Cell and Molecular Biology
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| show | 1) Control of entry and exit of materials
2) Isolate organelles and enzymes for metabolic reactions
3) Provide an internal transport system
4) Provide surfaces on which processes can occur
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| What is the role of extrinsic (peripheral) proteins in a membrane? | show 🗑
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| What is the role of intrinsic (integral) proteins in a membrane? | show 🗑
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| show | Fluid - due to the ability of the phospholipids and protein molecules to move relative to each other. The membrane is flexible.
Mosaic - due to the varying shape, size and pattern of the proteins in the bilayer.
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| List the roles of phospholipids in cell surface membranes. | show 🗑
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| show | 1) Reduce lateral movement of phospholipids
2) Regulate membrane fluidity depending on temperature
3) Prevent passage of dissolved polar molecules and ions across the membrane
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| List the roles of glycolipids in cell surface membranes. | show 🗑
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| List the roles of glycoproteins in cell surface membranes. | show 🗑
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| List the roles of proteins in cell surface membranes. | show 🗑
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| show | Active transport
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| Name of transport processes which do not require energy. | show 🗑
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| What is diffusion? | show 🗑
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| show | The even distribution of particles which are continuously in motion/changing position.
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| What is facilitated diffusion? | show 🗑
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| show | Channel proteins
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| show | Carrier proteins
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| What is osmosis? | show 🗑
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| What is a solute? | show 🗑
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| What is a solvent? | show 🗑
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| show | solute + solvent
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| show | A solution with more water than solute
ie. a higher water potential
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| What is a hypertonic solution? | show 🗑
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| show | A solution with equal concentration of solute and water.
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| T or F. There is always a net movement of water from a hypotonic solution to a hypertonic solution. | show 🗑
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| What is active transport? | show 🗑
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| Describe 5 key features of active transport. | show 🗑
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| show | Diffusion and osmosis
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| show | Facilitated diffusion
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| show | Active transport
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| What is endocytosis? | show 🗑
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| What is exocytosis? | show 🗑
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| show | 1) Phagocytosis
2) Pinocytosis
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CAPE Biology Unit 1
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