wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

photosynthesis additional

Total questions: 139

Worksheet time: 1hrs 25mins

Name
Class
Date
1.
Which of the following are products of the light reactions of photosynthesis that are utilized in the Calvin cycle?
a)
CO2 and glucose
b)
H2O and O2
c)
electrons and H+
d)
ATP and NADPH
2.
Where does the Calvin cycle take place?
a)
stroma of the chloroplast
b)
thylakoid membrane
c)
outer membrane of the chloroplast
d)
interior of the thylakoid membrane
3.
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
4.
Which of the following events occurs in the light reactions of photosynthesis?
a)
NADP+ is produced
b)
ATP is consumed to yield ADP
c)
carbon dioxide is fixed in organic molecules
d)
light is absorbed and funneled to reaction-center chlorophyll a
5.
Which of the following is directly associated with Photosystem I?
a)
harvesting light energy to make ATP
b)
receiving electrons from the thylakoid membrane ETC
c)
generation of molecular oxygen
d)
extraction of hydrogen electrons from the splitting of water
6.
What is the primary function of cyclic electron flow?
a)
to produce additional NADPH
b)
to produce additional ATP
c)
to produce additional oxygen
d)
to produce additional carbon dioxide
7.
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
8.
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.
9.
Where are the molecules of the electron transport chain associated with photophosphorylation located in plant cells?
a)
thylakoid membanes of chloroplasts
b)
stroma of chloroplasts
c)
matrix of mitochondria
d)
outer membrane of chloroplasts
10.
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
11.
What is the relationship between wavelength of light and the quantity of energy per photon?
a)
they have a direct, linear relationship
b)
they are inversely related
c)
they are logarithmically related
d)
they are only related in certain parts of the spectrum
12.
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
13.
Where do the enzymatic reactions of the Calvin cycle take place?
a)
stroma of the chloroplast
b)
thylakoid membranes
c)
matrix of the mitochondria
d)
thylakoid space
14.
In C3 photosynthesis, the reactions that require ATP take place in
a)
the light reactions alone
b)
the calvin cycle only
c)
both the light reactions and the calvin cycle
d)
the citric acid cycle
15.
Reactions that consume CO2 take place in
a)
the light reactions of photosynthesis only
b)
the calvin cycle only
c)
the light reactions and the calvin cycle
d)
the calvin cycle and the citric acid cycle
16.
Which of the following statements best represents the relationships between the light reactions and the Calvin cycle?
a)
The light reactions provide ATP and NADPH to the Calvin cycle, and the Calvin cycle returns ADP, ℗i, and NADP+ to the light reactions.
b)
The light reactions provide ATP and NADPH to the carbon fixation step of the Calvin cycle, and the Calvin cycle provides water and electrons to the light reactions.
c)
The light reactions supply the Calvin cycle with CO2 to produce sugars, and the Calvin cycle supplies the light reactions with sugars to produce ATP.
d)
The light reactions provide the Calvin cycle with oxygen for carbon fixation, and the Calvin cycle provides the light reactions with sugars to produce ATP.
17.
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.
18.
Compared to C3 plants, C4 plants
a)
) have higher rates of photorespiration.
b)
can continue to fix CO2 even at relatively low CO2 concentrations and high oxygen concentrations.
c)
do not use rubisco for carbon fixation.
d)
grow better under cool, moist conditions.
19.
In chemiosmosis in mitochondria, protons flow from the intermembrane space into the matrix, whereas in chemiosmosis in chloroplasts, protons flow from
a)
stroma into the cytosol
b)
stroma to the thylakoid space
c)
thylakoid space to the stroma
d)
intermembrane space to the stroma
20.
In mitochondria, the electron transport chain pumps protons from the matrix into the intermembrane space, whereas in chloroplasts, the electron transport chain pumps protons from
a)
matrix to stroma
b)
stroma to thylakoid space
c)
intermembrane space to stroma
d)
thylakoid space to stroma
21.
Where does photosynthesis take place in the plant cell?
a)
Nucleus
b)
Cytoplasm
c)

Chloroplast

d)
Mitochondria
22.
What are the two products of photosynthesis?
a)
Oxygen and Carbon Dioxide
b)

