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Ch. 5 Biological Membranes

Total questions: 58

Worksheet time: 46mins

Name
Class
Date
1.
A ______________ is composed of a phosphate and glycerol head and 2 fatty acid chain tails. 
a)
phospholipid 
b)
Carbohydrate
c)
Cholesterol 
d)
Protein 
2.
"Water Loving"
a)
Hydrophobic
b)
Hydrophilic 
c)
Hydroelectric 
d)
Hydroloric
3.
"Water Fearing" 
a)
Hydrophobic
b)
Hydrophilic 
c)
Hydroelectric 
d)
Hydroloric
4.
The majority of the cell membrane is made of which macromolecule?
a)
Lipids
b)
Carbs
c)
Proteins
d)
Nucleic acids
5.
How many layers thick is the lipid bilayer?
a)
1
b)
2
c)
3
d)
4
6.
Hydrophobic region of the cell membrane?
a)
E
b)
B
c)
C
d)
A 
7.
Hydrophilic portion of cell membrane?
a)
A
b)
C
c)
D
d)
E 
8.
Which of the following states that the cell membrane isn't rigid (it is moveable)?
a)
Phospholipid Bilayer
b)
Fluid Mosaic Model
c)
Selectively Permeable Membrane
9.
Cell membrane allows some things to pass freely and others to not
a)
Phospholipid Bilayer
b)
Selectively Permeable Membrane
c)
Fluid Mosaic Model
10.
___________ strengthens and stabilizes the cell membrane.
a)
Carbohydrates 
b)
Proteins 
c)
Phospholipids 
d)
Cholesterol
11.

The type of transport that requires the use of transport proteins

a)

Passive Transport

b)

Facilitated Diffusion

c)

Active Transport

d)

Vesicular Transport

12.

The passage of a substance from an area of high concentration to an area of low concentration

a)

Active Transport

b)

Diffusion

c)

Vesicular Transport

d)

Exocytosis

13.

Some cells move large particles out of the cell through the process of:

a)

Protein Synthesis

b)

Endocytosis

c)

Exocytosis

d)

Cytoplasmic Streaming

14.

Transport proteins for water are called:

a)

Glu-T

b)

Sodium-Potassium Pump

c)

Aquaporins

d)

Cohesive Channels

15.

Transport that occurs directly across the cell membrane

a)

Vesicular Transport

b)

Active Transport

c)

Facilitated Diffusion

d)

Passive Transport

16.

The energy molecule that powers some modes of transport

a)

ADP

b)

ATP

c)

AGP

d)

ABP

17.

A water box divided with a membrane has 60 mg of salt placed on the right. What will happen?

a)

Water will move to the left.

b)

Salt will move to the right.

c)

Water will move to the right.

d)

Salt will move to the left.

18.

What term that describes the phosphate head of a phospholipid?

a)

Fluid

b)

Hydrophilic

c)

Mosaic

d)

Hydrophobic

19.

Identify the molecule that spans the entire width of a cell membrane

a)

Peripheral protein

b)

Integral protein

c)

Cholesterol

d)

Phospholipid

20.

The Plasma membrane mainly consists of

a)

Proteins embedded in carbohydrate-lipid layer

b)

Proteins embedded in a carbohydrate bilayer

c)

Proteins embedded in a phospholipid layer

d)

Proteins embedded in a lipid molecules

21.

According to the Fluid mosaic model, the quasi-fluid nature of the lipids enable

a)

Lateral movement of carbohydrates within the bilayer.

b)

Lateral movement of proteins within the bilayer.

c)

Free movement of lipids within the bilayer.

d)

Free movement of ions within the bilayer

22.

Plasma membranes are selectively permeable. This means

a)

anything can pass in and out

b)

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

c)

glucose cannot enter the cell

d)

cholesterol cannot enter

23.

'Which one is the hydrophilic (water-loving) portion of the plasma membrane that can mix with water?

a)

A

b)

B

24.

'Which one is the hydrophobic (water-fearing) portion of the plasma membrane that can't mix with water?

a)

A

b)

B

25.

Which of the following substances would have the most trouble crossing the membrane by diffusing through the bilayer?

a)

water

b)

oxygen

c)

carbon dioxide

d)

a sodium ion

26.

A major function of glycoproteins and glycolipids in the membane is to

a)

glue cells together to form tissues

b)

allow cells to identify each other

c)

attach membrane to cytoskeleton

d)

help retain shape

27.

What kinds of molecules pass through a cell membrane most easily?

a)

ionic

b)

small and hydrophobic

c)

large polar

d)

large and hydrophobic

28.

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

a)

carbohydrate

b)

lipid

c)

protein

d)

nucleic acid

29.
During osmosis
a)
water moves from high to low concentration
b)
large or oddly shaped molecules move across a cell membrane
c)
water moves when energy is used
d)
proteins are built
30.
Ideally, your cells should be in a(n) _______ solution
a)
Hypertonic
b)
Hypotonic
c)
Isotonic
d)
Cola
31.
Osmosis
a)
diffusion of water molecules through a semi-permeable mebrane from an area of low concentration to an area of high concentration
b)
the diffusion of particles from an area of high concentration to an area of low concentration
c)
diffusion of water molecules through a semi-permeable membrane from an area of high concentration to an area of low concentration
d)
the diffusion of particles from an area of low concentration to an area of high concentration
32.

