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Exam 2

Total questions: 158

Worksheet time: 2hrs 46mins

Name
Class
Date
1.

What is the process by which molecules move from an area of higher concentration to an area of lower concentration across a cell membrane?

a)

Diffusion

b)

Osmosis

c)

Active Transport

d)

Facilitated Diffusion

2.

Which type of solution causes a cell to shrink due to water leaving the cell?

a)

Hypertonic

b)

Isotonic

c)

Hypotonic

d)

Neutral

3.

What is the term for the movement of water across a selectively permeable membrane?

a)

Osmosis

b)

Diffusion

c)

Active Transport

d)

Pinocytosis

4.

Which transport protein moves two substances in the same direction across the membrane?

a)

Symporter

b)

Uniporter

c)

Antiporter

d)

Channel Protein

5.

What is the role of cholesterol in the cell membrane?

a)

Maintains fluidity

b)

Acts as a transport protein

c)

Provides energy

d)

Facilitates diffusion

6.

What is the process by which cells engulf large particles or other cells?

a)

Phagocytosis

b)

Pinocytosis

c)

Exocytosis

d)

Endocytosis

7.

What type of reaction has a positive Delta G and requires energy input?

a)

Endergonic

b)

Exergonic

c)

Catabolic

d)

Anabolic

8.

What is the site on an enzyme where the substrate binds?

a)

Active Site

b)

Allosteric Site

c)

Binding Site

d)

Inhibition Site

9.

Which process occurs in the cytoplasm and breaks down glucose into pyruvate?

a)

Glycolysis

b)

Krebs Cycle

c)

Electron Transport Chain

d)

Calvin Cycle

10.

What are the products of the Krebs cycle?

a)

ATP, NADH, FADH2, CO2

b)

Pyruvate, ATP

c)

Glucose, Oxygen

d)

Water, ATP

11.

What is the process of an endergonic reaction being fueled by an exergonic reaction called?

a)

second law of thermodynamics

b)

energy coupling

c)

first law of thermodynamics

d)

endergonic/exergonic switch

12.
What type of reaction is occurring in this graph?
a)
endergonic
b)
exergonic
c)
unable to determine
13.

Which statement is true according to the image?

a)

A: endergonic; B: exergonic

b)

A: exothermic; B: endothermic

c)

A: exergonic; B: endergonic

d)

A: endothermic; B: exothermic

14.
Why is ATP an important molecule in metabolism?
a)
Its hydrolysis provides an input of free energy for exergonic reactions.
b)
It provides energy coupling between exergonic and endergonic reactions.
c)
Its terminal phosphate group contains a strong covalent bond that when hydrolyzed releases free energy.
d)
Its terminal phosphate bond has higher energy than the other two.
15.

The reaction shown is:

a)

endergonic because energy is released

b)

exergonic because energy is released

c)

endergonic because energy is captured

d)

exergonic because energy is captured

16.

Net intake of energy

a)

endergonic

b)

exergonic

17.

Net release of energy

a)

endergonic

b)

exergonic

18.

A + B --> C

a)

Anabolic

b)

Catabolic

19.

A --> B + C

a)

Anabolic

b)

