McGrath CPA 2023-24: Membrane, Diffusion, Facilitated Diffusion

Question 1

A phospholipid is an example of which macromolecule?

Accepted Answer

Lipids

Question 2

What would be true of a solution with a high concentration of sugar?

Accepted Answer

there is a lot of sugar in the solution

Question 3

moves with the gradient

Accepted Answer

passive

Question 4

Cholesterol in the bilayer functions to

Accepted Answer

Provide structural support and flexibility

Question 5

I am the hydrophilic end of the phospholipid. Water and I can bond easily.

Accepted Answer

Phosphate Head

Question 6

Facilitated diffusion requires:

Accepted Answer

A membrane embedded protein

Question 7

What is a phospholipid composed of?

Accepted Answer

A polar head and 2 nonpolar tails

Question 8

Down the Gradient

Accepted Answer

Passive Transport

Question 9

"A" is

Accepted Answer

a polar phosphate head

Question 10

Simple Diffusion

Accepted Answer

Moves particles from high to low concentration

Question 11

Facilitated diffusion is

Accepted Answer

passive transport

Question 12

"E" is

Accepted Answer

cholesterol

Question 13

What is essential for simple diffusion?

Accepted Answer

a concentration gradient

Question 14

What kind of transport doesn't require the use of energy to move materials across the membrane?

Accepted Answer

all of these don't require the cell to use energy

Question 15

What molecules in the phospholipid bilayer serve as identification tags for the cell?

Accepted Answer

Carbohydrates

Question 16

What is facilitated diffusion?

Accepted Answer

Diffusion through a protein in the cell membrane

Question 17

Equilibrium is reached

Accepted Answer

when particles are evenly distributed through the space.

Question 18

Carbohydrate chains in the plasma membrane are used as identification tags for the cell.

Accepted Answer

True

Question 19

Which would most likely cross the cell membrane by simple diffusion?

Accepted Answer

CO2

Question 20

movement with the gradient

Accepted Answer

passive transport

Question 21

To cross by simple diffusion, molecules must be ...

Accepted Answer

small

Question 22

"B" is

Accepted Answer

a nonpolar lipid tail

Question 23

What is the purpose of proteins in the bilayer?

Accepted Answer

Help move substances in/out of the cell

Question 24

Movement of particles from an area of high concentration to an area of lower concentration is:

Accepted Answer

simple diffusion

Question 25

Proteins in the bilayer regulate traffic across the membrane

Accepted Answer

True

Question 26

The heads of the phospholipid are

Accepted Answer

Hydrophilic

Question 27

Which of the processes shown below illustrates simple diffusion?

Accepted Answer

1

Question 28

Another name for the cell membrane is

Accepted Answer

the plasma membrane

Question 29

The primary function of the cell membrane is

Accepted Answer

to control what moves in and out of the cell.

Question 30

Facilitated diffusion __________.

Accepted Answer

moves down the concentration gradient

Question 31

What molecules are imbedded in the membrane phospholipid bilayer?

Accepted Answer

proteins

Question 32

I dislike water. I am the hydrophobic end of the phospholipid.

Accepted Answer

Lipid tails

Question 33

Describe the orientation of the phospholipids in the membrane.

Accepted Answer

Phospholipids orient in bilayer with hydrophilic heads on exterior

Question 34

The stuff that is dissolved is the _________.

Accepted Answer

solute

Question 35

The stuff that does the dissolving is the __________.

Accepted Answer

solvent

Question 36

Diffusion, osmosis, and facilitated diffusion are examples of

Accepted Answer

passive transport

Question 37

Moving material down the gradient...

Accepted Answer

Is done with simple diffusion

Question 38

What is the role of carbohydrates in the phospholipid bilayer?

Accepted Answer

Cellular identification/recognition

Question 39

Facilitated diffusion __________.

Accepted Answer

moves down the concentration gradient

Question 40

Cholesterols in the bilayer are found

Accepted Answer

Among the nonpolar tail regions

Question 41

Passive transport

Accepted Answer

doesn't require energy., moves particles from a high to a low concentration.

Question 42

Facilitated diffusion

Accepted Answer

Does not require energy input

Question 43

What type of particle does (simple) diffusion move?

Accepted Answer

Gases

Question 44

What is concentration?

Accepted Answer

amount of something in a given area

Question 45

Which of these is selectively permeable?

Accepted Answer

all of these are selectively permeable

Question 46

Which best describes simple diffusion

Accepted Answer

molecules move down concentration gradient

Question 47

What kind of solution is the red blood cell on the right in?

Accepted Answer

hypertonic

Question 48

What is structure "D"?

Accepted Answer

a protein

Question 49

The function of cholesterol in the bilayer membrane is

Accepted Answer

to maintain stability

Question 50

This organelle contains phospholipids and is found on the outside of all animal cells

Accepted Answer

cell membrane

Question 51

The basic structure of the cell membrane is

Accepted Answer

a phospholipid bilayer.

McGrath CPA 2023-24: Membrane, Diffusion, Facilitated Diffusion

Questions 51

McGrath CPA 2023-24: Membrane, Diffusion, Facilitated Diffusion

Questions 51