Active transport is the energy-requiring process of pumping molecules and ions across membranes "uphill" - against a concentration gradient. To move these molecules against their concentration gradient, a ___________ protein is needed.

a)

carrier

b)

transport

c)

ATP

d)

ADP

33.

This molecule powers the sodium-potassium pump.

a)

ATP

b)

ADP

c)

sodium

d)

potassium

34.

Energy from ATP changes the carrier protein's _______ to move molecules in and out of the cell.

a)

charge

b)

temperature

c)

shape

d)

position

35.

Which is true of the sodium-potassium pump?

a)

It moves potassium into the cell and sodium out of the cell.

b)

It moves sodium into the cell and potassium out of the cell.

c)

It moves both sodium and potassium into the cell.

d)

It moves both sodium and potassium out of the cell.

36.

How many sodium ions are moved by the sodium potassium pump?

How many potassium ions are moved by the sodium potassium pump?

a)

four sodium ions,

two potassium ions

b)

two sodium ions,

four potassium ions

c)

three sodium ions,

two potassium ions

d)

one sodium ion,

four potassium ions

37.
Endocytosis is defined as
a)
the movement of large molecules from the inside of the cell to the outisde of the cell using channel proteins. 
b)
the movement of large molecules from the inside of the cell to the outisde of the cell membrane vesciles. 
c)
 the movement of large molecules from the outside of the cell to the inside of the cell using membrane vesciles.
d)
the movement of large molecules from the outside of the cell to the inside of the cell using channel proteins. 
38.
Active transport _______ and is the movement of a substance from _____ to _____ concentration
a)
requires energy, high to low
b)
requires no energy, low to high
c)
 requires no energy, high to low
d)
 requires energy, low to high
39.
If something goes "along" its concentration gradient it goes from
a)
an area of low concentration to an area of high concentration
b)
an area of high concentration to an area of low concetration
40.
Passive transport
a)
 always occurs slowly
b)
 does not require energy
c)
requires energy
41.
In this image, the cell is using which type of molecular transport?
a)
Osmosis
b)
Diffusion 
c)
Endocytosis
d)
Exocytosis 
42.
Large particles being encased in a vesicle and brought into the cell.
a)
endocytosis
b)
exocytosis
c)
passive transport
d)
active transport
43.
A type of active transport that releases particles that were enclosed from a cell when the membrane of the vesicle fuses with that of the cell membrane
a)
Exocytosis
b)
Osmosis
c)
Mitosis
d)
Endoyctosis
44.
What is the term that means "a condition in which the concentration of a substance is equal throughout a space"?
a)
equilibrium
b)
exocytosis
c)
endocytosis
d)
phospholipid
45.

What is the force inside the central vacuole called?

a)

The Force

b)

Turgor Pressure

c)

Water Pressure

d)

Thigmotropism

46.

In plant cells, the force, exerted by the flow of water, within the cell that pushes the plasma membrane against the cell wall. This force gives plants structure and helps them stand up and not wilt.

a)

External Stimuli

b)

Internal Stimuli

c)

Energy Transformation

d)

Turgor Pressure

47.
The cell below is in a _____________ solution.
a)
Hypertonic
b)
Hypotonic
c)
Isotonic
48.
This egg has shrunk, what type of solution was it placed in?
a)
hypotonic solution
b)
hypertonic solution
c)
isotonic solution
d)
active transport
49.
You put a cell into a solution, the cell grows. Is the solution hypotonic or hypertonic to the cell? 
a)
hypertonic
b)
hypotonic
c)
isotonic
d)
not enough information
50.
What type of solution allows water to enter the plant cell?
a)
hypotonic solution
b)
hypertonic solution
c)
isotonic solution
d)
active transport
51.
An ISOTONIC solution has a(n) ______________ concentration of solute (dissolved stuff) than inside the cell.
a)
lower
b)
equal
c)
higher
52.
If a cell is placed in a HYPOTONIC solution, water will move _________ of the cell, causing it to ___________.
a)
into, swell
b)
out of, shrivel
c)
in and out of the cell, stay the same
53.
What type of solution is this cell in?
a)
Isotonic
b)
Hypertonic
c)
Hypotonic
d)
diffused
54.
What type of solution is this cell in?
a)
Isotonic
b)
Hypertonic
c)
Hypotonic
d)
diffused
55.
What type of solution is this cell in?
a)
Isotonic
b)
Hypertonic
c)
Hypotonic
d)
diffused
56.

Phosphate groups are

a)

hydrophobic

b)

hydrophilic

c)

neutral

d)

uncharged

57.

Which part of the phospholipid molecule is hydrophobic?

a)

phosphate head

b)

glycerol

c)

fatty acid tail

d)

the entire molecule is hydrophobic

58.

Which part of the phospholipid molecule is hydrophilic?

a)

phosphate head

b)

glycerol

c)

fatty acid tail

d)

the entire molecule is hydrophobic

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