Bio 210 - Exam 2 - Biochemical Pathways

Front 1

Biochemical Pathways definition

Back 1

a series of biochemical reactions that are linked together

A<------>B<------>C<------>D<------>E

Front 2

3 Characteristics of control mechanisms for biochemical pathways

Back 2

1. Must control the rate of enzyme catalyzed reactions
2. Should prevent waste of energy and materials
3. Must function efficiently and without interruption

Front 3

Allosteric Enzyme definition

Back 3

enzyme usually composed of 2 or more polypeptide chains (subunits) that exist in two shapes:
Active and Inactive;

May have multiple allosteric sites

Front 4

2 Chemicals that affect allosteric enzyme activity

Back 4

Activator (+ modulator and effector): chemical that stabilizes an allosteric enzyme in its active form


Inhibitor (- modulator and effector): chemical that stabilizes an allosteric enzyme in its inactive form.

Front 5

The binding between and activator or inhibitor and its allosteric enzyme is usually irreversible or reversible?

Back 5

reversible

Front 6

Feedback control is usually negative or positive?

Back 6

it can be either

Front 7

Feedback inhibition

Back 7

the endproduct of a biochemical pathway inhibits the activity of one enzyme in the pathway