Catabolic

20.
Which bond of the ATP molecule is broken in order to release energy?
a)
A
b)
B
c)
C
d)
D
21.
Which structures shown in the Figure make up the ADP molecule?
a)
A and B
b)
A, B and C
c)
A, B, C, and D
d)
C and D
22.
A catalyst does what?
a)
Lowers the atp
b)
lowers the active site
c)
lowers the activation energy
d)
slows down a reaction 
23.
The portion of an enzyme molecule that a specific substrate fits in is the what?
a)
Substrate
b)
Product
c)
Active Site
d)
Catalyst
24.
what is the most important molecule that provides energy to the cells?
a)
Light
b)
Stroma
c)
Thylakoid
d)
ATP
25.
A ________ reaction is a chemical reaction in which more energy is stored than released.
a)
Endergonic
b)
Exergonic
c)
exocytosis
d)
endothermic
26.
Which of the following is the reaction for cellular Respiration?
a)
C6H12 O6 + 2O6----→ 6CO2 + 12 H2O + ATP
b)
C6H12 O8 + O----→6CO2 + 12 H2O 
27.
Which of the following is the reaction for photosynthesis?
a)
6CO2 + 12 H2O -------light→ C6H12 O8
b)
6CO2 + 12 H2O -------light→ C6H12 O8 + O6
c)
6CO2 + 6 H2O -------light→ C6H12 O6 + 6 O2
d)
CO2 + 12 H2O -------light→ C6H12 O8 + 2 O6
28.
Is this reaction endergonic or exergonic?
a)
Exergonic
b)
Endergonic
29.
Look at the picture: what is this picture showing?
a)
An exergonic reaction
b)
How not to use enzymes
c)
The process of which an enzyme goes through
30.
Is this reaction endergonic or exergonic?
a)
Exergonic
b)
Endergonic
31.
Endergonic is when energy is invested into a reaction. The energy is synthesized.
a)
True
b)
False
c)
False, exergonic
d)
False, catalyst
32.
Exergonic is when energy is released, digestion.
a)
True
b)
False
c)
False, Catalyst 
d)
False, endergonic
33.

In _____________, carbon dioxide is fixed into organic compound catalysed by PEP carboxylase at night. Glucose production occurs in the day when stomata are closed.

a)

C4

b)

C3

c)

CAM

d)

All of the above

34.

Which of the following is the acceptor molecule of carbon dioxide from the air in C4 plants?

a)

Rubisco

b)

PEP carboxylase

c)

RuBP

d)

CO2 is not fixed in C4 plants

35.

Where is the malic acid used in photosynthesis found in C4 plants?

a)

Mesophyll Cell

b)

Bundle Sheath

c)

Stomata

d)

Mitochondria

36.

The alternative pathways of photosynthesis using the C4 or CAM systems are said to be compromises. Why?

a)

C4 compromises on water loss and CAM compromises on photorespiration.

b)

Both minimize photorespiration but expend more ATP during carbon fixation.

c)

CAM plants allow more water loss, whereas C4 plants allow less CO2 into the plant.

d)

C4 plants allow less water loss but CAM plants allow more water loss.

37.

Which of the following does NOT occur during the Calvin Cycle

a)

carbon fixation

b)

oxidation of NADPH

c)

release of oxygen

d)

regeneration of the carbon dioxide acceptor

38.
cluster of proteins that span the cell membrane and allow hydrogen ions (H+/Protons) to pass through it
a)
ATP synthase
b)
photosystem
c)
electron transport chain
d)
Calvin cycle
39.
In CAM Photosynthesis CO2 is stored as:
a)
Malate
b)
RuBP
c)
Pyruvate
d)
G3P
40.

Which type of plant does not have a carbon dioxide storage method

a)

C3

b)

C4

c)

CAM

41.

Which type of plant fixes carbon only at night?

a)

C3

b)

C4

c)

CAM

d)

all of these

42.

CAM plants keep stomata closed in daytime, thus reducing loss of water. They can do this because they

a)

fix CO2 into organic acids during the night when temperatures are cooler.

b)

fix CO2 into by combining it with RuBP in the Calvin cycle.

c)

obtain CO2 through their roots during the day.

d)

fix CO2 into organic acids in the mesophyll cells, which do not rely on stomata.

43.

What are C3 plants?

a)

These plants are the best when it comes to storing water due to their extremely dry environments

b)

These plants mostly just reduce the rate of photorespiration

c)

plants that do the calvin cycle in the mesophyll cells

44.

In C4 plants, the Calvin cycle....

a)

Takes place at night

b)

Only occurs when the stomata are closed

c)

Takes place in the mesophyll

d)

Takes place in the bundle-sheath cells

45.

Why do CAM plants open their stomata at night

a)

It just happens

b)

To take in oxygen

c)

To collect Carbon Dioxide

d)

None of the above

46.

CAM plants have a different adaptation to what climate

a)

cold and wet

b)

hot and dry

c)

both

d)

none of the above

47.