Oxygen and Sugar

c)
Sunlight and Sugar
23.
Pigment in green plants that captures the energy in sunlight is called _______.
a)
Pigment
b)
Chlorophyll
c)
Stomata
d)
Green Thing
24.
The three things plants need are sunlight, water, and CO2 for photosynthesis.
a)
True
b)
False
25.
Which of the following is the correct equation for PHOTOSYNTHESIS?
a)
CO2 + light + H2O --> O2 + Sugar
b)
CO2 + sugar + H2O --> O2 + light
c)
O2 + light + H2O --> CO2 + Sugar
d)
CO2 + O2 + H2O --> Light+ Sugar
26.

Which plant organelle transforms light into glucose to use as food?

a)

Mitochondria

b)

Vacuoles

c)

Chloroplasts

d)

Nucleus

27.
The main source of energy for all life comes from ____.
a)
the Earth
b)
the moon
c)
the sun
d)
the food we eat/make
28.
What are the products of photosynthesis?
a)
water and carbon dioxide
b)
oxygen and glucose
c)
oxygen and carbon dioxide
d)
oxygen and water
29.
What are the reactants of photosynthesis?
a)
carbon dioxide and oxygen
b)
water and oxygen
c)
carbon dioxide and water
d)
water and glucose
30.

This is the chemical formula for a molecule of...

a)

Oxygen

b)

Carbon dioxide

c)

Glucose

d)

Water

31.

What is the purpose of photosynthesis?

a)

To release energy

b)

To create glucose

c)

To grow

d)

To get oxygen for respiration

32.

Which of these are limiting factors for photosynthesis? Choose 3 answers.

a)

Light intensity

b)

CO2 concentration

c)

Temperature

d)

Light

e)

CO2 levels

33.
Most plants appear green because chlorophyll
a)
absorbs green light.
b)
absorbs violet light.
c)
reflects green light.
d)
does not absorb violet light.
34.

Main products of the Calvin Cycle

a)

Oxygen, NADP+, ADP

b)

Glucose, CO2, ADP

c)

ADP, NADP+, Glucose

d)

ATP, NADPH, Oxygen

35.

The Calvin Cycle occurs in the

a)

Thylakoid

b)

Grana

c)

Inner membrane of chloroplast

d)

Stroma

36.
Where do the light reactions happen?
a)
mitochondria membrane
b)
thylakoid membrane
c)
stroma
d)
central vacuole
37.

What supplies the electrons during photolysis?

a)

oxygen

b)

water

c)

glucose

d)

rubisco

38.

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

39.

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

a)

H2O

b)

ADP + P

c)

CO2

40.

What is the unit of light?

a)

proton

b)

photon

c)

photosystem

41.

What is/are the products of light independent reaction?

a)

ATP

b)

NADPH

c)

H2O

d)

C6H12O6

e)

pyruvate

42.

What is NOT the product of light dependent reaction?

a)

ATP

b)

NADPH

c)

H2O

d)

O2

43.

Which of the following light color is absorbed by plants?

a)

Red

b)

Green

c)

yellow

d)

Light green

44.

•Plants and plant-like organisms make their own food or energy (glucose) from sunlight.

a)

Chemotrophs

b)

Heterotrophs

c)

Autotrophs

d)

Saprophytes

45.

How many G3P is needed to convert to a one molecule of glucose?

a)

1

b)

2

c)

3

d)

4

e)

5

46.

Which of the following occurs in the stroma of the chloroplast?

a)

light dependent reaction

b)

electron transport chain

c)

calvin cycle

d)

photolysis

47.

The oxygen produced in photosynthesis comes from what molecule?

a)

glucose

b)

water

c)

P680

d)

ATP

48.

The photosynthetic process used by some plants to survive in a hot dry climate, like the desert?

a)

C4 Photosynthesis

b)

C3 Photosynthesis

c)

Noncyclic photophosphorylation

d)

Carbon fixation

49.

Which of the following i the source of the carbon in sugar produced during photosynthesis?

a)

carbon dioxide

b)

water

c)

rubisco

d)

ATP

50.

