Metabolic and Pathways Exercise W1

Question 1

What are the 5 metabolic pathways which provide energy in Mammalian cells?

Answer 1

Glycolysis
TCA Cycle
Pentose Phosphate Pathway
Beta-Oxidation
Oxidative Phosphorylation

Question 2

What provides Biosynthetic reactions energy?

Answer 2

ATP
1 other Triphosphate
Reduced Coenzyme

Question 3

How does Glycolysis provide energy?

Answer 3

Breaks down glucose to 3 carbon compounds lactate or pyruvate

Question 4

How does TCA cycle provide energy?

Answer 4

Converts acetyl-CoA into CO2

Question 5

How does Pentose Phosphate Pathway provide energy?

Answer 5

Converts G6P into pentose phosphate and reduces NADP+ coenzyme

Question 6

How does Beta-Oxidation provide energy?

Answer 6

Converts fatty acids into acetyl-CoA and reduces coenzymes FAD+ and NAD+

Question 7

How does Oxidative Phosphorylation provide energy?

Answer 7

Oxygen is used to oxidise coenzymes which are reduced in the 4 other pathways

Question 8

What is the regulation of Gene Expression?

Answer 8

1. Signal
2. DNA
3. RNA
4. Protein