What part of the chloroplast does the Calvin cycle take place?

a)

outer membrane

b)

thylakoid

c)

stroma

d)

inner membrane

48.

What type of biomolecule is ATP Synthase?

a)

Nucleic Acid

b)

Carbohydrate

c)

Lipid

d)

Protein

49.

What is added to NADP+NADP^+  to create NADPH

a)

Electrons

b)

Hydrogen

c)

Water

d)

Phosphorous

50.

Which Photosystem is first in the light-dependent reactions?

a)

Photosystem I

b)

Photosystem II

c)

Chlorophyll

d)

Chloroplasts

51.

What is the 1st step in the light dependent reactions, and where do they occur?

4 lines
52.
What is the main purpose of the light dependent reactions?
a)
To provide the energy for the calvin cycle
b)
To capture energy and make sugar
c)
To reflect green light
d)
To make sugars
53.
What are the two products of the light reactions that are needed for the calvin cycle?
a)
NAD and NADPH
b)
NADP + and Glucose
c)
NADPH and ATP
d)
Oxygen and NADPH
54.
What provides the reducing power for the Calvin cycle?
a)
ATP
b)
ADP
c)
NADP
d)

NADPH

55.
What provides the energy for the Calvin cycle?
a)
ATP
b)
ADP
c)

NAD

d)

O2

56.
Where does the light independent reaction take place?
a)
Matrix
b)
Stroma
c)
Thylakoid membrane
d)
Cytoplasm
57.

What is the waste-product of light-dependent reaction?

a)

oxygen

b)

water

c)

carbon dioxide

58.

Which of the following is not needed to start the light reaction

a)

H2O

b)

ADP + P

c)

CO2

59.

Choose the statement that best describes light reaction.

a)

It converts CO2 to sugar molecule

b)

It converts light energy to chemical energy of ATP and NADPH

c)

It takes place in the stroma

60.

Where does light reactions take place?

a)

Stroma

b)

Thylakoid

c)

Cytoplasm

61.

The molecule that comes out of the Calvin Cycle to produce glucose, and polymers like cellulose is:

a)

RuBP

b)

GP3

c)

3-PG

d)

G3P

62.

The first molecule formed after CO2 is added to the Calvin Cycle is:

a)

RuBP

b)

G3P

c)

PGA

d)

Rubisco

63.

The enzyme responsible for Carbon Fixation in C3 Photosynthesis is

a)

RuBisCo

b)

PEP Carboxylase

c)

Hexokinase

d)

Pyruvate Dehydrogenase

64.

The CO2 used in the Calvin Cycle originates from ___________.

a)

The light phase

b)

The breakdown of the remaining G3P's

c)

Diffusion through the stoma

d)

Lumen of the Thylakoid

65.

Main products of the Calvin Cycle

a)

Oxygen, NADP+, ADP

b)

Glucose, CO2, ADP

c)

ADP, NADP+, Glucose

d)

ATP, NADPH, Oxygen

66.

A plant using the C4 pathway will

a)

fix CO2 into a four carbon sugar instead of a three carbon sugar

b)

close the stomata during the day

c)

produce a four carbon sugar instead of glucose

d)

not need ATP from the light reactions

67.

Plants can close their stomata when the temperature is hot

a)

To prevent water loss

b)

To prevent loss of oxygen

c)

To prevent loss of carbon dioxide

d)

To bring in more carbon dioxide

68.

The six carbon sugar initially made in the Calvin Cycle is unstable and breaks into two molecules of

a)

ATP

b)

G3P

c)

RuBP

d)

3-PGA

69.

Main products of the Calvin Cycle

a)

Oxygen, NADP+, ADP

b)

Glucose, CO2, ADP

c)

ADP, NADP+, Glucose

d)

ATP, NADPH, Oxygen

70.

The Calvin Cycle occurs in the

a)

Thylakoid

b)

Grana

c)

Inner membrane of chloroplast

d)

Stroma

71.
Where do NADP+ and ADP produced in the Calvin cycle go? 
a)
Back to the light reactions
b)
out of the chloroplast
72.
Which enzyme joins CO2 and RuBP?
a)
NADP+ reductase
b)
rubisco
c)
ATP synthase
73.
What is the name of the simple sugar that is produced in photosynthesis?
a)
Sucrose
b)
Dextrose
c)
Glucose
d)
Lactose
74.
True or False.   The Calvin Cycle can happen at night.
a)
true
b)
false
75.
Which of the following is NOT a reactant of the dark reactions?
a)
NADPH
b)
ATP
c)
Oxygen
d)
Carbon dioxide
76.
In green plants, the primary function of the Calvin cycle is to
a)
Use ATP to release carbon
b)
Split water to release oxygen.
c)
Construct simple sugars from carbon dioxide.
d)
Use NADPH to release carbon
77.
What happens to the remaining G3P molecules in the last step of the dark reactions?
a)
They are used to make glucose.
b)
They are reshuffled to make CO2 by adding ATP.
c)
They exit the cycle.
d)
They are reshuffled to make RuBP by adding ATP. 
78.
The two main stages of photosynthesis are the
a)
light reactions and respiration
b)
dark reactions and the Calvin cycle 
c)
light reactions and the Calvin cycle
d)
dark reactions and fermentation
79.
How many G3P molecules make one molecule of glucose? 
a)
1
b)
2
c)
3
d)
4
80.

Which of the following is true of the Calvin Cycle?

a)

carbon dioxide and energy (ATP and NADPH) are used to make organic compounds

b)

energy is absorbed from sunlight and converted to chemical energy stored in ATP and NADPH

c)

Occurs in the thylakoid

d)

Occurs in the cytoplasm

81.

The six carbon sugar initially made in the Calvin Cycle is unstable and breaks into two molecules of

a)

ATP

b)

G3P

c)

RuBP

d)

3-PGA

82.

5 carbon sugar that combines with CO2 in the Calvin Cycle

a)

3-PGA

b)

G3P

c)

RuBP

d)

Glucose

83.

The Calvin Cycle occurs in the

a)

Thylakoid

b)

Grana

c)

Inner membrane of chloroplast

d)

Stroma

84.

Main products of the Calvin Cycle

a)

Oxygen, NADP+, ADP

b)

Glucose, CO2, ADP

c)

ADP, NADP+, Glucose

d)

ATP, NADPH, Oxygen

85.

Active transport is when molecules move from....

a)

high concentration to low concentration with NO energy

b)

low concentration to high concentration with NO energy

c)

high concentration to low concentration with energy

d)

low concentration to high concentration with energy

86.

A type of active transport when a cell takes in large amounts of solids

a)

pinocytosis

b)

exocytosis

c)

phagocytosis

d)

osmosis

87.

A type of active transport which a cell takes in a large amount of nutrients.

a)

endocytosis

b)

exocytosis

c)

diffusion

d)

osmosis

88.

Why can animal cells burst in a hypotonic solution and plant cells cannot?

a)

animal cells have a cell membrane

b)

plant cells have a cell wall

c)

animal cells have many smaller vacuole

d)

plant cells have one large vacuole

89.
Does A require any energy?
a)
Yes 
b)
No
90.
The molecules in B are to large to get across the membrane. What structure helps it get in?
a)
Phospholipids
b)
Marker proteins
c)
Transport proteins
d)
Cholesterol
91.
What will happen to molecule X?
a)
It will move from side A to B
b)
It will move from side B to A
c)
Nothing it is to large
92.
This image is said to be in equilibrium, what kind of solution is it?
a)
Hypotonic
b)
Hypertonic
c)
Isotonic
93.
What process is C referring to?
a)
Passive Transport
b)
Diffusion
c)
Osmosis
d)
Active Transport
94.
Water will move?
a)
Into the cell
b)
Out of the cell
c)
Neither into or out of the cell
95.
What will happen to this cell?
a)
It will shrink and shrivel up
b)
It will swell and get bigger
c)
Nothing will happen
96.
What type of solution is this?
a)
Isotonic
b)
Hypotonic
c)
Hypertonic
d)
Adcockotonic
97.
The space from H-I represents the?
a)
Phospholipid bilayer
b)
Marker protein
c)
Lipid tail
d)
Channel protein
98.
A2 represents what part of the phospholipid?
a)
Hydrophilic phosphate head
b)
Hydrophobic lipid tail
c)
Cholesterol
d)
Hydrophobic lipid head
99.
What structure is labeled G?
a)
Channel Protein
b)
Phospholipid
c)
Marker Protein
d)
Phosphate head
100.
What structure is labeled A
a)
Marker Protein
b)
Receptor Protein
c)
Phospholipid
d)
Cholesterol
101.

Active transport movement requires a helper molecule called ___________ to make it work.

a)

Enzyme

b)

ATP

c)

ADP

d)

Coenzyme

102.

The resulting force of water against the cell wall of a plant cell is called__________________.

a)

Turgor pressure

b)

Cell wall force

c)

Plasmodesmata channeling

d)

Transpiration

103.

In a ________________ cell condition, water flows outside of the cell.

a)

Hypertonic

b)

Hypotonic

c)

Istotonic

d)

Receptor protein

104.

In an isotonic solution, water moves...

a)

In and out of a cell equally

b)

Out of the cell

c)

Inside the cell

d)

Parallel to the cell

105.

Substances that move across a membrane with the help of proteins is called ___________________.

a)

Osmosis

b)

Facilitated diffusion

c)

Active transport

d)

Isotonic movement

106.

The diffusion of water across a membrane is known as _____________________

a)

Osmosis

b)

Diffusion

c)

Active transport

d)

Hypertonicity

107.

Cell membranes have the ability to allow certain molecules in and out based on a variety of factors. This is called _________________________.

a)

Selective permeability

b)

Enzyme selectivity

c)

Protein compatibility

d)

Impermeable selectivity

108.

During ______________ inhibition, a substance binds to a non-active site location on the enzyme forcing it to change shape.

a)

Competitive

b)

Non-competitive

c)

Co-factor site

d)

Active-site

109.

Non-protein "helpers" called _______________ are substances that must be present in order to make a reaction work.

a)

Co-factors

b)

Co-enzymes

c)

Co-saccharides

d)

Co-nucleotides

110.

What temperature range is BEST for human body enzymes?

a)

37o - 40oC

b)

25o - 30oC

c)

45o - 55oC

d)

0o - 5oC

111.

Enzymes that cause only one chemical reaction to begin are said to be ___________ enzymes.

a)

Temperature-based

b)

Specific

c)

Acid-based

d)

Water-based

112.

Enzymes are MOST effective when they...

a)

Overcome chemical potential energy to cause a reaction to begin.

b)

Provide enough glucose to power a chemical reaction.

c)

Raise the temperature in the reaction environment.

d)

Lower the pH of the chemical reaction

113.

Which one of the following molecules is too unstable for long-term energy use by the cell?

a)

ATP

b)

Glucose

c)

Lipids

d)

Nucleotides

114.

The energy currency of living cells is __________.

a)

ATP

b)

ADP

c)

Glucose

d)

Glucose-6-biphosphate

115.

Potential energy differs from kinetic energy in that...

a)

Potential energy is energy at rest

b)

Potential energy is the energy of motion

c)

Potential energy is found in reacted chemicals

d)

Potential energy is used when a rabbit runs from a wolf

116.

What is the purpose of glycolysis?

a)

To generate ATP

b)

To synthesize larger biomolecules

c)

To carry electrons to the electron transport system

d)

To break down large biomolecules

117.

What is the final product of glycolysis?

a)

Pyruvate

b)

Acetyl-CoA

c)

Citric acid

d)

NADH

118.

How many ATP molecules are used up in the conversion of glucose to fructose 1,6-bisphosphate?

a)

0 ATP

b)

1 ATP

c)

2 ATP

d)

3 ATP

119.

Where does glycolysis occur?

a)

Inside the mitochondria

b)

In the cytosol of the cell

c)

In the nucleus of the cell

d)

In the endoplasmic reticulum

120.

