PLASMA MEMBRANE

Which type of biological macromolecule is the main component of the plasma membrane?

• carbohydrate

• lipid

• protein

• nucleic acid

This image is an example of a phospholipid. Which part of a phospholipid is HYDROPHOBIC?

• the phosphate "head"

• the lipid "tails"

Where can carbohydrates be found when part of a plasma membrane?

• On the outside of the membrane

• On the inside of the membrane

• Embedded part of the way into the membrane

• Embedded the whole way through the membrane

• All of the above

Where can PROTEINS be found when part of a plasma membrane?

• On the outside of the membrane

• On the inside of the membrane

• Embedded part of the way into the membrane

• Embedded the whole way through the membrane

• All of the above

Tags

NGSS.MS-LS1-2

What is the function of cholesterol in a plasma membrane?

• To make the membrane flexible

• To control the effect of temperature changes

• To attract water molecules

• To allow nutrients and other essential molecules into the cell

Identify cholesterol molecule

• structure a

• structure b

• structure h

• structure i

identify a glycolipid

• structure a

• structure d

• structure e

• structure g

Plasma membranes are selectively permeable. This means

• anything can pass in and out

• the membrane regulates the passage of the material in and out of the cell

• glucose cannot enter the cell

• cholesterol cannot enter

Which is NOT a function of the membrane?

• it forms a selective barrier

• it has receptors for chemical messages

• it is the control center of the cell

• it is involved in self recognition

When doctors perform organ transplants, they choose a donor tissue match. Which component is being matched?

• membrane phospholipids

• cytoskeleton

• cell surface carbohydrates

• cholesterol