Module 7

Question 1

Cell membrane is also known as…

Answer 1

Plasma membrane

Question 2

One of the essential structures common to all cell types

Answer 2

Cell/plasma membrane

Question 3

Acts as a barrier that separates the cytoplasm from the cell’s outer surroundings

Answer 3

Cell membrane

Question 4

Cell membrane separates the cell’s outer surroundings from…

Answer 4

Cytoplasm

Question 5

Property of cell membrane that allows it to regulates what molecules will enter or leave the cell as needed

Answer 5

(It being) selectively permeable

Question 6

Receives and responds to external stimuli

Answer 6

Cell membrane

Question 7

The cell membrane is made up of four different molecules which are…

Answer 7

Phospholipid, proteins, cholesterol, and carbohydrates

Question 8

The cell membrane is composed of…

Answer 8

Phospholipid bilayer

Question 9

A two-layer of phospholipid oriented in opposite directions

Answer 9

Phospholipid bilayer

Question 10

A phospholipid molecule is made up of…

Answer 10

Glycerol molecule bonded to a phosphate “head” group and two fatty-acid “tails”

Question 11

What is the bond of the phosphate head end?

Answer 11

Polar covalent bond

Question 12

This word means attracted to water molecules

Answer 12

Hydrophillic

Question 13

This word means water-dreading or water-repelling

Answer 13

Hydrophobic

Question 14

This part of the phospholipid bilayer is hydrophillic

Answer 14

Phosphate head end

Question 15

This part of the phospholipid bilayer is hydrophobic

Answer 15

Tail end

Question 16

The tail end is made up of…

Answer 16

Two chains of fatty acids

Question 17

It means containing both hydrophilic and hydrophobic parts.

Answer 17

Amphiphilic/amphipathic

Question 18

This part of the phospholipid bilayer is left hidden in the middle

Answer 18

Tail end

Question 19

This part of the phospholipid bilayer faces the intracellular fluid on one layer and the extracellular on the other

Answer 19

Phosphate head group

Question 20

This specific property of the cell membrane allows only certain substances to pass through it

Answer 20

Selective permeability

Question 21

Can O2 and CO2 go into the cell? - Lesson on cell membrane

Answer 21

Yes

Question 22

Can glucose go into the cell? - Lesson on cell membrane

Answer 22

No

Question 23

Can small non-polar molecules go into the cell? - Lesson on cell membrane

Answer 23

Yes

Question 24

Can large polar molecules go into the cell?

Answer 24

No

Question 25

The cell membrane is also called the (1) — membrane and is made up of a phospholipid (2) —.

Answer 25

1. plasma; 2. bilayer

Question 26

The head of a phospholipid is made up of an (1) — and (2) — group.

Answer 26

1. alcohol; 2. phosphate

Question 27

The tails of a phospholipid are made up of chains of?

Answer 27

Fatty acid/lipids

Question 28

Phospholipids can move in what manner?

Answer 28

Sideways

Question 29

Head portion of the phospholipid

Answer 29

Phosphate