Which of the following is NOT a produce of the light dependent reaction?

a)

Oxygen

b)

ATP

c)

NADPH

d)

Sugar

51.

Which of the following is the main difference between cyclic and noncyclic photophosphorylation?

a)

they use different electron acceptors

b)

Only photosystem I is used during the cyclic process

c)

noncyclic photophosphorylation occurs in the stroma

d)

noncyclic photophosphorylation does not produce ATP

52.

Carbon fixation is catalyzed by what enzyme?

a)

P700

b)

NADPH

c)

phosphoglycerate

d)

rubisco

53.

The calvin cycle requires each of the following inputs EXCEPT:

a)

ATP

b)

NADPH

c)

O2

d)

CO2

54.

In the light dependent reactions, when light strikes the pigments (P700 or P680) what is the immediate result?

a)

excited electrons are passed to electron acceptors

b)

electrons are fused to form ATP

c)

glucose is produced

d)

carbon fixation occurs

55.

In the calvin cycle, more ATP than NADPH is used, how is this difference made up?

a)

the cyclic pathway creates more ATP

b)

the Calvin cycle occurs half as often as the light dependent reaction

c)

additional ATP is created from glucose

d)

excess NADPH is reused in the light reaction

56.

Which of these is the correct equation for photosynthesis?

a)

6O2 + C6H12O6 --> 6CO2 + 6H2O

b)

6O2 + 6CO2 --> C6H12O6 + 6H2O

c)

6CO2 + 12H2O --> C6H12O6 + 6H2O + 6O2

d)

6CO2 + 6H2O --> O2 + C6H12O6

57.

What protects Stomata and helps it in opening and closing?

a)

Guard Cells

b)

Leaf

c)

Stem

d)

Carbon Dioxide

58.
What molecule absorbs sunlight for photosynthesis?
a)
chloroplast
b)
thylakoid
c)
grana
d)
chlorophyll
59.

Main products of the Calvin Cycle

a)

Oxygen, NADP+, ADP

b)

Glucose, CO2, ADP

c)

ADP, NADP+, Glucose

d)

ATP, NADPH, Oxygen

60.

The Calvin Cycle occurs in the

a)

Thylakoid

b)

Grana

c)

Inner membrane of chloroplast

d)

Stroma

61.
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
62.

What is the unit of light?

a)

proton

b)

photon

c)

photosystem

63.

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

a)

H2O

b)

ADP + P

c)

