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Unit 2 Review

Total questions: 114

Worksheet time: 1hrs 9mins

Name
Class
Date
1.

Identify cholesterol molecule

a)

structure a

b)

structure b

c)

structure h

d)

structure i

2.

Identify a peripheral protein

a)

structure a

b)

strucure b

c)

structure g

d)

structure h

3.

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

4.

Small, nonpolar, hydrophobic molecules such as fatty acids

a)

easily pass through the membrane's bilayer

b)

very slowly diffuse through the bilayer

c)

require transport proteins

d)

enter through endocytosis

5.

What do diffusion and osmosis have in common?

a)

They only happen in living cells.

b)

They require transport proteins in the membrane.

c)

They are passive transport mechanisms.

d)

Net movement of substances is against the concentration gradient.

6.

What is the difference between simple diffusion and facilitated diffusion?

a)

A

b)

B

c)

C

d)

D

7.

Which one of the following is not a function performed by a membrane protein?

a)

Cell adhesion

b)

Enzyme

c)

Hormone (Receptor) binding sites

d)

Vesicle Transport

8.

Which of the following is a feature of exocytosis but not endocytosis?

a)

Shape changes of a membrane

b)

Vesicle formation

c)

Use of ATP

d)

Secretion

9.

What is essential for diffusion?

a)

A concentration gradient

b)

A selectively permeable membrane

c)

A source of energy

d)

A protein

10.

Which pair of characteristics are correct for the cellular processes of exocytosis and endocytosis?

a)

A

b)

B

c)

C

d)

D

11.

Which statements are characteristics of diffusion through membranes?


I. Polysaccharides can be transported.

II. It can be facilitated by special channels.

III. It is affected by concentration gradients.

a)

I and II only

b)

I and III only

c)

II and III only

d)

I, II and III

12.

The graph shows the rate of transport of a molecule across the plasma membrane of a cell. It does not require ATP.


Which of the following is/are true for this graph?

a)

The molecule is transported by simple diffusion

b)

The graph is levelling out because channel proteins are becoming saturated

c)

The rate of transport is initially limited by the number of empty channel proteins

d)

The molecule is transported by active transport.

13.

Salt is added to pure water.


Which of the following is/are true?

a)

The solution will be more dilute

b)

The solution will be less hypotonic

c)

The solution will be more hypertonic

d)

The solution will have a lower solute concentration

14.

Potato cylinders were incubated in different concentrations of sucrose overnight. The graph shows their % change in mass at each sucrose concentration.


What was the concentration of sucrose inside the potato cells?

a)

0.30 M

b)

0.45 M

c)

0.70 M

d)

0.85 M

15.

Explain how the fluid mosaic model of the cell membrane supports its function in regulating the internal environment of the cell. Consider the arrangement and movement of molecules within the membrane.

a)

The model suggests a rigid structure where molecules are fixed, preventing any substance from entering or leaving the cell.

b)

The model depicts the membrane as a dynamic structure with proteins and lipids that move laterally, allowing selective permeability and fluidity.

c)

It proposes that the membrane is completely permeable to all molecules, which helps in the unrestricted exchange of substances.

d)

The model indicates that the membrane is impermeable, enhancing the cell's ability to maintain a stable internal environment by isolation.

16.

Design an experiment to test the selective permeability of a cell membrane to different sized molecules. Describe the setup and predict what your results would indicate about the membrane's properties.

a)

Use a dialysis tubing filled with starch and glucose solutions, submerged in water, and measure the diffusion of each molecule after a set period.

b)

Place a cell in a solution of large proteins and observe the cell's growth over time.

c)

Submerge a cell in pure water and measure the rate of water entering the cell.

d)

Expose a cell to varying temperatures and record the structural changes in the membrane.

17.

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

18.

What type of solution is this cell in?

a)

Isotonic

b)

Hypertonic

c)

Hypotonic

d)

Diffused

19.

Where will the water go?

a)

Into the cell

b)

Out of the cell

c)

Equally in & out - it's isotonic

d)

There is no water

20.
Movement of particles from high to low concentration. 
a)
Passive Transport
b)
Active Transport
21.

The cell membrane helps to maintain homeostasis by ...

a)

regulating what enters and leaves the cell.

b)

fighting foreign substances that enter the cell.

c)

providing a rigid support system for the cell.

d)

assisting the cell in movement

22.
What does "bilayer" mean?
a)

one layer

b)

two layers

c)

laminated

d)

bilateral

23.
Most of the cell membrane is made of...
a)

Lipids

b)

Carbohydrates

c)

Proteins

d)

Nucleic acids

24.
Hydrophobic region of the cell membrane?
a)

E

b)

B

c)

C

d)

A 

25.
Hydrophilic portion of cell membrane?
a)

A

b)

C

c)

D

d)

E 

26.

