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21 Cards in this Set

  • Front
  • Back

Define aerobic Respiration

Organic molecules are decomposed in the presence of oxygen.

Define anaerobic respiration

respiration occurring without the presence of oxygen

Define cellular respiration

The conversion of stored energy in complex organic molecules to ATP

Is aerobic catabolic or anabolic?

Catabolic

Cellular respiration is a controlled stepwise ___________ of organic molecules in a cell. It is controlled by _______.

Oxidation


enzymes

The free energy prodeuced during oxidation is used to drive what?

the synthesis of ATP

The transfer of electrons during oxidation is known as....

oxidation-reduction reactions or redox reactions

Define oxidation and reduction

Oxidation - loss of electrons


Reduction - gain of electrons

In general molecules rich in hydrogen are excellent _____.

Fuels

What are the three stages in aerobic respiration?

Glycolysis


Citric acid cycle (Kreb's cycle)


Electron Transport

Where does glycolysis occur?

In the cytosol

What are the inputs during glycolysis?

C6H12O6 --> one molecule of glucose

What are the outputs of glycolysis?

4 ATP


2 NADH


2 pyruvate


2 H2O

What are the conditions for the Kreb's cycle to proceed?

Oxygen must be present.


Pyruvate transported into mitochondria where oxidation is completed

Where does Krebs cycle proceed in prokaryotes?

In the cytosol s

What are the inputs of the citric acid cycle?

2 acetyl groups ( -COCH3)

For every acetyl, what are the outputs?

2 CO2 and 1 ATP

For every acetyl, what is reduced?

3 NAD and 1 FAD

How many ATP are produced at the end of cellular respiration?

38

How is ATP produced during fermentation?

By glycolytic pathways using substrate level phosphorylation

What is the consequence of using fermentation to produce ATP?

The efficiency of ATP synthesis and substrate utilization is greatly reduced