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Unit 2 Test

Total questions: 122

Worksheet time: 3hrs 51mins

Name
Class
Date
1.

What is the function of the cell membrane?

a)

To control what comes in and out of the cell

b)

To break down food inside the cell

c)

to serve as a barrier

d)

to eat the cells food

2.

Which organelle produces the energy a cell needs to carry out its function

a)

Mitochondria

b)

Golgi Bodies

c)

Cytoplasm

d)

Nucleus

3.

What is the function of the Vacuoles

a)

Store food, water and waste

b)

Receive proteins

c)

Assembles amino acids

d)

Found inside the nucleus

4.

Which organelle receives proteins and materials from the ER, packages them and distributes them

a)

Vacuoles

b)

Golgi Bodies

c)

Nucleus

d)

Chromatin

5.

Which cell contains Chloroplasts?

a)

Animal

b)

Plant

6.

The control center of cell is

a)

the nucleus

b)

ribosomes

c)

chromatin

7.

Which organelle contains genetic material?

a)

Endoplasmic Reticulum

b)

Golgi Complex

c)

Nucleolus

d)

Nucleus

8.
What organelle is called the "powerhouse" of a cell?

a)
Endoplasmic Reticulum
b)
Nucleus
c)
Mitochondria
d)
Nucleolus
9.
What is the function of nucleus?
a)
Structure that organizes motion of chromosomes. 
b)
Structure that contains DNA and directs the cell 
c)
Membrane that surrounds and protects the cell 
d)
Stack of membranes that packages chemicals
10.
I make proteins for the cell. What am I?
a)
ribosome
b)
mitochondria
c)
chloroplast
d)
lysosome
11.
What can only be found in plant cells?
a)
Cell membrane
b)
Vacuole
c)
Chloroplast
d)
Mitochondrion
12.
The two kinds of cells are Prokaryotes and Eukaryotes. How are they different?
a)
Prokaryotes have a nucleus.
b)
Eukaryotes have a nucleus.
c)
Prokaryotes are plant cells.
d)
There is no difference.
13.
What cell part is NOT found in all cells?
a)
Cell Wall
b)
Cell Membrane
c)
Cytoplasm
d)
Genetic Material
14.
This organelle takes food and turns it into ENERGY for plant and animal cells.
a)
Chloroplast
b)
Mitochondria
c)
Lysosome
d)
Ribosome
15.
The site of photosynthesis
a)
ribosome
b)
mitochondria
c)
chloroplast
d)
nucleus
16.
Where are proteins made?
a)
Golgi body
b)
Mitoichondria
c)
Chromosomes
d)
Ribosomes
17.
Only eukaryotic cells have....
a)
membrane-bound organelles 
b)
DNA
c)
ribosomes
d)
cell membranes 
18.
What is the fluid inside a cell called? 
a)
Endoplasimic Reticulum
b)
Orange Juice
c)
Water
d)
Cytoplasm
19.
Which of these is NOT a part of the Cell Theory?
a)
All cells are independent.
b)
Cells are the basic unit of living things. 
c)
All living things are one or more cells.
d)
Cells come from cells.
20.
This organelle eliminates waste. 
a)
Nucleus
b)
ER
c)
Vacuole
d)
Lysosome
21.
This is a double layer of phospholipids that creates a barrier between the cells internal and external environments; it controls what comes in or out of the cell (selective permeable)
a)
Nucleus
b)
Cilia
c)
Cell membrane
d)
Flagella
22.
What is the diffusion of water?
a)
osmosis
b)
active transport
c)
diffusion
d)
facilitated diffusion
23.
Which type of movement requires energy?
a)
osmosis
b)
active transport
c)
diffusion
d)
facilitated diffusion
24.
What are the three types of passive transport?
a)
osmosis, diffusion, active transport
b)
active transport, facilitated diffusion, osmosis
c)
diffusion, osmosis, facilitated diffusion
d)
facilitated diffusion, active transport, diffusion
25.
Which type of movement has channels that help large molecules move through the cell membrane?
a)
active transport
b)
diffusion
c)
osmosis
d)
facilitated diffusion
26.
What are the three types of transport that go from high to low concentration?
a)
active transport, osmosis, facilitated diffusion
b)
diffusion, osmosis, facilitated diffusion
c)
osmosis, active transport, isotonic
d)
facilitated diffusion, hypertonic, active transport
27.
Which type of movement has proteins that act like pumps to move molecules through the cell membrane?
a)
active transport
b)
diffusion
c)
osmosis, 
d)
facilitated diffusion
28.
Which type of movement goes from low to high concentration?
a)
active transport
b)
diffusion
c)
osmosis, 
d)
facilitated diffusion
29.

