Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

IMMS phase 1 > Biochemistry > Flashcards

Biochemistry Flashcards

1
Q

What are the products of glycolysis?

A

2 ATP, 2 NADH, 2 Pyruvate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the rate limiting enzyme in glycolysis?

A

Phosphofructokinase-1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Where in a cell does glycolysis take place?

A

Cytoplasm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Where in a cell does the Krebs cycle take place?

A

Mitochondrial matrix

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Name 4 ways in which ATP can be produced?

A
  • Krebs cycle.
  • Glycolysis.
  • Oxidative phosphorylation.
  • Substrate level phosphorylation.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What enzyme of glycolysis is inhibited in acidosis?

A

Phosphofructosekinase-1 (PFK-1 is pH dependent).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What enzyme catalyses the formation of 3-phosphoglycerate from 1,3-bisphosphoglycerate?

A

Phosphoglyceratekinase.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What enzyme catalyses the formation of glyceraldehyde-3-phosphate from dihydroxyacetone phosphate?

A

Triose phosphate isomerase.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Oxidative phosphorylation: What enzyme transports protons into the mitochondrial matrix?

A

ATP synthase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Is the mitochondrial membrane permeable or impermeable to ions?

A

Impermeable

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What are steroid hormones synthesised from?

A

Cholesterol

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Name 2 electron accepting coenzymes.

A
  1. NAD
  2. FAD
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Approximately how many ATP molecules are produced from oxidation of NADH?

A

2.5

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Approximately how many ATP molecules are produced from oxidation of FADH2?

A

1.5

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Briefly describe what happens in anaerobic respiration.

A

NAD is regenerated from NADH. Pyruvate, from glycolysis, forms lactate. Lactate dehydrogenase catalyses this reaction. NAD goes back to glycolysis so ATP can be produced.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What enzymes regulate the Krebs cycle?

A
  1. Pyruvate dehydrogenase.
  2. Citrate synthase.
  3. Isocitrate dehydrogenase.
  4. α-ketoglutarate dehydrogenase.
17
Q

Where does oxidative phosphorylation occur?

A

Mitrochondrial matrix

18
Q

What is the final electron acceptor?

A

Oxygen

19
Q

Describe the move of electrons in the electron transport chain?

A

Components of ETC accept electrons (reduced) and pass them along (oxidised)

20
Q

What is normal blood glucose?

A

4.5 - 5.5 mmol/L

21
Q

How is blood glucose maintained?

A

Through the action of anabolic and catabolic hormones.

22
Q

What is the fate of pyruvate in anaerobic conditions?

A

Lactate formation catalysed by lactate dehydrogenase

RegenerationonNAD+

23
Q

What regulates PFK?

A

ATP (inhibitor)
AMP (activator)
Citrate (inhibitor)
Fructose 2, 6 biphosphate (activator)

IMMS phase 1 (9 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions