BIOSCI 101 Final Questions

Question 1

What does Amphibolic Mean?

Answer 1

Uses both anabolic and catabolic processes.

Question 2

What is Anabolism?

Answer 2

Plants synthesising molecules through photosynthesis.

Question 3

What is Catabolism?

Answer 3

Organic molecules and oxygen producing ATP.

Question 4

Where would we find Brown Fat?

Answer 4

Mammals in cold climates.

Question 5

What is Basal Metabolic Rate?

Answer 5

Energy expenditure at rest.

Question 6

What can Gibb’s Free Energy be used for?

Answer 6

To predict max change in concentrations between reactants and products.

Question 7

What Inhibits PFK?

Answer 7

High ATP and low pH.

Question 8

What Activates PFK?

Answer 8

AMP.

Question 9

What is the Cori Cycle?

Answer 9

Lactate is converted back to pyruvate, then into glucose.

Question 10

What does each Glucose Produce in CAC?

Answer 10

2ATP, 4CO2, 6NADH, 2 FADH2.

Question 11

What is Leigh’s Disease?

Answer 11

Mutation in C-ring of ATP synthase, proton slippage, brain disorder.

Question 12

How much ATP does the Shuttles Produce?

Answer 12

Malate Aspartate - 2.5 ATP

G3PDH - 1.5 ATP

Question 13

Why is ATP Number not Exact?

Answer 13

Membranes leak when hot, NADH from glycolysis has two fates.

Question 14

How is Pyruvate Kinase Reversed in Glycolysis?

Answer 14

PEPCK and pyruvate carboxylase using 2 ATP and NADH.

Question 15

How is PFK Reversed in Glycolysis?

Answer 15

F1,6BP

Question 16

How is Hexokinase Reversed in Glycolysis?

Answer 16

G5P.

Question 17

What is a Normal vs Diabetic BGL?

Answer 17

Normal - 4.5-5mM

Diabetic - >11mM

Question 18

How Long does it take for the Fuel of the Brain to Switch from Glucose to Ketone Bodies?

Answer 18

8 days.

Question 19

What is Creatine Phosphate Useful for?

Answer 19

Sustained power - 15 seconds.

Question 20

Which Gradients do Mitochondria use?

Answer 20

Both proton and electrical gradient.

Question 21

Which Gradient do Chloroplasts use?

Answer 21

Proton gradient only - more dependant on pH.

Question 22

How does Photosystem 2 Harvest Light?

Answer 22

Light hits PS2, electron jumps up, transferred to Q, goes to cytochrome complex, oxidises Q through Q cycle.

Question 23

How does Photosystem 1 Harvest Light?

Answer 23

Light hits PS1, electron jumps up, 2 fates; electrons can move down string, NAD can be reduced to NADH.