Question 1

In the _____ reactions of photosynthesis,electron carrier molecules are reduced and ATP is synthesized.

Accepted Answer

A) light 
B) dark 
C) energetic 
D) chemical 
A) light 
B) dark 
C) energetic 
D) chemical A

Question 2

Engelmann (1883)determined the wavelengths of light that plants could use most effectively.He used a green algae and __________ to obtain his results.

Accepted Answer

A) another green algae 
B) anaerobic bacteria 
C) aerobic bacteria 
D) radioactive isotopes 
E) a mass spectrometer 
A) another green algae 
B) anaerobic bacteria 
C) aerobic bacteria 
D) radioactive isotopes 
E) a mass spectrometer C

Question 3

In green plant photosynthesis,the electron donor for the light dependent reaction is

Accepted Answer

A) carbon dioxide. 
B) oxygen. 
C) RuBP. 
D) chlorophyll II. 
E) water. 
A) carbon dioxide. 
B) oxygen. 
C) RuBP. 
D) chlorophyll II. 
E) water. E

Question 4

Light consists of units of energy called

Accepted Answer

A) electrons. 
B) photons. 
C) protons. 
D) neutrons. 
E) pigments. 
A) electrons. 
B) photons. 
C) protons. 
D) neutrons. 
E) pigments.

Question 5

Jean Baptista van Helmont performed an experiment in which he planted a small willow tree in a pot of soil,after weighing both the plant and the soil.He watered the plant regularly.At the conclusion of the experiment five years later,the weight of the tree increased by 74.4 kg,while weight of the soil decreased by 57 kg.The primary source of the increased weight (mass)of the plant is from

Accepted Answer

A) oxygen in the air. 
B) carbohydrates absorbed through the roots. 
C) the water he added. 
D) CO2 in the air. 
A) oxygen in the air. 
B) carbohydrates absorbed through the roots. 
C) the water he added. 
D) CO2 in the air.

Question 6

You are working to isolate pigments from a cyanobacteria species recovered from the ocean floor.Which of the following would you most likely expect to find?

Accepted Answer

A) chlorophyll a 
B) chlorophyll b 
C) phycobiloproteins 
D) carotenoids 
A) chlorophyll a 
B) chlorophyll b 
C) phycobiloproteins 
D) carotenoids

Question 7

Apparent color of chlorophylls.

Accepted Answer

A) green 
B) violet-blue 
C) red 
D) ultraviolet 
E) yellow-orange 
A) green 
B) violet-blue 
C) red 
D) ultraviolet 
E) yellow-orange

Question 8

Which of the following scientists is not associated with studies on photosynthesis?

Accepted Answer

A) Blackman 
B) Jan Ingenhousz 
C) Krebs 
D) Calvin 
E) Van Niel 
A) Blackman 
B) Jan Ingenhousz 
C) Krebs 
D) Calvin 
E) Van Niel

Question 9

The ______ plants utilize a specialized carbon fixation enzyme and a unique cell structure to reduce the problems of photorespiration.

Accepted Answer

A) C3 
B) C4 
C) desert 
D) arctic 
A) C3 
B) C4 
C) desert 
D) arctic

Question 10

Each pigment molecule has a characteristic ________ spectrum.

Accepted Answer

A) pigment 
B) absorption 
C) emission 
D) energy 
A) pigment 
B) absorption 
C) emission 
D) energy

Question 11

Shortest wavelength and highest-energy photons within the visible spectrum;one of the regions where chlorophylls absorb.

Accepted Answer

A) green 
B) violet-blue 
C) red 
D) ultraviolet 
E) yellow-orange 
A) green 
B) violet-blue 
C) red 
D) ultraviolet 
E) yellow-orange

Question 12

Plants and algae use a two-stage _________ in the light dependent reactions.

Accepted Answer

A) photosystem 
B) pigment 
C) emission 
D) electron 
A) photosystem 
B) pigment 
C) emission 
D) electron

Question 13

Describe the conflict between a plant's need to undergo photosynthesis and its need to conserve water when it is in short supply.Briefly state how plants overcome this problem.

Accepted Answer

A) For photosynthesis to occur,plants need to take in O2 and release CO2.Plants accomplish this task by opening and closing the stomata on their leaves.Each time the stomata are open,however,plants also lose water vapor.If water is in short supply,this loss can decrease the rate of photosynthesis.To overcome this problem,plants undergo respiration. 
B) For photosynthesis to occur,plants need to take in CO2 and release O2.Plants accomplish this task by opening and closing the stomata on their leaves.Each time the stomata are open,however,plants also lose water vapor.If water is in short supply,this loss can decrease the rate of photosynthesis.To overcome this problem,plants undergo photorespiration. 
C) For photosynthesis to occur,plants need to take in CO2 and release O2.Plants accomplish this task by opening and closing the stomata on their leaves.Each time the stomata are open,however,plants gain water.This gain can decrease the rate of photosynthesis.To overcome this problem,plants undergo transpiration. 
A) For photosynthesis to occur,plants need to take in O2 and release CO2.Plants accomplish this task by opening and closing the stomata on their leaves.Each time the stomata are open,however,plants also lose water vapor.If water is in short supply,this loss can decrease the rate of photosynthesis.To overcome this problem,plants undergo respiration. 
B) For photosynthesis to occur,plants need to take in CO2 and release O2.Plants accomplish this task by opening and closing the stomata on their leaves.Each time the stomata are open,however,plants also lose water vapor.If water is in short supply,this loss can decrease the rate of photosynthesis.To overcome this problem,plants undergo photorespiration. 
C) For photosynthesis to occur,plants need to take in CO2 and release O2.Plants accomplish this task by opening and closing the stomata on their leaves.Each time the stomata are open,however,plants gain water.This gain can decrease the rate of photosynthesis.To overcome this problem,plants undergo transpiration.