The structure in the membrane that would most likely serve as a carrier protein is ...

a)

Structure A

b)

Structure B

c)

Structure C

d)

Structure D

27.

The main difference between passive transport and active transport is ...

a)

passive transport requires energy

b)

active transport moves substances "down" their concentration gradient

c)

active transport requires energy

d)

passive transport moves substances "up" their concentration gradient

28.

When solutes diffuse, they move ....

a)

from low concentration to high concentration

b)

from high concentration to low concentration

c)

"up" the concentration gradient

d)

randomly

29.

Osmosis is strictly about ....

a)

the movement of solutes

b)

the movement of solutes across a membrane

c)

the movement of gases

d)

the movement of water across a membrane

30.

Particles diffuse naturally due to ...

a)

gravity

b)

the kinetic energy of the particles

c)

attractive forces between the atoms in the different particles

d)

the motion of the Earth

31.

In the lab we did with food coloring in hot and cold water, we observed that ....

a)

the rate of diffusion decreases when the particles are hot.

b)

the rate of diffusion decreases when the particles are cold.

c)

the rate of diffusion was not affected by temperature.

d)

particles cannot diffuse in very cold water.

32.

The U-shaped tube has 2 different mixtures of salt water in it and the 2 solutions are separated from each other by a semi-permeable membrane. The membrane is not permeable to salt but it is to water. What will the tube look like in a few hours if it is left to rest a it is?

a)

The salt particles (red dots) will move to the right side of the tube.

b)

The salt particles (red dots) will move to the left side of the tube.

c)

water will move to the left side of the tube.

d)

water will move to the right side of the tube.

33.

This tube has 2 solutions in it. They are separated by a semipermeable membrane at the bottom of the tube. How would you describe the 2 solutions in the tube?

a)

Side A is hypertonic to side B

b)

Side A is hypotonic to side B

c)

Side A is isotonic to side B

d)

Side B is hypertonic to side A.

34.

The 2 characteristics that determine if a molecule can diffuse through a plasma membrane are _________ and ________ .

a)

mass and state

b)

density and charge

c)

color and state (solid, liquid or gas)

d)

size and charge

35.

A molecule that could diffuse through the cell membrane would have to be ....

a)

light-weight and opaque

b)

non-polar and small

c)

heavy and small

d)

polar and small

36.

An example of a molecule that could MOVE BY DIFFUSION across a cell membrane is ....

a)

oxygen (O2)

b)

glucose

c)

water

d)

proteins

37.

Solutes in a solution will continue to diffuse until ....

a)

they get old and worn out

b)

they lose their charges

c)

they are equally dispersed.

d)

they become too small

38.

Once the particles in a solution hit equilibrium, they ....

a)

quit moving

b)

move back in the same direction they came from

c)

continue to move in the direction they were going

d)

continue to move but in no particular direction

39.

If the semi-permeable membrane in this image is not permeable to the solute (sugar) but is permeable to water, what will occur next?

a)

The overall net change in molecules will be water molecules into solution B.

b)

The overall net change in molecules will be water molecules into solution A.

c)

The overall net change in molecules will be sugar molecules into solution A.

d)

Their will be no (zero) overall net change in any of the molecules (water or sugar).

40.

Tonicity refers to the concentration of solutes. Observe the diagram. If a cell is in a hypotonic environment, this means that..

a)

there is less solute outside the cell than inside the cell.

b)

there is an equal amount of solutes inside as outside the cell.

c)

there is more solute outside of the cell than in the cell.

41.

Match option A to the type of environment that cell is in:

a)

Hypotonic

b)

Isotonic

c)

Hypertonic

42.

A cell will swell when it is placed in a(n)

a)

Hypotonic Solution

b)

Hypertonic Solution

c)

Isotonic Solution

d)

None of the above.

43.

The yellow and brown portion of this image is:

a)

protein

b)

phopholipid

c)

carbohydrate

d)

cholesterol

44.