What type of solution is a cell in when it gets bigger than normal while in tap water?

a)

hypertonic

b)

isotonic

c)

hypotonic

30.

What type of solution is a cell in when it shrinks while in salt water?

a)

hypertonic

b)

isotonic

c)

hypotonic

31.
What type of solution is a cell in when it stays the same size?
a)
hypertonic
b)
isotonic
c)
hypotonic
32.

This regulates the movement of molecules from one side of the membrane to the other.

a)

cell membrane

b)

equilibrium

c)

passive transport

d)

diffusion

33.
What three substances make up the cell membrane?
a)
lipids, starches, nucleic acids
b)
lipids, fats, sugars
c)
lipids, sugars, proteins
d)
lipids, proteins, carbohydrates
34.
What is the movement of molecules from an area of high to low concentration and does not require energy?
a)
osmosis
b)
diffusion
c)
facilitated diffusion
d)
active transport
35.
What is the diffusion of water?
a)
osmosis
b)
diffusion
c)
facilitated diffusion
d)
active transport
36.
What uses proteins (the proteins make a channel) to move molecules across the a membrane. It does not require energy
a)
osmosis
b)
diffusion
c)
facilitated diffusion
d)
active transport
37.
What uses proteins as pumps to move molecules across the membrane?
a)
osmosis
b)
diffusion
c)
facilitated diffusion
d)
active transport
38.
This has the same strength and same concentration outside as inside.
a)
hypotonic
b)
isotonic
c)
hypertonic
39.
How does a cell maintain homeostasis?
a)
Regulates what enters and leaves the cell
b)
Flexibility
c)
Protective barrier
d)
Structure and support
40.
What is another term for "selectively permeable"?
a)
Porous
b)
Acts like a switch
c)
Permanent
d)
Semipermeable
41.
Identify the part of the membrane identified as A.
a)
carbohydrate
b)
cholesterol
c)
protein
d)
phospholipid
42.
The function of the plasma membrane is....
a)
to regulate what enters and leaves the cell.
b)
fight bacteria and viruses that enter the cell.
c)
provide rigid support and protection to the cell.
d)
make sure each cell can move
43.

What molecule is pictured?

a)

Integral Protein

b)

Carbohydrate chain

c)

Phospholipid

44.
What type of transport is this?
a)
facilitated diffusion
b)
active transport
c)
diffusion
d)
osmosis
45.
The picture is an example of...
a)
Active transport
b)
Passive transport
c)
Simple diffusion
d)
Osmosis
46.

What molecule is pictured?

a)

Integral Protein

b)

Carbohydrate chain

c)

Phospholipid

47.
Which is true about active transport?
a)
It requires energy
b)
it does not require energy
c)
It moves substances down the concentration gradient
d)
it moves material from high to low concentration
48.

The cell membrane is composed of a ...........

a)

phospholipid bilayer

b)

single layer of phospholipids

c)

carbohydrate bilayer

d)

single layer of carbohydrates

49.

The heads of the phospholipids in the cell membrane are considered to be?

a)

hydrophobic: water loving

b)

hydrophilic: water loving

c)

hydrophobic: water hating

d)

hydorphilic: water wating

50.

