WorksheetsKrebs' Cycle
Total questions: 15
Worksheet time: 14mins
Name
Class
Date
1.
The "regenerator" of the Krebs Cycle is:
a)
Oxaloacetate
b)
Acetyl-CoA
c)
Citrate
d)
α-Ketoglutarate
2.
Before entering Krebs Cycle, pyruvate is:
a)
Oxidized
b)
Reduced
c)
Isomerized to Acetyl-CoA
d)
Phosphorylated
3.
The number of ATP molecules produced out of Krebs Cycle is:
a)
2
b)
3
c)
4
d)
0
4.
How many FADH2 molecules are produced by 1 molecule of glucose?
a)
1
b)
2
c)
3
d)
4
5.
How many FADH2 molecules are produced by 1 turn of the Krebs Cycle?
a)
1
b)
2
c)
3
d)
4
6.
How many NADH molecules are produced by a molecule of glucose through the Krebs' Cycle?
a)
2
b)
3
c)
4
d)
6
7.
Which of the following is not a requirement for the Krebs Cycle?
a)
NAD+
b)
FAD+
c)
Water
d)
Pyruvate
8.
How many CO2 molecules are produced by the Krebs Cycle for a molecule of glucose?
a)
2
b)
4
c)
6
d)
3
9.
After Krebs Cycle, how many Carbon atoms from the original glucose molecule remain?
a)
0
b)
1
c)
3
d)
2
10.
Krebs Cycle takes place in the:
a)
Cytoplasm
b)
Matrix
c)
Ribsome
d)
InterMembrane Space
11.
Folds in the mitochondrion are called:
a)
Cristae
b)
Matrix
c)
Golgi Bodies
d)
Carbuncles
12.
The inner most interior of the mitochondrion is called the:
a)
Cristae
b)
Matrix
c)
Golgi Bodies
d)
Carbuncles
13.
Krebs Cycle is part of_______________ respiration.
a)
Aerobic
b)
Anaerobic
14.
Prior to entering the Krebs Cycle, each pyruvate molecule loses electrons, hydrogen ions, and a carbon, forming an energy-rich molecule of
a)
Acetyl-CoA
b)
Citrate
c)
Oxaloacetate
d)
Malate
15.
After the Krebs Cycle only a small portion of the energy of glucose has been converted to ATP. At this point the majority of usable energy is contained in
a)
NADH and FADH2
b)
Carbon Dioxide
c)
Acetyl-CoA
d)
Citrate
100 %