How does a cell maintain homeostasis?

a)

It is selectively permeable

b)

Flexibility

c)

Protective barrier

d)

Structure and support

45.
The picture below is an example of _________________.
a)
osmosis
b)
isotonic
c)
diffusion
d)
active transport
46.
What type of transport is occurring in Part C of the diagram shown?
a)
Active Transport
b)
Osmosis
c)
Facilitated Diffusion
d)
Diffusion
47.
The movement of molecules from an area of high concentration to an area of low concentration.
a)
Osmosis
b)
Respiration
c)
Diffusion
d)
Active Transport
48.
Cells use energy to move materials across a membrane (low to high concentration).
a)
Active transport
b)
Passive transport
c)
Diffusion
d)
Osmosis
49.
 Look at the diagram of a cross-section of a cell membrane below. The cell membrane controls movement of materials into and out of the cell. The following particles are moving from high concentration to low concentration and are using a carrier protein. How would you describe this type of movement across the membrane? 
a)
simple osmosis
b)
active transport
c)
simple diffusion
d)
facilitated diffusion
50.
 In pure water, a red blood cell from an animal will swell and burst, but a leaf cell from a plant will not. Which structure in the leaf cell is responsible for this difference?
a)
cell membrane
b)
cell wall
c)
 mitochondrion
d)
nucleus
51.
The cell below is in a _________ solution.
a)
Hypotonic
b)
Hypertonic
c)
Isotonic
52.
Active transport requires ______, moves materials from __________________, and goes _______ the concentration gradient.
a)
No energy, low to high, against
b)
ATP, high to low, with
c)
ATP, low to high, with
d)
ATP, low to high, against
53.
Which diagram best shows the end result of diffusion?
a)
F
b)
G
c)
H
d)
J
54.
What is the difference between active and passive transport?
a)
Active does not need energy and passive uses ATP (energy)
b)
Active uses ATP (energy) and passive does not need energy
c)
Active stores transport proteins and passive releases 
d)
Active uses hormones and passive does not 
55.
Has membrane bound organelles
a)
Prokaryote
b)
Eukaryote
c)
both
56.
One example of a prokaryote is a...
a)
fungus
b)
bacteria
c)
animal
d)
plant
57.
Which type of cell?
a)
Prokaryote
b)
Eukaryote
58.
Which type of cell?
a)
Prokaryote
b)
Eukaryote
59.
Which type of cell?
a)
Prokaryote
b)
Eukaryote
60.
Where is the DNA found in a prokaryotic cell? 
a)
floating around in the cytoplasm 
b)
in the nucleus 
c)
in the ribosomes
d)
attached to the cell membrane
61.
Where is the DNA found in a eukaryotic cell? 
a)
floating around in the cytoplasm 
b)
in the nucleus 
62.
Bacteria are a type of...
a)
Prokaryote
b)
Eukaryote
c)
both
63.

True or False: Both prokaryotes and eukaryotes have ribosomes and a plasma membrane.

a)

True

b)

False

64.

What type of cell is shown?

a)

Plant cell

b)

Prokaryotic cell

c)

Bacteria cell

d)

Eukaryotic cell

65.

What type of cell is shown?

a)

Eukaryotic cell

b)

Bacteria cell

c)

Prokaryotic cell

d)

Animal cell

66.

I have DNA but no membrane-bound organelles, what am I?

a)

Eukaryote

b)

Prokaryote

c)

Animal cell

d)

Plant cell

67.

I have membrane-bound organelles and DNA, what am I?

a)

Prokaryote

b)

Chloroplast

c)

Bacteria

d)

Eukaryote

68.

Which of the following has organelles?

a)

prokaryotes

b)

eukaryotes

c)

prokaryotes and eukaryotes

69.

Which of the following has DNA?

a)

prokaryotes

b)

eukaryotes

c)

prokaryotes and eukaryotes

70.

Animals are an example of __________.

a)

prokaryotes

b)

eukaryotes

71.
What type of biological molecule is shown? HINT: Made of amino acids.
a)
carbohydrate
b)
lipid
c)
protein
d)
nucleic acid
72.
What type of biological molecule is shown?
a)
carbohydrate
b)
lipid
c)
protein
d)
nucleic acid
73.
What type of biological molecule is shown?
a)
carbohydrate
b)
lipid
c)
protein
d)
nucleic acid
74.
What type of biological molecule is shown?
a)
carbohydrate
b)
lipid
c)
protein
d)
nucleic acid
75.
Which biological molecule contain carbon, hydrogen, and oxygen in a 1:2:1 ratio?
a)
proteins
b)
carbohydrates
c)
lipids
d)
nucleic acids
76.
What type of biological molecule is shown?
a)
carbohydrate
b)
lipid
c)
protein
d)
nucleic acid
77.
Which of these is NOT an element found in carbohydrates, proteins, nucleic acids, and lipids?
a)
nitrogen
b)
carbon
c)
hydrogen
d)
oxygen
78.
Which biological molecule contain mostly carbon, hydrogen, with some oxygen
a)
proteins
b)
carbohydrates
c)
lipids
d)
nucleic acids
79.
Which biological molecule contain carbon, hydrogen, oxygen, nitrogen, and sulfur?
a)
proteins
b)
carbohydrates
c)
lipids
d)
nucleic acids
80.
Which biological molecule contain carbon, hydrogen, oxygen, nitrogen, and phosphorous?
a)
proteins
b)
carbohydrates
c)
lipids
d)
nucleic acids
81.
Which of these molecules have a long-chain carbon backbone?
a)
proteins
b)
carbohydrates
c)
lipids
d)
nucleic acids
82.