What are NADH and FADH2?

a)

Enzymes involved in glycolysis

b)

Waste products of aerobic metabolism

c)

Electron carriers

d)

Key intermediates in metabolic pathways

121.

What is the unit used to measure energy within the body?

a)

Kilocalorie

b)

Large Calorie

c)

Small Calorie

d)

Degree Celsius

122.

What are catabolic reactions?

a)

Reactions that release energy through the breakdown of large biomolecules

b)

Reactions that utilize energy to synthesize larger biomolecules

c)

Reactions that transfer energy from temporary carriers to covalent bonds

d)

Reactions that carry electrons to the electron transport system

123.

What is the concept of metabolism?

a)

The breakdown of large biomolecules

b)

The synthesis of larger biomolecules

c)

All the chemical reactions in the body

d)

The release of energy from biomolecules

124.

Which molecules are joined together to make proteins?

a)

fatty acids

b)

nucleic acids

c)

amino acids

d)

acetic acids

125.

How does the plasma membrane (cell membrane) help a cell maintain homeostasis?

a)

Controls materials that enter and exit the cell

b)

Converts ATP to glucose for energy storage

c)

Catalyzes protein synthesis

d)

Recieves signals for DNA replication

126.

Select all that apply: What are the functions of membrane proteins?

a)

transport

b)

enzymatic activity

c)

anabolic pathways

d)

intercellular joining

127.

Which is NOT a characteristic of passive transport?

a)

The movement of a substance w/o the expenditure of energy

b)

Facilitated diffusion

c)

Osmosis

d)

Against the concentration gradient

128.

Phagocytosis and pinocytosis are forms of what method of transport

a)

Passive Transport

b)

Exocytosis

c)

Active Transport

d)

Endocytosis

129.

The breaking down of complex molecules into simpler ones with the release of energy is what type of metabolic pathway?

a)

Cytobolic

b)

Catabolic

c)

Anabolic

d)

Aerobolic

130.

Select all that apply: What are the 3 kinds of work done by the cell?

a)

Transport

b)

Potential

c)

Chemical

d)

Mechanical

131.

Select all that apply: What is produced during Glycolysis?

a)

2 ATP (netted)

b)

2 NADH

c)

2 FADH2

d)

2 Pyruvates

132.

When Delta G is less than zero...

a)

The reaction is favorable

b)

The reaction is exergonic

c)

The reaction is endergonic

d)

The products have less energy than the reactants

133.

Which is NOT a characteristic of the 1st Law of Thermodynamics?

a)

Changes in total energy of a system only depends on the initial and final states

b)

Energy is neither created nor destroyed

c)

Energy can undergo transformation from one form to another

d)

A reaction will be spontaneous only if the entropy of a system and it's surroundings increase

134.

Where does the Krebs Cycle occur?

a)

Stroma

b)

Cytoplasm

c)

Thylakoid

d)

Mitochondria Matrix

135.

Pinocytosis means

a)

Cell- eat

b)

Cell- drink

c)

Taking in of solid particles

d)

Cell- digestion

136.

A prokaryotic cell...

a)

Has a membrane-bound nucleus or other organelles

b)

Does not have a membrane-bound nucleus or other organelles

c)

Has no DNA and no nucleus

d)

Has DNA and a nucleus

137.

Select all that apply: What are the parts to a chloroplast?

a)

Stroma

b)

Cytoplasm

c)

Thylakoid

d)

Granum

138.

The sum of my reactants is 50 and the sum of my products is 25, what is the change of energy?

a)

75

b)

25

c)

-25

d)

-75

139.

If a cell has 25% water and 50% water outside of the cell, What type of solution is this?

a)

Hypertonic

b)

Hypotonic

c)

Isotonic

140.

Select all that Apply: What are the 3 parts of a nucleus?

a)

Nuclear Envelope

b)

Chromosomes

c)

Chromatin

d)

Nucleolus

141.

Select all that apply: What are the 2 accessory photosynthetic pigments?

a)

Chlorophyll A

b)

Chlorophyll B

c)

Carotenoids

142.

