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AS Unit F211: Cells, Exchange and transport

Cell structure featus Endoplasmic recticumlum
Structure Function
Resolution Magnification
The endoplasmic In the RER the
Light 200nm x1,500 recticulum is a system ribosomes are made
microscope of fattened membrane- up of RNA and protein
bound sacs called and these are where
Transmission 0.1nm…

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AS Unit F211: Cells, Exchange and transport

Mitochondria
Nucleus
Structure Function
Structure Function
Have a sausage shape The outer membrane
They have a double is permeable to small
membrane. molecules, whereas Has a double The double membrane
The inner membrane is the inner membrane is membrane known as a is…

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AS Unit F211: Cells, Exchange and transport

The interrelationship between the organelles
involved in the production and secretion of proteins Whats in prokaryote
- mRNA copy the instruction(gene) for the hormone Always present
is made in the nucleus ·Cell wall
- mRNA leaves the nucleus through a nuclear pore ·Ribosomes…

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AS Unit F211: Cells, Exchange and transport

hydrophilic to pass through the bilayer so they immune systems because it has a
instead travel through the channel proteins. complimentary shape to that of the receptors
- Carrier proteins-actively ( using ATP) move on immune cells such as T-lymphocytes. They
substances through…

Page 5

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AS Unit F211: Cells, Exchange and transport

energy in the form of ATP. THey carry in the
opposite direction of the concentration Cells in solution of High water potential-
gradient. They move at a much faster rate than - Cell membrane is partially permeable
diffusion. - The water potential gradient…

Page 6

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AS Unit F211: Cells, Exchange and transport

Cells in a solution of low water potential Metaphase- The chromosomes move to the
The water gradient means water goes from central region of the spindle( the equator) and
inside the cell to outside by osmosis. each becomes attached to a spindle tread…

Page 7

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AS Unit F211: Cells, Exchange and transport

produced. Their role is ti ingest invading
The significance of mitosis for growth, repair microorganisms
and asexual reproduction in plants and
animals Differentiation in reference to xylem and
Growth- multicellular organisms grow by phloem
producing new cells. Each new cell is Xylem and…

Page 8

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AS Unit F211: Cells, Exchange and transport

surface area and allows it to absorb water and Cooperation between cell, tissues , organs
minerals from the soil. and organ systems
Guard Cells- in pairs on the lower epidermis. Multi-cellular organisms work effectively
Contain chloroplasts and cell wall contains because the have…

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