Molecules that contain mostly carbon and hydrogen are called (a)   .

83.
Which molecule contains a sugar, phosphate, and nitrogenous base?
a)
nucleic acid
b)
protein
c)
carbohydrate
d)
lipid
84.
Which of these combination of elements would be found in a carbohydrate?
a)
CH2O
b)
CHO
c)
CHON
d)
CHONP
85.
Which of these combination of elements would be found in a lipid?
a)
CH2O
b)
CHO
c)
CHON
d)
CHONP
86.
Which of these combination of elements would be found in a protein?
a)
CH2O
b)
CHO
c)
CHON
d)
CHONP
87.
Which of these combination of elements would be found in a nucleic acid?
a)
CH2O
b)
CHO
c)
CHON
d)
CHONP
88.
Which of these is NOT a structural group found in an amino acid?
a)
phosphate group
b)
variable R side chain
c)
carboxylic acid group
d)
amine group
89.
Which molecule is a good source of energy because it has many carbon to carbon bonds?
a)
nucleic acid
b)
protein
c)
carbohydrate
d)
lipid
90.
What type of molecule is sucrose?
a)
disaccharide
b)
monosaccharide
c)
.
d)
.
91.
What type of molecule is glucose?
a)
monosaccharide
b)
disaccharide
c)
.
d)
.
92.
What type of biological molecule is shown?
a)
carbohydrate
b)
lipid
c)
protein
d)
nucleic acid
93.
What type of biological molecule is shown?
a)
carbohydrate
b)
lipid
c)
protein
d)
nucleic acid
94.
What type of biological molecule is shown?
a)
carbohydrate
b)
lipid
c)
protein
d)
nucleic acid
95.

All living things are made of...

a)

atoms

b)

cells

c)

bacteria

d)

plants

96.

Where is the DNA found in a prokaryotic cell?

a)

floating around in the cytoplasm

b)

in the nucleus

97.
What type of cell has a nucleus? 
a)
eukaryotic
b)
prokaryotic 
98.

Under a microscope, what kind of cells lack (do not have) membrane-bound organelles?

a)

Prokaryotes

b)

Eukaryotes

c)

Plants

d)

Animals

99.

Controls what enters/leaves a cell

a)

cell membrane

b)

Nuclear membrane

c)

cell wall

d)

cytoplasm

100.

control, read, and direct the cell using DNA instructions

a)

nucleus

b)

mitochondria

c)

endoplasmic reticulum

d)

lysosome

101.

stiff, protective outer layer of plant cells

a)

cell membrane

b)

nuclear membrane

c)

cell wall

d)

cytoplasm

102.

releases the energy for cells to use by creating ATP

a)

mitochondria

b)

ribosomes

c)

lysosomes

d)

nucleolus

103.

Amino acids link together to form proteins. In which organelle would this process occur?

a)

Lysosome

b)

Ribosome

c)

Centriole

d)

Mitochondria

104.

packages proteins for delivery

a)

Endoplasmic reticulum

b)

ribosomes

c)

golgi apparatus

d)

lysosomes

105.
collect sunlight which it converts to sugars
a)
chloroplasts
b)
cytoplasm
c)
cell wall
d)
mitochondria
106.

hold/store water, mainly found in plant cells

a)

nuclolus

b)

ribosomes

c)

golgi bodies

d)

vacuoles

107.

break down (digest) worn out cell parts, mostly in animal cells

a)

cytoplasm

b)

lysosomes

c)

mitochondria

d)

vacuoles

108.

Jello-like material, fills the space between cell organelles and holds them securely in place.

a)

cytoplasm

b)

chromatin

c)

chloroplast

d)

cell membrane

109.
What am I?
a)
mitochondria
b)
lysosomes
c)
chloroplast
d)
endoplasmic reticulum
110.
What am I?
a)
cell wall
b)
mitochondria
c)
cytoplasm
d)
chloroplast
111.
What am I?
a)
vacuole
b)
ribosome
c)
endoplasmic reticulum
d)
golgi apparatus
112.
What am I?
a)
Nucleus
b)
Golgi Body
c)
Mitochondrion
d)
Plasma Membrane
113.
What makes the endoplasmic reticulum rough?
a)
Vessicles
b)
Vacuoles
c)
Ribosomes
d)
Chromosomes
114.
The ______________ is the brain of the cell.
a)
Vacuole
b)
Nucleus
c)
Chromosomes
d)
60 W light bulb

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