Brainscape's Knowledge GenomeTM

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


See full index

CELS191 > Cellular Respiration > Flashcards

Cellular Respiration Flashcards

Lecture 6

1
Q

Photosynthesis occurs in..

A

plants only

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

Cellular respiration occurs

A

in plants and animals

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

ATP

A

Adenosine Triphosphate is an energy carrier

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

The cell needs energy for:

A
  • mechanical work
  • to make new materials (growth and replacement)
    -transport (of molecules across membranes)
  • to maintain order
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Mitochondria is

A

the site of cellular respiration

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

The conversion of chemical energy:

A

C6H12O6 + 6O2 —–> 6CO2 + 6H2O + Energy

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

Two important compartments for respiration are

A

Matrix and inner membrane

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

Structure of a mitochondrion 1

A

It is an organelle which is 1-1o micrometers long. There is 1-1000 per cell depending on the energy demand. It contains mitochondrial DNA and ribosomes. It produces some but not all mitochondrial proteins.

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

Structure of the mitochondrion 2

A

It has two membranes which is the inner and outer mitochondrial membranes. The mitochondrial matrix is inside the inner membrane. The inner membrane highly folded (cristae) is functionally important.

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

Overview of cellular respiration

A

Harvesting chemical energy from glucose occurs in three stages, each in a different location. Compartments of the mitochondrion are essential for cellular respiration.

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

Cellular Respiration - Stage 1: Glycolysis

A
  • Occurs in the cytosol
  • Sugar is converted into two pyruvate molecules
  • It generates 2ATP which is an energy carrier
  • Electrons are transferred to the high energy electron carrier - NAD+ making NADH
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Cellular Respiration- Stage 2: Pyruvate oxidation & Citric acid cycle

A
  • Pyruvate is converted into Acetyl CoA
  • Acetyl CoA enters the citric acid cycle
    -Output is energy carrier ATP and high energy electron carriers NADH and FADh2
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Cellular Respiration - Stage 3: Oxidative phosphorylation

A
  • Occurs in the inner membrane o the mitochondrion
  • Has two parts: electron transport (electrons from NADH and FADh2)
  • Chemiosmosis (ATP production)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Stages of Cellular Respiration

A

Stage 1- Glycolysis
Stage 2 - Pyruvate Oxidation and Citric Acid Cycle
Stage 3- Oxidative Phosphorylation

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

What are the two parts of stage 3 oxidative phosphorylation

A

In part one, a proton gradient is generated. In part two, chemiosmosis occurs.

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

What happens when a proton gradient is generated?

A
  • Protons accumulate in the intermembrane space making the proton concentration different on either side of the inner mitochondrial membrane.
17
Q

What is essential for a proton gradient to be generated

A

The compartments of the mitochondrion

18
Q

The accumulation of protons is crucial to…

A

Chemiosmosis

19
Q

Pi stands for

A

inorganic phosphate

20
Q

The inner mitochondrial membrane contains the protein complex:

A

ATP synthase

21
Q

The ATP synthase spans..

A

the membrane form the intermembrane space to the mitochondrial matrix

22
Q

The proton gradient across the inner membrane powers..

A

ATP synthesis

23
Q

ATP synthase converts

A

ADP + Pi —-> ATP

24
Q

Chemical energy is converted

A

from one form to another

24
Q

ADP

A

Adenosine Diphosphate

25
Q

The structure of the mitochondrion enables the protein gradient to..

A

be established across the inner membrane and this drives the production of ATP

26
Q

In cellular respiration, what is consumed and then produced?

A

Glucose and oxygen are consumed.
Carbon dioxide, water and ATP are produced.

27
Q

ATP powers..

A

cellular activity

28
Q

ATp enables..

A

the controlled release of energy

29
Q

The regeneration of ATp is

A

essential

30
Q

The cell continuously uses and..

A

regenerates ATP

31
Q

Explains what happens in the regeneration of ATP

A

Energy from catabolism is the input and therefore it releases energy for cellular work

CELS191 (9 decks)

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