). The cell will gain water & grow larger. In plant cells, the central vacuole will fill and the plant becomes stiff and rigid, i.e. turgor. The cell wall keeps the plant from bursting. In human animal cells, the cell is in danger of lysis or bursting.
67. Isotonic 95% H 2 0 5% salt 95% H 2 O 5% salt Isotonic Solution 95% H 2 O 5% salt H 2 O moves in/out of red blood cells (RBC) at equal rates and the shape remains as biconcave.
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71. Example of a RBC placed in a hypotonic solution . RBC shape in the beginning of the experiment? After 2 minutes?
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73. Hypertonic H 2 O moves OUT of the RBC’s by osmosis causing it to shrivel and undergo crenation .
101. Ions, sugars, and amino acids. Carrier protein and ATP energy towards higher concentration active Active Transport Water 0nly. Concentration gradient, channel proteins optional towards lower concentration passive Osmosis Water, glucose, and amino acids. Concentration gradient, plus channel or carrier proteins towards lower concentration passive Facilitated Diffusion Water, gases (0 2 and CO 2 ), and steroid hormones. Concentration gradient towards lower concentration passive Diffusion Examples Conditions Direction of Movement Type of Transport Name Comparison of the ways molecules move into & out of cells.