The tryptophan operon is a repressible operon that is
A) permanently turned on.
B) turned on only when tryptophan is present in the growth medium.
C) turned off only when glucose is present in the growth medium.
D) turned on only when glucose is present in the growth medium.
E) turned off whenever tryptophan is added to the growth medium.
Ans: E) turned off whenever tryptophan is added to the growth medium.
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a. Metagenomics b. Mitochondrial genomics c. Proteomics d. Pharmacogenomics
There is significantly more genetic variation between human populations than within them
a. True b. False
Each of the following is an essential feature of electron transfer from water to NADP+ except
A) PSII. B) PSI. C) coenzyme Q. D) plastocyanin (PC). E) cytochrome b6/f complex.
The ________ of a eukaryotic cell is the organelle that houses the genetic material known as DNA.
Fill in the blank(s) with the appropriate word(s).