CO2

64.
What leaf structure prevents water loss?
a)
spongy mesophyll
b)
cuticle
c)
stoma
d)
phloem
65.
What color of light provides the most energy to a plant?
a)
orange
b)
red
c)
blue
d)
green
66.
Which of the following are products of the light reactions of photosynthesis that are utilized in the Calvin cycle?
a)
CO2 and glucose
b)
H2O and O2
c)
electrons and H+
d)
ATP and NADPH
67.
Where does the Calvin cycle take place?
a)
stroma of the chloroplast
b)
thylakoid membrane
c)
outer membrane of the chloroplast
d)
interior of the thylakoid membrane
68.
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
69.
Which of the following events occurs in the light reactions of photosynthesis?
a)
NADP+ is produced
b)
ATP is consumed to yield ADP
c)
carbon dioxide is fixed in organic molecules
d)
light is absorbed and funneled to reaction-center chlorophyll a
70.
Which of the following is directly associated with Photosystem I?
a)
harvesting light energy to make ATP
b)
receiving electrons from the thylakoid membrane ETC
c)
generation of molecular oxygen
d)
extraction of hydrogen electrons from the splitting of water
71.
What is the primary function of cyclic electron flow?
a)
to produce additional NADPH
b)
to produce additional ATP
c)
to produce additional oxygen
d)
to produce additional carbon dioxide
72.
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
73.
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.
74.
Where are the molecules of the electron transport chain associated with photophosphorylation located in plant cells?
a)
thylakoid membanes of chloroplasts
b)
stroma of chloroplasts
c)
matrix of mitochondria
d)
outer membrane of chloroplasts
75.
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
76.
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
77.
In C3 photosynthesis, the reactions that require ATP take place in
a)
the light reactions alone
b)
the calvin cycle only
c)
both the light reactions and the calvin cycle
d)
the citric acid cycle
78.
Reactions that consume CO2 take place in
a)
the light reactions of photosynthesis only
b)
the calvin cycle only
c)
the light reactions and the calvin cycle
d)
the calvin cycle and the citric acid cycle
79.
Which of the following statements best represents the relationships between the light reactions and the Calvin cycle?
a)
The light reactions provide ATP and NADPH to the Calvin cycle, and the Calvin cycle returns ADP, ℗i, and NADP+ to the light reactions.
b)
The light reactions provide ATP and NADPH to the carbon fixation step of the Calvin cycle, and the Calvin cycle provides water and electrons to the light reactions.
c)
The light reactions supply the Calvin cycle with CO2 to produce sugars, and the Calvin cycle supplies the light reactions with sugars to produce ATP.
d)
The light reactions provide the Calvin cycle with oxygen for carbon fixation, and the Calvin cycle provides the light reactions with sugars to produce ATP.
80.
In chemiosmosis in mitochondria, protons flow from the intermembrane space into the matrix, whereas in chemiosmosis in chloroplasts, protons flow from
a)
stroma into the cytosol
b)
stroma to the thylakoid space
c)
thylakoid space to the stroma
d)
intermembrane space to the stroma
81.
In mitochondria, the electron transport chain pumps protons from the matrix into the intermembrane space, whereas in chloroplasts, the electron transport chain pumps protons from
a)
matrix to stroma
b)
stroma to thylakoid space
c)
intermembrane space to stroma
d)
thylakoid space to stroma
82.
What is one function of the other pigments  besides chlorophyll, in the chloroplast?
a)
to block damaging wavelengths of light
b)
to absorb different wavelengths than the chloroplasts
c)
to provide different colors to the leaves
d)
to transfer energy to a separate photosystem beside the one using chlorophyll a and b.
83.
What supplies the electrons that are lost in PS I?
a)
the electrons from PS II
b)
water
c)
glucose
d)
oxygen
84.
How many sugar molecules are produced from every six molecules of carbon dioxide that enter the Calvin cycle?
a)
1
b)
3
c)
6
d)
12
85.

The NADP+ is

a)

oxidized during the light reaction

b)

reduced during the light reaction

c)

oxidized during the Calvin cycle

d)

reduced during the Calvin cycle

86.

Plants obtain CO2 into the chloroplast by

a)

active transport

b)

diffusion

c)

facilitated diffusion

d)

endocytosis

87.

Which plant would have the most oxygen produced in 1 hour?

a)

plant given red light only

b)

plant given blue light only

c)

plant given white light

d)

plant given green light only

88.

CO2 is used in the Calvin cycle to make molecules of

a)

NADPH

b)

glycogen

c)

G3P

d)

Rubisco

89.
Which of the following molecules is not needed for the Calvin Cycle?
a)
CO2
b)
ATP
c)
NADPH
d)
H2O
90.
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 3
91.

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

a)

RuBP

b)

Rubisco

c)

acetyl CoA

d)

G3P

92.
Where do the light reactions happen?
a)
mitochondria membrane
b)
thylakoid membrane
c)
stroma
d)
central vacuole
93.
If all four plants were watered daily but placed in a closet, receiving no sunlight, what process would NOT occur?
a)
Ingestion of carbon dioxide
b)
Filtration of water through the soil
c)
Photosynthesis
d)
Water absorbtion
94.
According to this absorption spectrum, what color is not used by the chlorophyll pigments?
a)
green
b)
blue
c)
yellow
d)
red
95.

Photosynthesis is ...

a)

The process in which organisms convert/transfer energy from glucose to ATP.

b)

The process in which organisms exchange carbon dioxide and oxygen in their lungs.

c)

The process of taking a picture.

d)

The process of plants converting/transferring solar energy to chemical energy to make their food.

96.

The location where photosynthesis takes place is the ______________________.

a)
b)
c)
d)
97.

The word equation for photosynthesis is...

a)
b)
c)
d)
98.

Which of the following laws does the process of photosynthesis demonstrate (may choose more than one answer)

a)

The law of autotrophs

b)

The law of conservation of matter

c)

The law of conservation of energy

d)

The law of the spider verse

99.

