OCR Biology Unit 1 - Cells (Module 1) 4.5 / 5 based on 10 ratings ? BiologyCellular processes and structureASOCR Created by: PriyaCreated on: 10-12-12 17:38 What do plant cells have that animal cells don't? A cell wall, chloroplast, and a vacuole 1 of 14 What is the role of mitochondria in cells? The site of aerobic respiration (where ATP is produced) 2 of 14 Where does photosynthesis take place in chloroplast? In the grana and the stroma 3 of 14 What is the cytoskeleton? A network of protein threads which help with transport 4 of 14 What is the resolution of a light microscope, TEM, and SEM (micrometers)? 0.2, 0.0001, 0.0005 5 of 14 What is a difference between TEMs and SEMs? TEMs show 2-D images and SEMs show a 3-D surface 6 of 14 In the Fluid Mosaic structure, what is the role of a glycoprotein? Cell signalling and recognition, and the lipids act as receptor sites 7 of 14 How do cells communicate with each other by cell signalling? One cell releases a messenger molecule which then travels to another cell and binds to a receptor on its cell membrane 8 of 14 What is the difference between osmosis and diffusion? Osmosis involves water molecules and diffusion involves particles 9 of 14 What happens when an animal cell is placed in a hypotonic solution? Water moves into the cell and it bursts 10 of 14 What is an example of active transport in the cell? The active transport of calcium using a carrier protein 11 of 14 What are the products of mitosis? Two genetically identical daughter cells 12 of 14 What are the products of meiosis? Four genetically different daughter cells 13 of 14 What are stem cells? Unspecialised cells that are able to differentiate into any type of cell 14 of 14
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