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WorksheetsKrebs 2022
Total questions: 13
Worksheet time: 20mins
How many times does the Krebs cycle happen per glucose molecule?
1
2
3
4
Where does the Krebs cycle take place?
Mitochondrial matrix
Mitochondrial cristae
Cytosol
Chloroplast
Predict the effect of an inhibitor that stops the oxidation of NADH or FADH2.
Increase of cellular respiration; more ATP is synthesized
Decrease of cellular respiration; more ATP is synthesized
Increase of cellular respiration; less ATP is synthesized
Decrease of cellular respiration; less ATP is synthesized
For the two pyruvates that enter from glycolysis, the Krebs cycles will yield:
1 ATP, 2 NADH, and 1 FADH2
1 ATP, 2 NADH, and 2 FADH2
1 ATP, 3 NADH, and 1 FADH2
2 ATP, 8 NADH, and 2 FADH2
2 ATP, 4 NADH, and 2 FADH2
The initial reaction of the Krebs cycle produces:
Glucose and pyruvate
H2O and CO2
CO2, acetyl-CoA, and NADH
Coenzyme A and NADH
The waste product produced during the Krebs cycle is...
Oxygen
Water
Carbon Dioxide
ATP
Substrate-level phosphorylation is a metabolic reaction that results in the formation of ATP by the direct transfer of a phosphate group to ADP from another phosphorylatedcompound via an enzyme.
TRUE
FALSE
The number of ATP molecules produced out of Krebs Cycle for 1 molecule of glucose is:
3
2
6
4
This reaction involves:
decorboxylation
A REDOX reaction
the removal of CO2
All occur
In this reaction
NAD is being oxidized
isocitrate is being reduced
isocitrate is being oxidized
alpha ketogluterate is being reduced
The conversion of pyruvate to acetyl takes place:
in the cytoplasm
on the inner membrane of the mitochondria
in the matrix of the mitochondria
In the intermembrane space of the mitochondria
The main purpose of the Kreb Cycle is to:
produce CO2
Produce H2O
Produce NADH and FADH
Take in O2
WHich of these is not a product of Krebs
H2O
CO2
NADH
ATP
