Self-Test 103 SELF-TEST Enzymes and the study of enzyme reaction rates (enzyme k

Question

Self-Test 103 SELF-TEST Enzymes and the study of enzyme reaction rates (enzyme kinetics) are among the ficult areas of biochemistry for students to assimilate. Consequently, more been included in this chapter's Self-Test. If you work through these problems understanding of this material will be greatly enhanced. However, these problems be beneficial if you work through them to completion without looking at the most dif- have carefully, your will only answers Do You Know the Terms? CROSS number. At saturating The slowest reaction in a sequence is the State of a system in which no further net change is The assumption that the rate of formation of ES is ex- 19. k,a, is known as the 1. Type of intubitor that alters the Km of an enzyme with- 15. . 2. -step out altering Va Molecule that binds to the active site of an enzyme. Relatively small portion of an enzym substrate binding. (2 words) 7. 17. e that is involved in actly equal to the rate of breakdown of ES is called the assumption. (2 words)

Explanation / Answer

Did you know the facts:
1.

Prosthetic groups: Non-amino acid components of an enzyme
Active form of enzyme = Holoenzyme
Inactive form without Prosthetic groups = Apoenzyme

2.
No.
The first enzymes to be evolved are RNAs.
Self-catalytic RNAs mediate their own splicing.
However, they are limited in number.
Most of the enzymes in nature are proteins.

3.
1. They decrease the activation energy for the reaction to occur
2. They increase the effective concentrations of substrates by bringing them closer
3. They increase the reaction rate.

Down
1. Allosteric enzyme

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