Which of the following is stored in cells of the immune system and released during an allergic
reaction?
a. nitric oxide
b. a growth factor
c. histamine
d. a prostaglandin
e. a neurotransmitter
C
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Palindrome sequences are often found at mutation hotspots. Which of the following is a palindrome?
A) ATTACGGC B) ATATGCGC C) GATCCTAG D) GATCGATC
Subphylum _______ includes scorpions and spiders, which have special additional appendages that are used mostly for feeding.
a. Chelicerata b. Hexapoda c. Myriapoda d. Crustacea
What is the basic problem with cloning adult animals?
a. obtaining enough DNA b. finding proper surrogates to carry the cloned embryos c. reprogramming the DNA d. obtaining DNA without mutations e. autoimmune rejection of the embryo by the surrogate
Darwin's finches, and the studies by the Grants, finally proved that
A. differences in beak size were the result of natural selection and were inherited. B. beak size adjusted within a given year depending on nutrition status. C. beak sizes were completely random and no pattern was determined. D. beak sizes made no difference as to the food being eaten.