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Chapter 8

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Biology Test #5

Biology Test #5

Question 1 of 25

1

Which of the following affects the rate of photosynthesis?

Select one of the following:

  • light intensity

  • water

  • temperature

  • all of the above

Explanation

Question 2 of 25

1

What are the products of the light-dependent reactions?

Select one of the following:

  • oxygen gas

  • ATP

  • NADPH

  • all of the above

Explanation

Question 3 of 25

1

In the light reactions of photosynthesis, which is the molecule complex that energizes electrons just before going to the Calvin cycle?

Select one of the following:

  • photosystem 2

  • ATP synthase

  • electron transport chain

  • photosystem 1

Explanation

Question 4 of 25

1

Ingenhousz showed that plants produce oxygen bubbles when exposed to

Select one of the following:

  • ATP

  • carbon dioxide

  • a burning candle

  • light

Explanation

Question 5 of 25

1

What is a product of the Calvin cycle?

Select one of the following:

  • glucose

  • oxygen gas

  • carbon dioxide

  • ATP

Explanation

Question 6 of 25

1

Plants gather the sun's energy with light-absorbing molecules called

Select one of the following:

  • glucose

  • pigments

  • thylakoids

  • chloroplasts

Explanation

Question 7 of 25

1

The Calvin cycle takes place in the

Select one of the following:

  • photosystems

  • stroma

  • thylakoid membranes

  • chlorophyll molecules

Explanation

Question 8 of 25

1

Jan van Helmont concluded that plants gain most of their mass from

Select one of the following:

  • the soil

  • oxygen in the air

  • carbon dioxide in the air

  • water

Explanation

Question 9 of 25

1

How does carbon dioxide get into the plant?

Select one of the following:

  • thylakoids

  • stomata (stomates)

  • roots

  • osmosis

Explanation

Question 10 of 25

1

What is the name of the enzyme that combines CO2 with a 5-carbon molecule to begin the Calvin cycle?

Select one of the following:

  • ATP synthase

  • Rubisco

  • Polycalvinase

  • Deoxyribonase

Explanation

Question 11 of 25

1

What is the 5-carbon molecule in the Calvin Cycle that joins with the incoming CO2?

Select one of the following:

  • ribose

  • AUG

  • deoxyribose

  • RuBP

Explanation

Question 12 of 25

1

If carbon dioxide is removed from a plant's environment, what would you expect to happen to its production of high-energy sugars?

Select one of the following:

  • No sugars will be produced.

  • The same number of sugars will be produced but without carbon dioxide.

  • More sugars will be produced.

  • Carbon dioxide does not affect the production of high-energy sugars in plants.

Explanation

Question 13 of 25

1

The Calvin cycle is another name for

Select one of the following:

  • light-independent reactions

  • photosynthesis

  • light-dependent reactions

  • all of the above

Explanation

Question 14 of 25

1

Which of the following is an autotroph?

Select one of the following:

  • tree

  • monkey

  • dog

  • mushroom

Explanation

Question 15 of 25

1

What term describes the chemical reaction that ADDs electrons to a molecule?

Select one of the following:

  • reduction

  • transformation

  • chargification

  • oxidation

Explanation

Question 16 of 25

1

Most plants appear green because chlorophyll

Select one of the following:

  • absorbs green light

  • does not absorb green light

  • does not absorb violet light

  • does not absorb red light

Explanation

Question 17 of 25

1

A granum is a(an)

Select one of the following:

  • photosynthetic pigment molecule

  • membrane enclosing a thylakoid

  • stack of chloroplasts

  • stack of thylakoids

Explanation

Question 18 of 25

1

According to your reading, if you continue to increase the intensity of light that a plant receives, what happens?

Select one of the following:

  • The rate of photosynthesis increases and then levels off.

  • The rate of photosynthesis does not change.

  • The rate of photosynthesis increases with light intensity.

  • The rate of photosynthesis decreases with light intensity.

Explanation

Question 19 of 25

1

Energy is released from ATP when

Select one of the following:

  • ATP is exposed to sunlight

  • a phosphate group is removed

  • a phosphate group is added

  • adenine bonds to ribose

Explanation

Question 20 of 25

1

Which of the following is NOT a part of an ATP molecule?

Select one of the following:

  • phosphate

  • adenine

  • chlorophyll

  • ribose

Explanation

Question 21 of 25

1

The light-collecting units of a chloroplast are the

Select one of the following:

  • stroma

  • electron carriers

  • high-energy sugars

  • photosystems

Explanation

Question 22 of 25

1

Which step is the beginning of photosynthesis?

Select one of the following:

  • HIgh-energy electrons move through the electron transport chain

  • Pigments in photosystem I absorb light

  • Pigments in photosystem II absorb light

  • ATP synthase allows H+ ions to pass through the thylakoid membrane

Explanation

Question 23 of 25

1

The stroma is the space that surrounds

Select one of the following:

  • thylakoids

  • plant cells

  • chloroplasts

  • all of the above

Explanation

Question 24 of 25

1

Which scientists showed that plants need light to produce oxygen?

Select one of the following:

  • Priestley and Calvin

  • Priestley and Ingenhousz

  • van Helmont and Calvin

  • van Helmont and Priestley

Explanation

Question 25 of 25

1

Which of the following is NOT required for photosynthesis to occur?

Select one of the following:

  • water

  • carbon dioxide

  • oxygen

  • light

Explanation

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