Alpha helices are coils with how many amino acids per complete turn?
A. 2.5
B. 3.6
C. 4.8
D. 10
E. 20
Answer: B
Biology & Microbiology
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How many chromosomes are present in human somatic cells?
a. 22 b. 23 c. 44 d. 46 e. 48
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How many times does DNA wrap around a histone?
a. 1 b. 2 c. 4
d. 6 e. 10
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A mutation that involves the addition, subtraction, or substitution of a single base is known as:
a) an inversion. b) polypoloidy. c) a pickle d) a basic mutation. e) a point mutation.
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Which structure do sea slugs use to feed on their prey?
A) nematocysts B) an incurrent siphon C) a radula D) a mantle cavity
Biology & Microbiology