Respiration Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

What are the two types of Respiration and state the difference?

A

Aerobic Respiration (Oxygen)

Anaerobic Respiration (No Oxygen)

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

Name the 4 stages of Aerobic Respiration and where they take place

A

Glycolysis (Cytoplasm)
Link Reaction
Krebs Cycle
Oxidative Phosphorylation

(Inside Mitochondria)

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

Explain what happens during Glycolysis

A
  • Splits one molecule of glucose (6 Carbon) into 2 pyruvate molecules (3 Carbon)
  • Occurs in the Cytoplasm
  • Anaerobic process as it does not require oxygen
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What are the products of Glycolysis? Draw the diagram

A

2x ATP Molecules
2x NADH
2x Pyruvate

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

Explain what happens during Link Reaction

A
  • Converts 2 Pyruvate (3C) into Acetyl Coenzyme A (2C)
  • Occurs twice due to 2 pyruvate molecule
  • Takes place in matrix of mitochondria
  • No ATP produced
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What are the products of the Link Reaction? Draw the Diagram

A

For every glucose molecule:

  • 2x Acetyl Coenzyme A transported to the Krebs Cycle
  • 2x Carbon Dioxide Molecules are released as waste
  • 2x Reduced NAD - These go to Oxidative Phosphorylation
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Explain what happens during the Krebs Cycle

A
  • Series of oxidation-reduction reactions to produce reduced coenzymes and ATP
  • Happens in the matrix of mitochondria
  • Happens twice for every GLUCOSE molecule
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What are the products of the Krebs Cycle? Draw the Diagram

A

DENA, DENA, A, FA, NA

  • Decarboxylation of NADH
  • Decarboxylation of NADH
  • Production of ATP
  • Production of reduced FAD
  • Production of NAD

PRODUCTS:
- 1x Coenzyme A
- 1x Oxaloacetate (4C)
- 2x CO2 moleucles
- 3x NADH
- 1x FADH
- 1x ATP

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

Explain what happens during Oxidative Phosphorylation

A

Final stage of respiration

Energy carried by electrons from reduced Coenzymes (NADH & FADH) used to make ATP

Involves ETC and Chemiosmosis

Happens across inner mitochondrial membrane

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

What are the products of Oxidative Phosphorylation

A
  • High concentration of H+ in intermembrane space compared to that in matrix
  • Forms electrochemical gradient
  • Protons move down electrochemical gradient back into matrix via ATP Synthase
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Describe Anaerobic Reaction

A

Happens without presence of Oxygen.

Only small amount of ATP produced

Products differ between plants and animals

_________________________

Krebs Cycle and Oxidative Phosphorylation cannot take place without oxygen

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

In the absence of oxygen, Pyruvate can follow two pathways which are:

A
  • Alcoholic Fermentation: in plants and yeasts respiring anaerobically
  • Lactate (Lactic Acid) fermentation: in animals respiring anaerobically
How well did you know this?
1
Not at all
2
3
4
5
Perfectly