Mr Exham IGCSE - Movement In And Out Of Cellsmrexham
This is a presentation designed to help explain the section of the Edexcel IGCSE Biology course about movement in and out of cells. For more help with IGCSE Biology please visit mrexham.com
Cell - cell structure - Tissues, Organ systems and organisms (IGCSE Biology)Vasiliki Makrygianni
Presentation on the Cell structure, organelles, tissues, organ systems and organisms. Designed for IGCSE Cambridge Biology
Added sample exam style questions to test your knowledge at the end of the slides.
Mr Exham IGCSE - Movement In And Out Of Cellsmrexham
This is a presentation designed to help explain the section of the Edexcel IGCSE Biology course about movement in and out of cells. For more help with IGCSE Biology please visit mrexham.com
Cell - cell structure - Tissues, Organ systems and organisms (IGCSE Biology)Vasiliki Makrygianni
Presentation on the Cell structure, organelles, tissues, organ systems and organisms. Designed for IGCSE Cambridge Biology
Added sample exam style questions to test your knowledge at the end of the slides.
This is the first PowerPoint in the mrexham IGCSE Biology series. It is also available on iBooks.
It covers the Cells section from life processes of the Edexcel IGCSE Biology course
Characteristics and classification of living organisms igcse o level 0610tilawat khan
The slides is about lesson characteristic and classification of living organism .
Course IGCSE O level Biology 0610
By Tilawat khan microbiology
Email:tk.microbiologist@gmail.com
Edexcell Biology;
Most year 10 & 11 syllabus points by ppt.
Used in lessons to scaffold class teaching and as a revision resource for students
These resources are from many sources
This is a presentation designed to help explain the section of the Edexcel IGCSE Biology course about respiration. For more help with IGCSE Biology please visit mrexham.com
This is a presentation designed to help explain the section of the Edexcel IGCSE Biology course about classification in the variety of living organisms section. For more help with IGCSE Biology please visit mrexham.com
IGCSE Biology 0610 - Introduction to Biology - Characteristics of living orga...Vasiliki Makrygianni
IGCSE Biology 0610/ Syllabus 2020-2022/
Coursebook: Cambridge IGCSE Biology Coursebook (third edition), Mary Jones and Geoff Jones, Cambridge University Press.
note: free to share and use ...is designed for level B1-B2. cheers,...
This is the first PowerPoint in the mrexham IGCSE Biology series. It is also available on iBooks.
It covers the Cells section from life processes of the Edexcel IGCSE Biology course
Characteristics and classification of living organisms igcse o level 0610tilawat khan
The slides is about lesson characteristic and classification of living organism .
Course IGCSE O level Biology 0610
By Tilawat khan microbiology
Email:tk.microbiologist@gmail.com
Edexcell Biology;
Most year 10 & 11 syllabus points by ppt.
Used in lessons to scaffold class teaching and as a revision resource for students
These resources are from many sources
This is a presentation designed to help explain the section of the Edexcel IGCSE Biology course about respiration. For more help with IGCSE Biology please visit mrexham.com
This is a presentation designed to help explain the section of the Edexcel IGCSE Biology course about classification in the variety of living organisms section. For more help with IGCSE Biology please visit mrexham.com
IGCSE Biology 0610 - Introduction to Biology - Characteristics of living orga...Vasiliki Makrygianni
IGCSE Biology 0610/ Syllabus 2020-2022/
Coursebook: Cambridge IGCSE Biology Coursebook (third edition), Mary Jones and Geoff Jones, Cambridge University Press.
note: free to share and use ...is designed for level B1-B2. cheers,...
A powerpoint designed for the South African Life Sciences syllabus for grade 11. Includes information about blood and it's transportation, the human heart, the lymph system etc. Hope it helps :)
Exposes the elementary science student to the idea there are three major kinds of soil found on earth as well as the very important remains of dead plants and animals called humus. Discusses soil and humus along with as some of the properties of each.
Describe how a selectively permeable membrane is involved in osmosis.pdfarjunanenterprises
Describe how a selectively permeable membrane is involved in osmosis. Include the role that the
solute concentration plays in the direction of water movement. Now think about how this process
may differ between plant and animal cells. For instance, how might cell walls disrupt the role of
solute concentration and cause one to refute a hypothesis for the direction of water movement
based on water concentration alone?
Solution
Let me first briefly descibe you how does osmosis happen. Consider there are two compartments
contaning a particular solute in a solvent seperated by a semi permeable membrane. If there
exists a solute difference between the two compartments, then solvent moves from the region of
lower conceration (with respect to solute) to higher concentration (with respect to solute) until it
reaches equilibrium. That means semi permeable membrane is permeable to solvent. Now comes
the situation of in vivo (i.e., within the body). The cells, whether from animals or plants are
usually hypertonic in nature that means cells have higher ionic concentration compared to its
external environment (water is the solvent). Then how do these cells maintain such a higher ionic
concentration by refuting the process of osmosis/diffusion. First let us consider the plant cell.
