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BIO181 chapter 3

Authored by Chloe Combs

Biology

University

NGSS covered

Used 6+ times

BIO181 chapter 3
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33 questions

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1.

MULTIPLE SELECT QUESTION

1 min • 1 pt

Media Image

How does the fluid-mosaic model describe bilayers?

Polar heads of phospholipids face inward and nonpolar tails face outward

molecules are in constant movement

A rigid double-layer of phospholipids

proteins carbohydrates, and other lipids interact with the bilayer

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

What molecule is circled within the bilayer?

phospholipid

carbohydrate

cholesterol

protein

3.

MULTIPLE SELECT QUESTION

1 min • 1 pt

In what ways can individual phospholipids move within a bilayer?

diffusion across bilayer

lateral movement

rotation in place

Exchange of phospholipids between the two membranes

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Ability of molecules and ions to cross the membrane

diffusion

permeability

fluidity

lateral movement

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Membranes with higher fluidity are more permeable

True

False

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

A lipid bilayer with made of unsaturated fatty acids is less permeable

True

False

7.

MULTIPLE SELECT QUESTION

1 min • 1 pt

Factors that increase fluidity and permeability

short fatty acid tails

compact fatty acids within a membrane

low temperature

unsaturated fatty acids

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