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Cellular Respiration: Energy Extraction
Test Description: This review will reinforce how much energy is released through the Krebs cycle.
Instructions: Answer all questions to get your test result.
1) As the Krebs cycle continues, the citric acid is broken down, more carbon dioxide is released, and electrons are transferred to:
A
energy recyclers
B
energy destroyers
C
energy carriers
D
energy creators
2) What type of mloecule is produced in the last step of the Krebs cycle?
A
4-carbon
B
3-carbon
C
7-carbon
D
6-carbon
3) Which molecule accepts acetyl-CoA in the first step of the Krebs cycle?
A
6-carbon
B
7-carbon
C
4-carbon
D
3-carbon
4) Which molecule is needed to start the reactions of the Krebs cycle?
A
7-carbon
B
3-carbon
C
4-carbon
D
6-carbon
5) For each of the Krebs cycle, how many ATP molecules are produced form the conversion of a ADP molecule?
A
2
B
3
C
1
D
4
6) During the process of glycolysis, 2 molecules of pyruvic acid are produced from 1 molecule of glucose. How many ATP molecules are produced from the 2 molecules of pyruvic acid?
A
2
B
1
C
4
D
3
7) When the electron carrier NAD+ accepts a pair of high-energy electrons along its way through the Krebs cycle, what is it changed into?
A
NAP+
B
NADPH+
C
NADH
D
NAPH+
8) When the electron carrier FAD accepts a pair of high-energy electrons along its way through the Krebs cycle, what is it changed into?
A
FADPH+
B
FADH2
C
FADPH2
D
FADH+
9) Another name for the Krebs cycle is the:
A
sulfuric acid cycle
B
nitric acid cycle
C
electron carrier cycle
D
citric acid cycle
10) The Krebs cycle takes place in a cell organelle called the:
A
cytoplasm
B
mitochondria
C
chloroplast
D
endoplasmic reticulum
*select an answer for all questions
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