What type of hydrophobic macromolecule is oil?

a)

carbohydrate

b)

lipid

c)

protein

d)

nucleic acids

143.

The diagram shows a beaker of water and molecules of red dye at the beginning of an experiment (Time 1) and at the end after 30 minutes (Time 2). Which of the following best explains what happened?

a)

Diffusion because molecules of food eye spread from areas where they are more concentrated to areas where they are less concentrated.

b)

Active transport because molecules of food dye spread from areas where they are more concentrated to areas where they are less concentrated.

c)

Osmosis because molecules of water spread from areas where they are more concentrated to areas where they are less concentrated.

d)

Active transport because molecules of water spread from areas where they are more concentrated to areas where they are less concentrated.

144.

The diagram below represents a cell. Carbon dioxide and oxygen can passively diffuse across the cell membrane.


Based on the distribution of these molecules inside and outside the cell, what will most likely happen after a certain amount of time?

a)

The concentration of CO2 will remain the same inside the cell.

b)

The concentration of O2 will remain the same outside the cell.

c)

The concentration of CO2 will decrease outside the cell.

d)

The concentration of O2 will increase inside the cell.

145.

What best describes the function of cell membrane?

a)

It provides genetic information for the cell.

b)

It regulates what molecules enter and leave the cell.

c)

It stores water and waste for the cell.

d)

It assembles and sorts proteins for the cell.

146.

The movement of water across a semipermeable membrane is called

a)

passive transport.

b)

diffusion.

c)

active transport.

d)

osmosis

147.

Why does active transport require energy to move molecules of a substance across a cell membrane?

a)

Lack of the substance makes the cell weak.

b)

The substance moves from high to low concentration, with the concentration gradient.

c)

The cell membrane is very thick.

d)

The substance moves from low to high concentration, against the concentration gradient.

148.

The diagram below shows the movement of material from the inside of a cell to the outside of the cell through a protein channel. What type of cellular transport is occurring?

a)

Active transport because molecules are moving away from equilibrium

b)

Active transport because molecules are moving toward equilibrium

c)

Passive transport because molecules are moving away from equilibrium

d)

Passive transport because molecules are moving toward equilibrium

149.

The diagram below represents movement of a large molecule across a membrane. Which cellular process is represented by this diagram?

a)

passive transport

b)

osmosis

c)

diffusion

d)

active transport

150.

According to the diagram of an animal cell, which numbered structure represents the cell membrane?

a)

1

b)

2

c)

3

d)

4

151.

The diagram reveals that lipids and proteins are both parts of cell membranes. They have different functions because lipids work to hold the cell membrane together, and proteins

a)

stiffen the cell membrane.

b)

move chemical molecules across the cell membrane.

c)

store water in the cell membrane.

d)

create fibers that attach to the ends of lipids.

152.
Mechanical and chemical breakdown of food into small molecules that cells can absorb and use
a)
Equilibrium
b)
Selective Permeability
c)
Digestion
d)
Irritability
153.
The property of a cell membrane that allows some materials to pass through while keeping other materials out - (like a cell membrane)
a)
Equilibrium
b)
Selective Permeability
c)
Digestion
d)
Homeostasis
154.
The state where molecules of a substance are spread out EVENLY throughout a space; equal
a)
Equilibrium
b)
Selective Permeability
c)
Homeostasis
d)
Metabolism
155.
Diffusion of WATER (H2OOOOOOH, _________) into and out of a cell (moves through the cell membrane constantly).
a)
Diffusion
b)
Osmosis
c)
Active Transport
d)
Passive Transport
156.
Movement of molecules from an area of a HIGH concentration to an area of LOW concentration
a)
Diffusion
b)
Osmosis
c)
Active Transport
d)
Passive Transport
157.
Movement of material across a cell without the use of energy (water does this)
a)
Diffusion
b)
Osmosis
c)
Active Transport
d)
Passive Transport
158.
Energy requiring process that can "carry" a substance into a cell
a)
Diffusion
b)
Osmosis
c)
Active Transport
d)
Passive Transport

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