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Biology 20 Unit C Review

Total questions: 83

Worksheet time: 4hrs 9mins

Name
Class
Date
1.
According to this absorption spectrum, what color is not used by the chlorophyll pigments?
a)
green
b)
blue
c)
yellow
d)
red
2.

Where do the light-dependent reactions happen?

a)
mitochondria membrane
b)
thylakoid membrane
c)
stroma
d)
central vacuole
3.

What is the main purpose of the light-dependent reactions?

a)

To capture energy to pass to the Calvin cycle

b)
To capture energy and make sugar
c)
To reflect green light
d)
To make sugars
4.

What supplies the electron that is lost in photosystem II?

a)
oxygen
b)
water
c)
glucose
d)
rubisco
5.
What does ATP synthase do?
a)

generates ATP by chemiosmosis

b)

breaks down ATP by chemiosmosis

c)

breaks down NADPH

d)

generates NADPH

6.

ATP gets formed in the light-dependent reaction by which process?

a)
Chemiosmosis
b)
Photosmosis
c)
Diffusion
d)

Krebs cycle

7.
Where are photosystems located?
a)
thylakoid space
b)
thylakoid membrane
c)
central vacuole
d)
stroma
8.

What supplies the electrons that are lost in photosystem I?

a)

the electrons from photosystem II

b)
water
c)
glucose
d)
oxygen
9.

What is the final product of photosystem I?

a)
NADPH
b)
ATP
c)
NADP+
d)
glucose
10.

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

11.

Which of the following is NOT a product of the light reactions?

a)

oxygen

b)

NADPH

c)

ATP

d)

glucose

12.
What gas does the process of photosynthesis release into the atmosphere?
a)
oxygen
b)
carbon dioxide
c)
water
d)
nitrogen
13.

Thylakoids are arranged in stacks called:

a)

lamellae

b)

stroma

c)

grana

d)

matrices

14.

The gel-like material that surrounds the grana is called the:

a)
lamellae
b)

matrix

c)
thylakoid
d)
stroma
15.
The principal chemical compound that living things use to store energy is
a)
DNA
b)
ATP
c)
H2O
d)
CO2
16.

Energy from the sun is used to make ATP in the

a)

light-independent reactions

b)

dark reactions

c)

light-dependent reactions

d)
Calvin cycle
17.
Where does the Calvin cycle take place?
a)

stroma

b)
thylakoid membrane
c)
outer membrane of the chloroplast
d)

interior space of the thylakoid

18.
When oxygen is released as a result of photosynthesis, it is a direct by-product of
a)
reducing NADP+
b)
splitting water molecules
c)
chemiosmosis
d)
electron transfer in photosystem II and I
19.
What does NADPH do? 
a)
carries electrons to the Calvin cycle
b)

carries electrons to the electron transport system

20.

Where do NADP+ and ADP from the Calvin cycle go? 

a)

back to the light-dependent reactions

b)
out of the chloroplast
21.

Reduction in a reduction-oxidation reaction refers to

a)

a molecule gaining electrons

b)

a molecule losing electrons

c)

a molecule getting smaller

d)

a molecule getting bigger

22.

Which molecule absorbs the energy of a photon in photosynthesis?

a)

ATP

b)

glucose

c)

chlorophyll

d)

water

23.

When electrons in the reaction-center chlorophyll become excited, they escape to a nearby:

a)

primary electron acceptor molecule

b)

secondary electron acceptor molecule

c)

chloroplast

d)

cellular membrane

24.

Plants produce oxygen when they photosynthesize. Where does the oxygen come from?

a)

splitting water molecules

b)

ATP synthesis

c)

the electron transport chain

d)

chlorophyll

25.

Where does the Krebs cycle take place?

a)

cytoplasm

b)

inner mitochondrial membrane

c)

outer mitochondrial membrane

d)

mitochondrial matrix

26.

What's the chemical formula for glucose?

a)

6C6H12O6

b)

C12H6O12

c)

C6H12O6

d)

CHO

27.

The splitting of a glucose molecule is called:

a)
synthesis
b)
denaturalization
c)
glycolysis
d)
dissolving
28.
The two type of fermentation are alcohol and _____________ acid fermentation. 
a)
lactic
b)
sulfuric
c)
hydrochloric
d)
acetic 
29.

