WorksheetsKrebs cycle (PAL)
Total questions: 10
Worksheet time: 5mins
Which of the following steps in the Krebs cycle directly produces a molecule of ATP?
Citrate - Isocitrate
Isocitrate - α-ketoglutarate
succinyl CoA - succinate
succinate - fumarate
How many molecules of acetyl CoA attached to coenzyme A are produced from a single molecule of glucose in Krebs cycle?
1
2
3
4
How are electrons extracted from the citric acid cycle for use in the electron transport chain?
Reduction of ATP and GTP
Reduction of NAD+ and FAD
Oxidation of NAD+ and FAD
Oxidation of ATP and GTP
Relative to FADH2, at what energy state does NADH enter the electron transport chain?
NADH enters electron transport chain at a lower energy state than FADH2
NADH enters electron transport chain at a higher energy state than FADH2
Energy state for NADH enters electron transport chain cannot be predicted
NADH enters electron transport chain at the same energy state as FADH2
In Krebs cycle, malate and NAD+ come together to from oxaloacetate. What is the chemical reaction?
Hydration
Decarboxylation
Dehydration
Oxidation
During cellular respiration, where is NADH produced?
The mitochondrial intermembrane space
The cytosol and mitochondrial matrix
The cytosol
The endoplasmic reticulum
In Krebs cycle, if 12 molecules of NADH are produced over a period of time, how many FADH2 are produced?
2
24
4
12
Oxygen is directly required for citric acid cycle to occur
True
False
Krebs cycle is part of ____ respiration.
Anaerobic
Aerobic
Before entering the Krebs cycle, pyruvate is
Oxidized
Reduced
Isomerized to Acetyl-CoA
Phosphorylated
