Biology: The Dynamics of Life, North Carolina Edition

Chapter 9: Energy in a Cell

Energy In a Cell

1
Cells store energy when _____.
A)a third phosphate group is bonded to an ATP molecule
B)the third phosphate group breaks off from an ATP molecule
C)ions are released into the bloodstream
D)they break down sucrose to glucose and fructose
2
Energy is released from ATP when the bond is broken between _____.
A)adenine and ribose
B)ribose and a phosphate group
C)two phosphate groups
D)adenine and a phosphate group
3
Organisms need a way of storing energy because _____.
A)a cell cannot create energy and must get it from elsewhere in the organism
B)a cell can release only stored energy
C)a cell can't always immediately use all the energy it gets
D)an organism often has times when no energy is used
4
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What is the main purpose of the cycle shown in Figure 9-4?
A)destruction of CO<sub>2</sub>
B)production of ADP
C)production of NADP-
D)sugar production
5
Which of the following is <u>not</u> a part of adenosine diphosphate?
A)adenine
B)two phosphate groups
C)glucose
D)ribose
6
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Which of the diagrams in Figure 9-2 best show how energy is produced in a cell?
A)D
B)C
C)B
D)A
7
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In which types of organisms does the process shown in Figure 9-5 take place?
A)neither plants nor animals
B)both plants and animals
C)animals only
D)plants only
8
In the complete process of photosynthesis, the _____.
A)light reactions produce NADP<sup>+</sup> from NADPH + H<sup>+</sup>
B)Calvin cycle breaks down H<sub>2</sub>O
C)light reactions release oxygen
D)Calvin cycle yields CO<sub>2</sub>
9
The main energy-trapping molecule in plants is _____.
A)carotenoids
B)chlorophyll
C)chloroplast
D)stroma
10
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Which of the processes shown in Figure 9-3 do not use a cell’s energy?
A)D
B)C
C)A
D)B
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