The two reactants of photosynthesis are ...

a)

oxygen

b)

carbon dioxide

c)

glucose

d)

water

100.

The two products of photosynthesis are ...

a)

oxygen

b)

carbon dioxide

c)

water

d)

glucose

101.

The structure labeled c is a ______________ and the structure labeled d is the _______________.

a)

granum, thylakoid

b)

thylakoid, granum

c)

stroma, thylakoid

d)

thylakoid, stroma

102.

The first molecule to trap the suns energy is...

a)

ADP/ATP

b)

chlorophyll

c)

glucose

d)

NADP+/NADPH

103.

The first step of photosynthesis is called the ________________ the second step is called the ________________________.

a)

light dependent reaction, Calvin Cycle

b)

Calvin Cycle, light dependent reaction

c)

light independent reaction, Calvin Cycle

d)

Krebs cycle, Calvin Cycle

104.

The answers for a, b, and d are

a)

a. glucose b. water d. light

b)

a. ATP b. light d. oxygen

c)

a. light b. water d. oxygen

d)

a. light b. carbon dioxide d. oxygen

105.

e and f are

a)

e. ADP f. ATP

b)

e. ATP f. NADPH

c)

e. NADP+ f. NADPH

d)

e. light b. chlorophyll

106.

g and i are

a)

g. water i. glucose

b)

g. carbon dioxide i. oxygen

c)

g. ATP i. NADPH

d)

g. carbon dioxide i. glucose

107.

How can you slow or stop photosynthesis? (choose all that apply)

a)

Put it in a dark closet

b)

Give it too much light

c)

Reduce the amount of carbon dioxide

d)

Water the plant regularly

108.

True or false: Photosynthesis has a role in the carbon cycle.

a)

True

b)

False

109.

True or False: The primary source of matter used to build the plant comes from the soil.

a)

True

b)

False

110.

True or false: All organisms, not just plants, rely on the process of photosynthesis.

a)

True

b)

False

111.

Which of the following shows the balanced chemical symbol equation for photosynthesis?

a)

A

b)

B

c)

C

d)

D

112.

What is the main energy change that happens in photosynthesis?

a)

chemical --> light

b)

light --> kinetic

c)

light --> chemical

d)

kinetic --> light

113.

Where is chlorophyll found in plant cells?

a)

cytoplasm

b)

chloroplast

c)

mitochondria

d)

vacuole

114.

What substance can glucose be converted to, which is the transport carbohydrate of plants?

a)

starch

b)

cellulose

c)

sucrose

d)

amino acids

115.

What substance can glucose be converted into, which is the energy storage carbohydrate of plants?

a)

cellulose

b)

sucrose

c)

amino acids

d)

starch

116.

Which substance can glucose be converted to, which strengthens plant cell walls?

a)

starch

b)

cellulose

c)

amino acids

d)

sucrose

117.

Which of the following organelles would you not expect to be present in onion root cells?

a)

cell wall

b)

vacuole

c)

chloroplast

d)

mitochondrion

118.

Click on the picture to make it larger.


Which of the following can you conclude about point X from this graph alone?


I. light intensity limits the rate of photosynthesis

II. as light intensity increases, rate of photosynthesis increases

III. CO2 concentration limits the rate of photosynthesis

a)

I and II only

b)

I and III only

c)

II and III only

d)

I, II and III

119.

Click on the picture to make it larger.


Which of the following can you conclude about point Y from this graph?


I. light intensity does not limit the rate of photosynthesis

II. the plant has stopped photosynthesising

III. the rate of photosynthesis could be limited by a shortage of water or CO2

a)

I and II only

b)

I and III only

c)

II and III only

d)

I, II and III

120.

Click on the picture to make it larger.


What do curves C and D suggest is limiting the rate of photosynthesis?

a)

light intensity

b)

carbon dioxide concentration

c)

temperature

d)

water

121.

Click on the picture to make it larger.


What do curves B and D suggest is limiting the rate of photosynthesis?

a)

light intensity

b)

carbon dioxide concentration

c)

temperature

d)

water

122.

Supplying extra heat and carbon dioxide is more expensive, but may be worth it if the rate of photosynthesis greatly increases.


