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Grade 12 Biology
Unit 2: Metabolic Processes
Quiz: Glycolysis
Name:______________________________
Date:_______________________________
Part A: Multiple Choice (circle the correct answer)
1. How many net ATP are produced by Glycolysis alone per glucose?
a) 2
b) 4
c) 12
d) 8
2. Which one of the following is the 2nd molecule in the Glycolysis pathway?
a) Glucose – 6 – phosphate
b) Fructose – 6 phosphate
c) Fructose - 1 ,6 biphosphate
d) Glucose
3. Which one of the following is a reduced electron carrier that carries electrons to the ETC?
a) GDP
b) NADH+H+
c) NAD
d) ADP
4. What are the names of both 3 carbon molecules that result when glucose is broken down?
a) Glyceraldehyde – 3 – phosphate, 1,3 – biphosphate
b) Glyceraldehyde – 3 – phosphate, dihydroxy – acetone phosphate
c) Glyceraldehyde – 3 – phosphate, fructose – 1 ,6 biphosphate
d) Dihydroxy – acetone phosphate, fructose – 1,6 biphosphate
5. What happens to the two carbons from acetyl – COA entering the Krebs cycle?
a) Expelled as a gas
b) Recycled in oxaloacetate
c) Released as ethanol
d) Converted into pyruvate
6. What is the name of the final product in Glycolysis?
a) ATP
b) NADH + H+
c) PEP
d) Pyruvate
7. What is the net result for NADH + H+ after both pyruvate molecules from Glycolysis have
completed the Krebs cycle?
a) 4
b) 6
c) 2
d) 3
8. The transformation of isocitrate into alpha – ketoglutarate requires the use of two kinds of
enzymes:
a) Isomerase and dehydrogenase
b) Dehydrogenase and decarboxylase
c) Hydrase and phosphorylase
d) Decarboxylase and phosphorylase
Grade 12 Biology
Unit 2: Metabolic Processes
Quiz: Glycolysis
9. What two molecules create Acetyl CoA?
a) Pyruvate + Coenzyme A
b) H20 + Coenzyme A
c) Pyruvate + H20
d) Coenzyme A + 0xygen
Name:______________________________
Date:_______________________________
10. Where does the Krebs cycle occur in the cell?
a) Cytoplasm
b) Matrix
c) Cristae membrane
d) Stroma
11. At the end of Glycolysis, the original glucose molecule has been broken down into
_____________________ molecules.
a) 2 glyceraldehyde – 3 - phosphate
b) 3 pyruvate
c) 2 phosphoenol pyruvate
d) 2 pyruvate
12. The transformation of fumarate into malate requires the use of one enzyme:
a) Dehydrogenase
b) Phosphorylase
c) Isomerase
d) Hydrase
13. Approximately how much energy is in a glucose? The equivalent to…
a) 90 ATP
b) Glucose has no energy
c) 31 ATP
d) 2 ATP
14. Where in the cell does Glycolysis occur?
a) Cytoplasm
b) Matrix
c) Cristae membrane
d) Stroma
15. 1,3 - biphosphoglycerate readily gives up a phosphate group to _______ forming ___________.
This results in a molecule of ______________________.
a) ATP,ADP, 3 phosphoglycerate
b) GDP, GTP, 2 phosphoglycerate
c) NAD+, NADH +H+, 3 phosphoglycerate
d) ADP, ATP, 3 phosphoglycerate
Grade 12 Biology
Unit 2: Metabolic Processes
Quiz: Glycolysis
Part B: Short Answer
Name:______________________________
Date:_______________________________
16. Place the correct molecule at EACH end of all the side arrows and place the correct name of the
enzyme that completes the process. [Hint. Compare the molecule before and after to see what
has changed.](10 marks)
COOH
HC—O—P
HOCH2
O=C--O—P
HOCH
H2C—O—P
HC=0
HCOH
H2C—O—P
COOH
C—O—P
II
CH2
COOH
HOC
H2C—O—P
O=C—O—P
HOCH
H2C—O—P
17. Carefully, compare the two molecules below and show what changes must occur in the equation
for this step in Kreb’s cycle by i) adding the appropriate substances that are added and/or
removed, ii) naming the enzymes that must be used iii) naming the original and final molecules
(10 Marks)