What is the name of the first step of cellular respiration?

a)

glycolysis

b)
Kreb's Cycle
c)

electron transport system

d)

fermentation

30.
Where does glycolysis take place?
a)

cytoplasm

b)

stroma

c)

thylakoid membrane

d)

mitochondrial matrix

31.
What is the correct equation for cellular respiration?
a)
6O2 + C6H12O6 -> 6CO2 + 6H2O + Energy
b)
6O2 + C6H12O6 + Energy -> 6CO2 + 6H2O
c)
6CO2 + 6H2O -> 6O2 + C6H12O6 + Energy
d)
6CO2 + 6H2O + Energy -> 6O2 + C6H12O6
32.
This molecule contains three phosphate groups
a)
ADP
b)
ATP
c)
Mitochondria
d)
Nucleus
33.
This molecule contains two phosphate groups
a)
ADP
b)
ATP
c)
Mitochondria
d)
Nucleus
34.
Which molecule isn't an energy carrier?
a)
FADH2
b)
NADH
c)
oxygen
d)
ATP
35.
Glycolysis results in a net gain of how many ATP?
a)
0
b)
2
c)
4
d)
1
36.
Which is a product of glycolysis?
a)
pyruvate
b)
carbon dioxide
c)
water
d)
glucose
37.
______________ produces the most ATP.
a)
photosnthesis
b)
aerobic respiration
c)
anaerobic respiration
d)
glycolysis
38.
What type of respiration requires oxygen?
a)

aerobic

b)

anaerobic

39.
Which of the following is not a requirement for glycolysis?
a)

oxygen

b)
ATP
c)
NAD+
d)

glucose

40.
The role of oxygen in cellular respiration is to
a)
accept electrons
b)
produce ATP
c)
groom pyruvate
d)
release ions
41.

Fermentation occurs in the:

a)
cytoplasm
b)

mitochondrial membrane

c)
cell membrane
d)
cristae
42.
In order to create NADH and FADH2 , NAD and FAD must be 
a)
reduced
b)
oxidized
c)
replaced
d)
ionized
43.
The waste products of alcoholic fermentation are ethanol and 
a)
CO2
b)
pyruvate
c)
citrate
d)
ADP
44.
Fermentation is:
a)

cellular respiration 

b)

light-dependent

c)

aerobic

d)

anaerobic

45.
How are lactic acid and alcoholic fermentation similar?
a)
They have the same products
b)
They have the same reactants
c)
They both require oxygen
d)
They occur in the same organisms
46.

Which pathway is common to both fermentation and cellular respiration?

a)

Krebs cycle

b)

electron transport chain

c)

glycolysis

d)

formation of Acetyl CoA

47.
What are the products of cellular respiration?
a)
Energy (ATP), Water, and Carbon DIoxide.
b)
Water and Oxygen
c)
Oxygen and Carbon Dioxide
d)
Water and Energy (ATP)
48.

Lactic acid fermentation occurs in your muscles after a workout because your cells are struggling to get:

a)

glucose

b)

sunlight

c)

oxygen

d)

water

49.
Which step of cellular respiration makes the most ATP?
a)

glycolysis

b)

Kreb's cycle

c)

electron transport system

d)

light-dependent reactions

50.
The folding of the inner membrane in the mitochondria is called the
a)
stroma
b)
thylakoid
c)
cristae
d)
matrix
51.
Energy is released from ATP when
a)
a phosphate group is added
b)
adenine bonds to ribose
c)
ATP is exposed to sunlight
d)
a phosphate group is removed
52.

All of the chemical reactions of the cell are called

a)

metabolism

b)

catabolism

c)

redox reactions

d)

anabolism

53.
How do enzymes speed up chemical reaction?
a)

by increasing activation energy

b)

by decreasing activation energy

c)

by increasing total energy

d)

by decreasing total energy

54.
Which type of reactions release energy when they break down large molecules into smaller ones?
a)
anabolic
b)
catabolic
55.
Which type of reactions require energy to build large molecules from smaller ones?
a)
anabolic
b)
catabolic
56.

Which of the following sequences is in the correct order?

a)

Krebs->Glycolysis->ETS

b)

ETS->Krebs->Glycolysis

c)

Glycolysis->Krebs->ETS

d)

ETS->Glycolysis->Krebs

57.
Which type of fermentation occurs in muscles?
a)

ethanol fermentation

b)

lactic acid fermentation

58.

What are the main products the light dependent reaction?

a)
ATP
b)
NADPH
c)

ATP and NADPH

d)
glucose
59.
Chlorophyll is important in the
a)
formation of ADP from NADP+
b)

reactions of the Calvin cycle

c)

absorption of light energy

d)

formation of carbon dioxide

60.

