FREE BIOLOGY AND STUDY GAMES ABOUT

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FREE BIOLOGY AND STUDY GAMES ABOUT

PHOTOSYNTHESIS EXAM QUESTIONS

Qs and Ans Expert- Explanation

This Exam contains:

-Guarantee passing score -66 Questions and Answers -format set of multiple-choice -Expert- Explanation

Question 1: What are the three parts of an ATP molecule?

Answer:

Adenine, ribose, and three phosphate groups Question 2: Where do the hydrogen ions for the photosystems of the light-dependent reactions come from?

Answer:

Water

Question 3: The major atmospheric byproduct of photosynthesis is...

Answer:

Oxygen

Question 4: What is the role of NADP+ in photosynthesis?

Answer:

Electron carrier

Question 5: Low temperatures may cause photosynthesis to occur...

Answer:

More slowly Question 6: At a hydrogen ion pump of the thylakoid membrane, energy from electrons is used to make ______.

Answer:

ATP Question 7: Photosynthesis uses sunlight to convert water and carbon dioxide into...

Answer:

Oxygen and high-energy sugars

Question 8: The Calvin cycle takes place in the...

Answer:

Stroma

Question 9: Where do the light-dependent reactions take place?

Answer:

Within the thylakoid membranes Question 10: Organisms that cannot make their own food and must obtain energy from external sources are called...

Answer:

Heterotrophs

Question 11: ATP is composed of a nitrogenous base, a sugar, and...

Answer:

Three phosphate groups

Question 12: Most of the energy used by life on Earth comes from the...

Answer:

Sun

Question 13: Describe the process of photosynthesis

Answer:

Chloroplast absorbs sunlight and stores chemical energy

Question 14: Because of photosynthesis the atmosphere is rich in what gas?

Answer:

Oxygen gas Question 15: Light energy is converted to chemical energy through the process of...

Answer:

Photosynthesis

Question 16: True or false?

Used ATP is discarded by the cell as waste.

Answer:

False

Question 17: Plants gather energy with light-absorbing molecules called...

Answer:

Pigments Question 18: If you continue to increase the intensity of the light that a plant receives, what happens?

Answer:

The rate of photosynthesis increases then levels off

Question 19: Most plants appear green because chlorophyll...

Answer:

Does not absorb green light

Question 20: True or false?

Chlorophyll is a part of an ATP molecule

Answer:

False

Question 21: Products of the light reactions of photosynthesis that are required by the dark reaction are...

Answer:

ATP and NADPH

Question 22: What is described by the following sentence?

A series of proteins located in the thylakoid membrane?

Answer:

Electron transport chain in photosynthesis

Question 23: Organisms, such as plants, that make their own food are called...

Answer:

Autotrophs

Question 24: The Calvin cycle is another name for the...

Answer:

Light-independent reactions

Question 25: Energy is released from ATP when...

Answer:

A phosphate group is removed Question 26: In the light-independent reactions of photosynthesis what enters the Calvin cycle and what is produced

Answer:

CO2 enters the Calvin cycle and sugars are made

Question 27: What happens during photosynthesis?

Answer:

Autotrophs produce carbohydrates

Question 28: Where are PSI and PSII found?

Answer:

In the thylakoid membrane