Question 14

The plant hormone abscisic acid (ABA)is involved in the regulation of photorespiration.Based on this information,ABA likely plays a role in

Accepted Answer

A) the opening and closing of stomatA. 
B) the photoelectric effect. 
C) cyclic photophosphorylation. 
D) noncyclic photophosphorylation. 
A) the opening and closing of stomatA. 
B) the photoelectric effect. 
C) cyclic photophosphorylation. 
D) noncyclic photophosphorylation.

Question 15

Carbon fixation occurs during the dark reactions,or _____________,in photosynthesis.

Accepted Answer

A) glycolysis 
B) metabolism 
C) respiration 
D) the Calvin cycle 
A) glycolysis 
B) metabolism 
C) respiration 
D) the Calvin cycle

Question 16

What products of light reactions of photosynthesis are used in the Calvin cycle?

Accepted Answer

A) oxygen and protons 
B) carbon dioxide and water 
C) ATP and NADPH 
D) ADP and NADP 
E) glucose and oxygen 
A) oxygen and protons 
B) carbon dioxide and water 
C) ATP and NADPH 
D) ADP and NADP 
E) glucose and oxygen

Question 17

CO2 is released without the production of ATP or NADPH.This process is called

Accepted Answer

A) carbon fixation. 
B) oxygen fixation. 
C) photophosphorylation. 
D) photorespiration. 
E) photooxidation. 
A) carbon fixation. 
B) oxygen fixation. 
C) photophosphorylation. 
D) photorespiration. 
E) photooxidation.

Question 18

A method devised by succulent desert plants to reduce the problem of photorespiration is

Accepted Answer

A) the C3 pathway. 
B) the CAM metabolism. 
C) the Calvin cycle. 
D) light reactions. 
E) nitrogen fixation. 
A) the C3 pathway. 
B) the CAM metabolism. 
C) the Calvin cycle. 
D) light reactions. 
E) nitrogen fixation.

Question 19

In eukaryotes,photosynthesis takes place inside the _________.

Accepted Answer

A) chloroplasts 
B) mitochondria 
C) cytoplasm 
D) Golgi apparatus 
A) chloroplasts 
B) mitochondria 
C) cytoplasm 
D) Golgi apparatus

Question 20

Which of the following statements supports the fact that chlorophyll a is not the only pigment involved in photosynthesis?

Accepted Answer

A) The rate of photosynthesis is low at wavelengths when the absorption by chlorophyll a is high. 
B) The rate of photosynthesis is high at wavelengths when the absorption by chlorophyll a is low. 
C) The rate of photosynthesis is low at wavelengths when the absorption by chlorophyll a is low. 
D) The rate of photosynthesis is high at wavelengths when the absorption by chlorophyll a is high. 
A) The rate of photosynthesis is low at wavelengths when the absorption by chlorophyll a is high. 
B) The rate of photosynthesis is high at wavelengths when the absorption by chlorophyll a is low. 
C) The rate of photosynthesis is low at wavelengths when the absorption by chlorophyll a is low. 
D) The rate of photosynthesis is high at wavelengths when the absorption by chlorophyll a is high.

Exam 8: Photosynthesis

In the _____ reactions of photosynthesis,electron carrier molecules are reduced and ATP is synthesized.

Engelmann (1883)determined the wavelengths of light that plants could use most effectively.He used a green algae and __________ to obtain his results.

In green plant photosynthesis,the electron donor for the light dependent reaction is

Light consists of units of energy called

You are working to isolate pigments from a cyanobacteria species recovered from the ocean floor.Which of the following would you most likely expect to find?

Apparent color of chlorophylls.

Which of the following scientists is not associated with studies on photosynthesis?

The ______ plants utilize a specialized carbon fixation enzyme and a unique cell structure to reduce the problems of photorespiration.

Each pigment molecule has a characteristic ________ spectrum.

Shortest wavelength and highest-energy photons within the visible spectrum;one of the regions where chlorophylls absorb.

Plants and algae use a two-stage _________ in the light dependent reactions.

Describe the conflict between a plant's need to undergo photosynthesis and its need to conserve water when it is in short supply.Briefly state how plants overcome this problem.

The plant hormone abscisic acid (ABA)is involved in the regulation of photorespiration.Based on this information,ABA likely plays a role in

Carbon fixation occurs during the dark reactions,or _____________,in photosynthesis.

What products of light reactions of photosynthesis are used in the Calvin cycle?

CO2 is released without the production of ATP or NADPH.This process is called

A method devised by succulent desert plants to reduce the problem of photorespiration is

In eukaryotes,photosynthesis takes place inside the _________.

Which of the following statements supports the fact that chlorophyll a is not the only pigment involved in photosynthesis?

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