Click on the graph to make it larger.


Which of the following would it not be worth doing for a plant grower?

a)

increasing the CO2 from 0.03% to 0.1% at a temperature of 20oC.

b)

increasing the CO2 from 0.03% to 0.1% at a temperature of 25oC.

c)

increasing the temperature from 20oC to 25oC at a CO2 concentration of 0.03%

d)

increasing the temperature from 20oC to 25oC at a CO2 concentration of 0.1%

123.

Why is the chemical sodium hydrogencarbonate given to water plants in photosynthesis practicals?

a)

it is used to produce chlorophyll

b)

it allows the plant to respire

c)

it supplies the plant with CO2 gas when it dissolves

d)

it is a source of glucose

124.

Four test-tubes are set up as shown.


Click on the picture to make it larger.


Which test-tube contains the most carbon dioxide after one hour?

a)

A

b)

B

c)

C

d)

D

125.

If photosynthesizing green algae are provided with CO2 containing heavy oxygen (18O), later analysis will show that all of the following molecules produced by the algae contain 18O except

a)

glyceraldehyde 3-phosphate (G3P)

b)

glucose

c)

ribulose bisphosphate (RuBP)

d)

O2

126.

As a research scientist, you measure the amount of ATP and NADPH consumed by the Calvin cycle in 1 hour. You find 30,000 molecules of ATP consumed, but only 20,000 molecules of NADPH. Where did the extra ATP molecules come from?

a)

photosystem I

b)

photosystem II

c)

cyclic electron flow

d)

non-cyclic electron flow

127.

Suppose the interior of the thylakoids of isolated chloroplasts were made acidic and then transferred in the dark to a pH 8 solution. What would be likely to happen?

a)

The isolated chloroplasts will make ATP

b)

The Calvin cycle will be activated

c)

The isolated chloroplasts will generate oxygen gas

d)

The isolated chloroplasts will reduce NADP+ to NADPH

128.

A flask containing photosynthetic green algae and a control flask containing water with no algae are both placed under a bank of lights, which are set to cycle between 12 hours of light and 12 hours of dark. The dissolved oxygen concentrations in both flasks are monitored. Predict what the relative dissolved oxygen concentrations will be in the flask with algae compared to the control flask.

a)

The dissolved oxygen in the flask with algae will be higher in the light, but the same in the dark.

b)

The dissolved oxygen in the flask with algae will be higher in the light, but lower in the dark.

c)

The dissolved oxygen in the flask with algae will always be higher.

d)

The dissolved oxygen in the flask with algae will always be lower.

129.

The pH of the inner thylakoid space has been measured, as have the pH of the stroma and of the cytosol of a particular plant cell. Which, if any, relationship would you expect to find?

a)

The pH within the thylakoid is less than that of the stroma.

b)

The pH of the stroma is lower than that of the other two measurements.

c)

The pH of the stroma is higher than that of the thylakoid space but lower than that of the cytosol.

d)

The pH of the thylakoid space is higher than that anywhere else in the cell.

130.

What would be the expected effect on plants if the atmospheric CO2 concentration was doubled?

a)

All plants will experience increased rates of photosynthesis.

b)

C3 plants will have faster growth; C4 plants will be minimally affected.

c)

C4 plants will have faster growth; C3 plants will be minimally affected.

d)

C3 plants will have faster growth; C4 plants will have slower growth.

131.

Why are C4 plants able to photosynthesize with no apparent photorespiration?

a)

They do not participate in the Calvin cycle.

b)

They use PEP carboxylase to initially fix CO2.

c)

They conserve water more efficiently.

d)

They exclude oxygen from their tissues.

132.

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.

b)

fix CO2 into sugars in the bundle-sheath cells.

c)

fix CO2 into pyruvate in the mesophyll cells.

d)

use photosystem I and photosystem II at night.

133.

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.

134.

If the carbon atom of each of the incoming CO2 molecules is labeled with a radioactive isotope of carbon, which organic molecules will be radioactively labeled after one cycle?

a)

C only

b)

B, C, D and E

c)

C, D and E

d)

B and C only

135.