The tails of the phospholipids in the cell membrane are considered to be?

a)

hydrophobic: water loving

b)

hydrophobic: water hating

c)

hydrophilic: water loving

d)

hydrophillic: water hating

51.

Select ALL that describe the cell membrane.

a)

Selectively Permeable

b)

Fluid Mosaic

c)

Nucleus

d)

Phospholipid Bilayer

52.

Cell membrane structures that are embedded in the phospholipid bilayer that identify and communicate with extracellular surroundings.

a)

Cholesterol

b)

Carbohydrate Chains

c)

Proteins

53.

Identify what part of the cell membrane that is represented by letter A.

a)

Phospholipid Bilayer

b)

Integral Protein

c)

Cholesterol

d)

Carbohydrate Chain

54.

Analyze the cell membrane diagram. Identify the letter that is considered hydrophobic.

a)

F

b)

G

c)

H

d)

B

55.

The 'membrane' pictured below would not be able to form because

a)

the 'heads' would repel each other

b)

the 'tails' would repel water on either side

c)

the cell membrane isn't a bilayer

d)

the membrane does not contain phospholipids

56.

The cell membrane is selectively permeable, which means...

a)

All materials can enter and leave the cell

b)

Certain things can enter while others cannot

c)

The cell manually sorts through all materials

d)

Only certain cells can interact with the cell.

57.

The majority of the cell membrane is made of which macromolecule?

a)

Phospholipids

b)

Carbs

c)

Proteins

d)

Nucleic acids

58.
Which component of the cell membrane functions to help move larger materials across the membrane?
a)
carbohydrates
b)
cholesterol
c)
phospholipids
d)
proteins
59.
What is NOT TRUE about the cell membrane
a)
It controls what enters and leaves the cell
b)
Semipermeable
c)
Phospholipid bilayer
d)
Contains digestive enzymes
60.

The term "mosaic" applies to the cell membrane because...

a)

cell membranes are able to bend, stretch and change shape

b)

Cell membranes are able to flow

c)

Cell membranes are made from a variety of different molecules

61.

The term "fluid" applies to the cell membrane because...

a)

Cell membranes only allow SOME molecules to pass across the membrane

b)

Cell membranes are able to flow

c)

Cell membranes are made from a variety of different molecules

62.

True or false: Regulating what enters and leaves the cell helps the cell maintain homeostasis.

a)

True

b)

False

63.
This is a balance that organisms maintain through self-regulating adjustments
a)
bilayer
b)
homeostasis
c)
secretions
64.

All cells have a cell membrane

a)

True

b)

false

65.

Phospholipids are made up of two parts. Which of the following correctly describes these two parts?

a)

hydrophobic head, hydrophilic tail

b)

hydrophobic head, hydrophobic tail

c)

hydrophilic head, hydrophobic tail

d)

hydrophilic head, hydrophilic tail

66.

Which image correctly shows the way phospholipids arrange themselves in the cell (plasma) membrane?

a)
b)
c)
d)
67.

Hydrophobic means...

a)

water-loving

b)

water-fearing

c)

nonpolar

d)

lipid soluble

68.
What does hydrophilic mean?
a)
Fills water up
b)
Hates water
c)
Loves water
d)
Only associates with water if it has to
69.
Hydrophilic portion of cell membrane?
a)
A
b)
C
c)
D
d)
E 
70.
Hydrophobic region of the cell membrane?
a)
E
b)
B
c)
C
d)
A 
71.
___________ allow cells to recognize each other and act like ID tags. 
a)
Carbohydrates 
b)
Proteins
c)
Phospholipids 
d)
Cholesterol
72.
What is the movement of molecules from an area of high to low concentration and does not require energy?
a)
osmosis
b)
diffusion
c)
facilitated diffusion
d)
active transport
73.