Where do the light-independent reactions take place?

a)
nucleus
b)
matrix
c)
cristae
d)
stroma
61.
During what stage of photosynthesis are ATP and NADPH converted to ADP and NADP+?
a)

light-dependent reactions

b)

light-independent reactions

62.
Which process does G refer to?
a)

glycolysis

b)

Calvin-Benson Cycle

c)

light-dependent reactions

d)

Kreb's cycle

63.
Chlorophyll absorbs a high percentage of ______ and ______ light
a)
green and yellow
b)
red and blue
64.
A weightlifter is using heavy weights in short bursts for a competition. Because his muscle cells are not able to take in enough oxygen to make very much ATP the weightlifter begins to get fatigue in his muscles. Which of the following processes is most likely going on in the muscles of the weightlifter as he competes in his event?
a)
As the cells run out of oxygen they switch to anaerobic respiration, which allows the cell to make small amounts of ATP in the absence of oxygen.
b)
As the cells run out of oxygen, they die off gradually and the weightlifter's muscles have fewer contracting muscle cells.
c)
The cells will never run out of oxygen if the weightlifter is breathing.
d)
As the cells run out of oxygen, they will continue to make the same amount of ATP, since oxygen is not required to make ATP.
65.

Which of the following molecules is not needed for the Calvin-Benson Cycle?

a)
CO2
b)
ATP
c)
NADPH
d)
H2O
66.
Where does the carbon come from that is used to form glucose?
a)
The soil
b)
CO2 in the air
c)
From other carbohydrates
d)
Calvin Cycle
67.
What is the primary function of the Calvin cycle?
a)
regenerate ATP for use in the light reactions of photosynthesis
b)
produce carbon dioxide for use in the light reactions of photosynthesis
c)
produce oxygen by oxidizing water
d)
produce simple sugars from carbon dioxide
68.

The H+ concentration gradient is formed to

a)

make NADPH

b)

split a water molecule

c)

generate ATP

d)

form water

69.

Which of the following is directly associated with photosystem I?

a)
harvesting light energy to make ATP
b)

receiving electrons from the electron transport system

c)
generation of molecular oxygen
d)
extraction of hydrogen electrons from the splitting of water
70.
In a plant cell, where are ATP synthase complexes located?
a)
thylakoid membranes only
b)
inner mitochondrial membranes only
c)
thylakoid membrane and inner mitochondrial membranes
d)
thylakoid membrane and plasma membranes
71.
Which of the following statements about the relationship between photosynthesis and cellular respiration is true?
a)
In cellular respiration the biochemical pathways of photosynthesis run in reverse.
b)
In photosynthesis the biochemical pathways of cellular respiration run in reverse.
c)
Cellular respiration occurs only in animals and photosynthesis occurs only in plants.
d)
Cellular respiration is catabolic and photosynthesis is anabolic.
72.
In photosynthetic cells, synthesis of ATP by chemiosmosis occurs during
a)
photosynthesis only
b)
cellular respiration only
c)
both photosynthesis and cellular respiration
d)
photophosphorylation only
73.
Plants with the largest amount of which pigment will be best suited for growing conditions where light has a green hue.
a)

Chlorophyll A

b)
Chlorophyll B
c)
Carotenoids
d)

A combination of all three

74.

In photosystem II of the light-dependent reactions, photons from sunlight excite electrons in the chlorophyll molecules which then enter the electron transport system. What replaces these electrons lost from the chlorophyll?

a)

electrons from photosytem I

b)

electrons released when water is split

c)

electrons from NADPH

d)

electrons from reduction of carbon dioxide

75.

A plant has a unique photosynthetic pigment. The leaves of this plant appear to be reddish yellow. What wavelengths of visible light are being absorbed by this pigment?

a)

red and yellow

b)

blue and violet

c)

green and yellow

d)

blue, green, and red

e)

green, blue, and yellow

76.

Which of the following photosynthetic pigments can be found at the photosystem reaction center?

a)

chlorophyll b

b)

β-carotene

c)

α-carotene

d)

chlorophyll a

77.

The 5-carbon compound that combines with CO2 in the Calvin-Benson cycle:

a)

NADPH

b)

PGAL

c)

RuBP

d)

glucose

78.
The diagram shows photosystems II and I. What is a major event that occurs when matter and energy moves through photosystem II?
a)
ATP is synthesized
b)
Water molecules are split
c)
Chlorophyll is produced
d)
CO2 is used
79.

Match the NAME of the chemical to its chemical formula

a)

O2

1.

Oxygen

b)

CO2

2.

Carbon Dioxide

c)

H2O

3.

Water

d)

C6H12O6

4.

Glucose

80.

What chemical reaction is this?

a)

Photosynthesis

b)

Cellular Respiration

81.

What chemical reaction is this?

a)

Photosynthesis

b)

Cellular Respiration

82.
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
83.
What supplies the electron that is lost in PS II?
a)
oxygen
b)
water
c)
glucose
d)
rubisco

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