To identify the molecule that accepts CO2, Calvin and Benson manipulated the carbon-fixation cycle by either cutting off CO2 or cutting off light from cultures of photosynthetic algae. They then measured the concentrations of various metabolites immediately following the manipulation. How would these experiments help identify the CO2 acceptor? Study Figure 8.2 to help you in determining the correct answer.

a)

The CO2 acceptor concentration would decrease when either the CO2 or light is cut off.

b)

The CO2 acceptor concentration would increase when either the CO2 or light is cut off.

c)

The CO2 acceptor concentration would increase when the CO2 is cut off, but decrease when the light is cut off.

d)

The CO2 acceptor concentration would decrease when the CO2 is cut off, but increase when the light is cut off.

136.

Theodor W. Engelmann illuminated a filament of algae with light that passed through a prism, thus exposing different segments of algae to different wavelengths of light. He added aerobic bacteria and then noted in which areas the bacteria congregated. He noted that the largest groups were found in the areas illuminated by the red and blue light.


What did Engelmann conclude about the congregation of bacteria in the red and blue areas?

a)

Bacteria congregated in these areas due to an increase in the temperature of the red and blue light.

b)

Bacteria congregated in these areas because these areas had the most oxygen being released.

c)

Bacteria are attracted to red and blue light and thus these wavelengths are more reactive than other wavelengths.

d)

Bacteria congregated in these areas due to an increase in the temperature caused by an increase in photosynthesis.

137.

Theodor W. Engelmann illuminated a filament of algae with light that passed through a prism, thus exposing different segments of algae to different wavelengths of light. He added aerobic bacteria and then noted in which areas the bacteria congregated. He noted that the largest groups were found in the areas illuminated by the red and blue light.


If you ran the same experiment (mentioned above) without passing light through a prism, what would you predict?

a)

The bacteria would be relatively evenly distributed along the algal filaments.

b)

The number of bacteria present would decrease due to an increase in the carbon dioxide concentration.

c)

The number of bacteria present would increase due to an increase in the carbon dioxide concentration.

d)

The number of bacteria would decrease due to a decrease in the temperature of the water.

138.

A spaceship is designed to support animal life for a multiyear voyage to the outer planets of the solar system. Plants will be grown to provide oxygen and to recycle carbon dioxide. Because the spaceship will be too far from the sun for photosynthesis, an artificial light source will be needed.


What wavelengths of light should be used to maximize plant growth with a minimum of energy expenditure?

a)

full-spectrum white light

b)

green light

c)

a mixture of blue and red light

d)

yellow light

139.

A spaceship is designed to support animal life for a multiyear voyage to the outer planets of the solar system. Plants will be grown to provide oxygen and to recycle carbon dioxide. Because the spaceship will be too far from the sun for photosynthesis, an artificial light source will be needed.


A gardener is concerned that her greenhouse is getting too hot from too much light, and seeks to shade her plants with colored translucent plastic sheets, the color of which allows passage of only that wavelength. What color should she use to reduce overall light energy, but still maximize plant growth?

a)

green

b)

blue

c)

yellow

d)

orange

Similar Resources on Wayground

7th Grade Final Spring 2018 - SMLCS

137 questions

7th Grade Final Spring 2018 - SMLCS

quiz

Worksheet

•

6th - 12th Grade

h14 duurzaam

143 questions

h14 duurzaam

quiz

Worksheet

•

9th - 12th Grade

Physiology Final

140 questions

Physiology Final

quiz

Worksheet

•

11th - 12th Grade

photosynthesis CA

138 questions

photosynthesis CA

quiz

Worksheet

•

11th Grade - University

Honors Biology - Genetics, DNA, and Protein synthesis

138 questions

Honors Biology - Genetics, DNA, and Protein synthesis

quiz

Worksheet

•

9th - 12th Grade

Anatomy Review

140 questions

Anatomy Review

quiz

Worksheet

•

9th - 12th Grade

Bio final exam review

143 questions

Bio final exam review

quiz

Worksheet

•

9th - 12th Grade

Unit 2: Cellular Structure & Function

143 questions

Unit 2: Cellular Structure & Function

quiz

Worksheet

•

11th - 12th Grade