<span>s that a single on off switch can control the whole cluster of functionally related genes; these genes are coordinately controlled (ex: when Ecoli must make tryptophan for itself because the nutrient medium lacks this amino acid all the enzymes for the metabolic pathway are synthesized at one time)</span>
Answer:
DBCA
Explanation:
Here is the normal order of events:
Order 1.
d. Activation of adenylyl cyclase
Order 2
b. Binding of cAMP to PKA
Order 3
c. Dissociation of PKA into catalytic and regulatory subunits
Order 4
a. binding of CREB to PKA ... 4
The Option C is correct.
- C) A reaction rate can be increased when the specific enzyme for a biological reaction is present.
By increasing the enzyme concentration, the maximum reaction rate greatly increases.
Conclusions:
The rate of a chemical reaction increases as the substrate concentration increases. Enzymes can greatly speed up the rate of a reaction. However, enzymes become saturated when the substrate concentration is high.
