Mrc Transport Across Membranes 2

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1. The phospholipid bilayer has cholesterol molecules embedded to stabilise the membrane. True or False?

True

False

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2. One of Ms Byrne's favourite sayings is: 'Everything in Biology is based on shape.' True or False?

True

False

3. Match the following

Cholesterol

Transmembrane proteins

Carbohydrate chains

Phospholipid

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4. Match the following

Active Transport

Facilitated Diffusion

Passive Diffusion

Osmosis

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5. Polar molecules;

Cross the membrane with protein channels and are not charged

Are charged molecules that require active transport to cross the membrane

Require facilitated diffusion to cross the membrane and a uncharged molecules

Are charged molecules and can cross the membrane with simple diffusion