Describe the movement of molecules in the illustration.

a)

Molecules are moving from a lower concentration to a higher concentration.

b)

Molecules are moving from a higher concentration to a lower concentration.

c)

Molecules are moving from a higher concentration to a lower concentration and then from a lower to higher concentration.

d)

Molecules are moving from a lower concentration to a higher concentration and then from a higher concentration to a lower concentration.

74.
Which form of transport is being shown in the diagram.
a)
diffusion
b)
osmosis
c)
facilitated diffusion
d)
active transport
75.

When a cell forms a vesicle around unwanted particles and expels it OUT of the cell.

a)

Pinocytosis

b)

Endocytosis

c)

Receptor-mediated

d)

Exocytosis

76.
Particles are removed from a cell (pushed out).
a)
Endocytosis
b)
Exocytosis
c)
Permeable
d)
In high concentration
77.

Which type of active transport uses a vesicle to allow a large molecule to exit the cell?

a)

Endocytosis

b)

Exocytosis

78.
A type of active transport that brings particles into a cell when the cell membrane encloses a particle to make a vesicle
a)
Diffusion
b)
Passive Transport
c)
Active Transport
d)
Endocytosis
79.
In this image, the cell is using which type of molecular transport?
a)
Osmosis
b)
Diffusion 
c)
Endocytosis
d)
Exocytosis 
80.
Facilitated diffusion is the movement of materials into and out of the cell
a)
with the use of energy
b)
with the use of proteins but no energy
c)
by moving water
d)
by using ATP
81.
In this situation, where the solute is illustrated by red dots, predict if will WATER move into or out of the cell, and how that will affect the cell.
a)
Water will move into the cell and the cell will expand.
b)
Water will move into the cell and the cell will shrink.
c)
Water will move out of the cell and the cell will expand.
d)
Water will move out of the cell and the cell will shrink.
82.

Which type of active transport is displayed?

a)

Endocytosis

b)

Exocytosis

83.

In which osmotic state does the cell shrink?

a)

hypertonic

b)

isotonic

c)

hypotonic

84.

In which osmotic state does the cell look normal?

a)

hypertonic

b)

isotonic

c)

hypotonic

85.

During which osmotic state does the cell swell and get bigger?

a)

Hypertonic

b)

Isotonic

c)

Hypotonic

86.

In a hypotonic solution, where is most of the water?

a)

inside the cell

b)

outside of the cell

87.

In a hypotonic solution, where are most of the solutes?

a)

inside the cell

b)

outside of the cell

88.

In a hypotonic solution, which direction does water want to move to create equilibrium?

a)

into the cell

b)

outside of the cell

89.

In a hypertonic solution, where is most of the water?

a)

inside the cell

b)

outside of the cell

90.

In a hypertonic solution, where are most of the solutes?

a)

inside the cell

b)

outside of the cell

91.

In a hypertonic solution, which direction does water want to move to create equilibrium?

a)

into the cell

b)

outside of the cell

92.

In which solution the cell happy and in a state of equilibrium?

a)

hypertonic

b)

hypotonic

c)

isotonic

93.

What is the stimulus in the blood clotting model?

a)

Clotting occurs from platelets

b)

Break or tear in blood vessel wall

c)

Clotting proceeds until break is sealed by clot

d)

Released chemicals attract more platelets.

94.
The "cause" for something to happen is the
a)
response
b)
effect
c)
stimulus
d)
homeostasis
95.

What type of feedback is shown in the blood clotting model?

a)

Positive

b)

Negative

96.

According to the model, what is the response to HIGH blood glucose (sugar)?

a)

Pancreas releases insulin into blood

b)

Pancreas releases glucagon into blood

97.

According to the model, what would happen if the pancreas did NOT detect rising blood glucose (sugar) level?

a)

Blood sugar would return to normal

b)

Most body cells would take up more glucose

c)

Blood sugar would stay above normal

d)

The liver would get the message to store glucose as glycogen

98.

The ability to maintain body temperature within a certain range is ...

a)

thermodynamics

b)

thermoregulation

c)

thermostat

d)

thermometer

99.
Homeostasis
a)
allows for a wildly fluctuating internal environment
b)
is impossible in vertebrates
c)

is the maintenance of a relatively stable internal environment

d)

is the maintenance of a relatively stable external environment

100.

