Where is the majority of DNA located in a human cell?
a. nucleus
b. mitochondrion
c. chloroplast
d. ribosome
Answer: a. nucleus
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The lacA gene found within the lac operon encodes for galactosidase transacetylase. This enzyme attaches a(n) ________ group to lactose and lactose analogs.
A. amino B. hydroxyl C. carbonyl D. acetyl E. carboxyl
Describe why many systematists adopt the principle of parsimony
What will be an ideal response?
Where would you most likely find fossilized remains of humans and their immediate ancestors?
a. only in relatively old rock b. only in relatively young rock c. only in rock formed from volcanoes d. only in rock from the Precambrian times e. in any rock from areas inhabited by humans
Infection of the skin by Trichophyton rubrum results in raised red scaly patches of skin, a condition known as
A) dermatophytosis. B) candidiasis. C) mucormycosis. D) pityriasis. E) sporothrichosis.