Plant cell has two coverages, namely plasma membrane and cell wall. Cell wall in plant cell is
made up of cellulose and cellulose is a polysacharide provides the rigidity to the cells. Actually,
it is the plasma membrane which does not allow the movement of water molecules to cross based
on gradient of solutes. Let me talk about the cell wall at the end of this answer. What makes that
plasma membrane to refute the law of osmosis ? It is its structural organization. Plasma
membrane is made up of phospholipids, cholesterol and proteins mainly. Phospholipids are
oriented in bilayer form facing its hydrophilic (water loving) head at both the ends interacing
with cytoplasma and extracellular environment and its hydrophobic (water hating) tails are
oriented deep within the membrane interacing each other. Plasma membrane of either plant or
animal are highly impermeable to the solutes and water. Permeability of plasma membrane
highly depends on the nature of solutes. If solute is smaller in size and hydrophobic in nature it
diffuses through the membrane quiet easily but it is difficult for the hydrophilic and largge size
solutes. Charge of the solutes also plays the major role. It is not only based on the concentration
gradient but also based on charge gradient. Hence it is known as electrochemical gradient. It is
actually a beautiful mechanism of cells to produce energy required for the cell based on
electrochemical gradient (within mitochondria) And for water, it is difficult to pass through.
There is a term called \"Activation energy\". Energy need to be supplied in order to facilitate the
movement of solutes.Lower the activation energy, lesser the energy required and vica versa.
Comi.
This slide presentations contains about the transport system of the cell.
*selective permeability
*diffusion
*osmosis
*the cell environment
(isotonic, hypotonic, hypertonic solutions)
*active transport
*passive transport (facilitated diffusion)
This is a little complicated presentation on Diffusion.I have made this to give ideas to students as to help them in making a new one.This is specially made for the students of 9th and 10th.You must see this and learn to make something new.
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
For more information, visit-www.vavaclasses.com
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdfTechSoup
In this webinar you will learn how your organization can access TechSoup's wide variety of product discount and donation programs. From hardware to software, we'll give you a tour of the tools available to help your nonprofit with productivity, collaboration, financial management, donor tracking, security, and more.
Normal Labour/ Stages of Labour/ Mechanism of LabourWasim Ak
Normal labor is also termed spontaneous labor, defined as the natural physiological process through which the fetus, placenta, and membranes are expelled from the uterus through the birth canal at term (37 to 42 weeks
Acetabularia Information For Class 9 .docxvaibhavrinwa19
Acetabularia acetabulum is a single-celled green alga that in its vegetative state is morphologically differentiated into a basal rhizoid and an axially elongated stalk, which bears whorls of branching hairs. The single diploid nucleus resides in the rhizoid.
A Strategic Approach: GenAI in EducationPeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Introduction to AI for Nonprofits with Tapp NetworkTechSoup
Dive into the world of AI! Experts Jon Hill and Tareq Monaur will guide you through AI's role in enhancing nonprofit websites and basic marketing strategies, making it easy to understand and apply.
2. DIFFUSION
All molecules move about. In gaseous state, they
are widespread and with weak bonds holding them
together. In liquid state, they are closer with
stronger bonds holding them together. In solids they
are very close and could only vibrate in their place.
3. NOW PUT UP YOUR HAND AS SOON AS YOU
CAN DETECT THE SMELL OF THE AIR
FRESHENER.
4. WHAT DO YOU NOTICE?
Who were the first to detect the smell?
Who were last to detect the smell?
Why isn’t there anyone who did not detect the
smell?
Explain how you could smell the scent although you
are far away from the air freshener.
What if we opened the door or window? Would
others outside be able to smell the scent?
6. WHAT WOULD MAKE MOLECULES
MOVE/SPREAD OUT FASTER OR SLOWER?
Temperature
Stirring/ air currents
Number of molecules
Surface area
Distance/ thickness of membrane
Difference between molecule concentration in both
areas
7. DIFFUSION
Is the movement of molecules from a
region of high concentration to a
region of low concentration down a
concentration gradient.
8. OSMOSIS
A special type of diffusion involving the movement
of water molecules only, through a partially
permeable membrane.
Partially permeable membrane is a membrane
with small holes that can allow only small molecules
to pass through.
11. OSMOSIS
Is the movement of water molecules
from a dilute solution (high water
potential) to a concentrated solution
(low water potential) through a partially
permeable membrane.
A cell membrane is a partially permeable
membrane.
12. WHAT HAPPENS TO ANIMAL CELLS IF THEY WERE
PLACED IN A SOLUTION OF A DIFFERENT
CONCENTRATION THAN OF THEIR CYTOPLASM?
14. OSMOSIS IN PLANT CELLS.
Water enters a plant
cell, the water
molecules put pressure
on the walls. The rigid
cell wall will prevent the
cell from bursting. This
plant cell is said to be
turgid.
This keeps the plant
firm.
15. OSMOSIS IN PLANT CELLS
When water leaves the
plant cell the elastic
cell membrane shrinks,
while the rigid cell wall
keeps the shape of the
cell fixed. This plant
cell is said to be
plasmolysed.
16. ACTIVE TRANSPORT
In some situations, there is a need to move
molecules from a region of low concentration to a
region of high concentration.
A root hair cell needs to take in minerals from the
soil, even if the concentration in the soil is lower
than that in the cells.
10