How does the body respond when more oxygen is required?

a)

Decreasing heart rate

b)

Increasing heart rate

c)

Decreasing blood pressure

d)

Increasing blood pressure

101.

One of the most common examples of homeostasis is body temperature. When your body temperature rises above normal, how does your body respond?

a)

shivers

b)

sweats

c)

coughs

102.
If the environment gets cold, we will often shiver in order to:
a)
keep body temperature the same as the external temperature
b)
decrease body temperature
c)
increase body temperature
d)
regulate blood pressure
103.
What type of feedback loop is shown?
a)
negative
b)
neutral 
c)
positive
104.
Failure to maintain homeostasis could result in:
a)
lack of internal balance
b)
eventual death
c)
difficulty carrying on metabolism 
d)
all three
105.
The two types of feedback systems that help organisms maintain homeostasis are:
a)
positive and negative 
b)
receptor and effector
c)
static and dynamic
d)
minor and major
106.
Maintaining body temperature is an example of a:
a)
negative feedback loop
b)
positive feedback loop
107.
When glucose levels in the blood rise, your brain sends a signal to your pancreas. The pancreas releases insulin, which opens channels in cell membranes to allow glucose to enter the cell, lowering blood sugar levels. 
a)
Positive Feedback Response
b)
Negative Feedback Loop 
108.

What is the point of a feedback loop?

a)

To provide the body with more energy

b)

To provide the body with more food

c)

To make sure the conditions in the body are always changing

d)

To make sure the conditions in the body remain stable

109.
When you get cut, your skin cells release hormones that signal platelets to come and stop the bleeding. Platelets then release more hormones that signal even more platelets to help stop bleeding. The hormone signals continue until the cut is closed.
a)
Positive Feedback Response
b)
Negative Feedback Loop 
110.

Loops that cause a response to build up and build up until something big happens are called ____________ loops

a)

positive

b)

negative

111.

The heater kicks on and the house warms up, so it kicks off. Then the house cools a bit and the heater kicks back on. This continues all day. It's a _____________ loop.

a)

positive

b)

negative

112.

Labor during pregnancy is an example of a ____________ feedback loop

a)

positive

b)

negative

113.

Blood clotting is an example of a ____________ feedback loop

a)

positive

b)

negative

114.

Blood sugar regulation is an example of a ______________ loop

a)

positive

b)

negative

115.

The group of organisms that use the process of homeostasis includes

a)

mammals, only

b)

animals, only

c)

plants and animals

d)

all living things

116.

Which of the following is most likely to cause a person's blood cells to burst?

a)

eating many salty foods

b)

eating many greasy foods

c)

drinking small amounts of water

d)

drinking very large amounts of water

117.

Which of the following is not regulated by homeostasis?

a)

body temperature

b)

blood sugar

c)

blood pH

d)

body movements

118.

This graph shows an example of...

a)

Blood sugar regulation

b)

Homeostasis

c)

Negative feedback

d)

Positive feedback

119.

What detects that the system is outside of homeostasis and adjustments need to be made?

a)

effector

b)

response

c)

control center

d)

stimulus

120.

The body part that senses the change inside the organism ...

a)

receptor

b)

control center

c)

effector

d)

response

121.

Identify the stimulus event.


Scenario: A person begins to exercise which causes their body temperature to increase. The temperature change is noticed and the person begins to sweat and their body temperature decreases.

a)

body temperature increases

b)

person begins to sweat

c)

temperature change is noticed

d)

person begins to exercise

122.

Identify the response.


Scenario: A person begins to exercise which causes their body temperature to increase. The temperature change is noticed (sensed) and the person begins to sweat and their body temperature decreases.

a)

the person begins to sweat

b)

the person begins to exercise

c)

change in temperature

d)

body temperature increases

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