In order to reuse an enzyme after the conclusion of an enzyme-catalyzed reaction, what must occur?
A. The enzyme has to be resynthesized.
B. The enzyme must change into an active form
C. The enzyme has to decrease entropy.
D. The enzyme has to separate itself from the product.
Answer: D
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In some circumstances, when two different carbon sources are available, growth will occur first using one carbon source, then after a short lag period, growth will resume using the second carbon source. This process is called ________ growth.
A. diauxic B. bimorphic C. alternating D. dimorphic
Sorting of hormones into regulated secretory vesicles in the trans-Golgi network involves
A) mannose-6-phosphorylation. B) formation of large aggregates. C) a KDEL receptor. D) a zymogen granule receptor. E) O-linked glycosylation
Scientists can fill in gaps in defining species by DNA sequence analysis.
a. true b. false
Which of the following are ways resistance can be acquired by microorganisms?
A) Successful gene mutation B) Acquisition of genes from other organisms via gene transfer mechanisms C) A combination of mutational and gene transfer events D) All of the above