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Bioweek3Metabolism
Quiz
10
Biology
Undergraduate 1
01/22/2013

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Term
Metabolism
Definition

- refers to all the chemical reactions that occur in the body

 

- anabolic and catabolic rxn are coupled

 

- energy released fr. catabolic rxns is generally used to drive anabolic rxns for maintenance

Term
Catabolic reactions
Definition

- rxns that break down complex mol into simpler ones

- exergonic rxns bc they release energy

Term
Anabolic rxns
Definition

- rxns that combine simple mol. to form complex structures

- endergonic rxns bc they require energy

Term
Cellular respiration
Definition

- nutrients contain chemical energy

- ATP is the energy currency of the cell

 

- breakdown of glucose w/in cells, w/the accompanying synthesis of ATP

 

- a metabolic pathway that converts this chemical energy in food into a form that can be used in the body - namely ATP

 

- regenerates ATP

Term
ATP
Definition

- adenosine triphosphate

- energy currency

- ADP + P + energy <=> ATP

Term
Uses of energy in the cell
Definition

- metabolism

- cell division

- growth

- movement

- action potentials

Term
Redox reactions
Definition

Oxidation: removal of e-, resulting in a decrease in energy of the mol.

 

Reduction: gain in e-, resulting in an increase in energy of the mol.

 

Whenever one substance is oxidized, another substance is reduced

Term
Stages of glucose catabolism
Definition

1. glycolysis

 

2. formation of acetyl coenzyme A

 

3. Krebs cycle

 

4. Electron transport chain

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