Unit 4 Target 1: ATP Quiz
Questions and Answers
- 1.
What trait of an ATP molecule enables it to store energy for use by cells?
- A.
Its small size
- B.
Its solubility in water
- C.
Its ability to form hydrogen bonds
- D.
Its phosphate-phosphate bond
Correct Answer
D. Its phosphate-phosphate bondExplanation
The phosphate-phosphate bond in an ATP molecule enables it to store energy for use by cells. When this bond is broken, energy is released, which can be used for various cellular processes. This bond is high in energy due to the repulsion between the negatively charged phosphate groups. The breaking of this bond results in the formation of ADP and inorganic phosphate, releasing energy that can be used by the cell.Rate this question:
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- 2.
Energy is released when the bond between
- A.
Carbon atoms in ATP is broken.
- B.
Ribose and adenine in ATP is broken.
- C.
Phosphate groups in ATP is broken.
- D.
Two ATP molecules is broken.
Correct Answer
C. Phosphate groups in ATP is broken.Explanation
When the bond between the phosphate groups in ATP is broken, energy is released. This is because ATP (adenosine triphosphate) is a molecule that stores energy in its phosphate bonds. When one of these phosphate bonds is broken, a phosphate group is released, and a molecule of ADP (adenosine diphosphate) is formed. This process releases energy that can be used by cells for various metabolic reactions.Rate this question:
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- 3.
What are the three parts of an ATP molecule?
- A.
Adenine, thylakoids, stroma
- B.
Stroma, grana, chlorophyll
- C.
Adenine, ribose, phosphate groups
- D.
NADH, NADPH, and FADH2
Correct Answer
C. Adenine, ribose, phosphate groupsExplanation
The three parts of an ATP molecule are adenine, ribose, and phosphate groups. Adenine is a nitrogenous base, ribose is a five-carbon sugar, and phosphate groups are responsible for storing and releasing energy. Together, these three components make up adenosine triphosphate (ATP), which is the primary energy currency of cells.Rate this question:
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- 4.
Which of the following is NOT a part of an ATP molecule?
- A.
Adenine
- B.
Ribose
- C.
Chlorophyll
- D.
Phosphate
Correct Answer
C. ChlorophyllExplanation
Chlorophyll is not a part of an ATP molecule. ATP (adenosine triphosphate) is composed of three main components: adenine (a nitrogenous base), ribose (a sugar), and phosphate groups. Chlorophyll, on the other hand, is a pigment found in plants and algae that is responsible for capturing light energy during photosynthesis. It is not involved in the structure or function of ATP.Rate this question:
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- 5.
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.
Correct Answer
D. A phosphate group is removed.Explanation
When a phosphate group is removed from ATP, energy is released. ATP (adenosine triphosphate) is a molecule that stores and transports energy in cells. It consists of three phosphate groups bonded to adenosine. When a phosphate group is removed, ATP is converted into ADP (adenosine diphosphate), releasing energy that can be used for various cellular processes. This process is known as ATP hydrolysis and is essential for powering cellular activities.Rate this question:
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- 6.
Which of the following is NOT a true statement about ATP?
- A.
ATP consists of ribose, adenine, and phosphate.
- B.
ADP forms when ATP releases energy.
- C.
ATP provides energy for the mechanical functions of cells.
- D.
Used ATP is discarded by the cell as waste.
Correct Answer
D. Used ATP is discarded by the cell as waste.Explanation
ATP is not discarded by the cell as waste. Instead, when ATP releases energy and becomes ADP, it can be recycled back into ATP through the process of cellular respiration. This recycling process allows the cell to reuse the ADP and conserve energy.Rate this question:
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- 7.
Look at the above figure. All of the following are parts of an ADP molecule EXCEPT
- A.
Structure A.
- B.
Structure B.
- C.
Structure C.
- D.
Structure D.
Correct Answer
D. Structure D.Explanation
The question is asking which structure is not a part of an ADP molecule. ADP (adenosine diphosphate) is a molecule composed of adenine, ribose, and two phosphate groups. By looking at the figure, we can see that structures A, B, and C are all present in an ADP molecule. However, structure D is not shown in the figure, indicating that it is not a part of an ADP molecule.Rate this question:
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- 8.
Which structures shown in the above figure make up an ATP molecule?
- A.
A and B
- B.
A, B, and C
- C.
A, B, C, and D
- D.
C and D
Correct Answer
C. A, B, C, and DExplanation
The correct answer is A, B, C, and D. This means that all of the structures shown in the figure make up an ATP molecule.Rate this question:
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- 9.
In the figure above, between which parts of the molecule must the bonds be broken to form an ADP molecule?
- A.
A and B
- B.
B and C
- C.
C and D
- D.
All of the answers are correct
Correct Answer
C. C and DExplanation
In order to form an ADP molecule, the bonds between parts C and D of the molecule must be broken. This is because ADP (adenosine diphosphate) is formed by the removal of a phosphate group from ATP (adenosine triphosphate), which is represented by the molecule in the figure. The phosphate group that is removed is located between parts C and D.Rate this question:
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Sep 02, 2023Quiz Edited by
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Sep 24, 2014Quiz Created by
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