What structural element that is inserted into the major groove of DNA, where it recognizes specific DNA base pair sequences lining the groove, appears to be common to many DNA-binding motifs?
a) a ?-pleated sheet
b) an ?-helix
c) a double helix
d) a random coil
Ans: b) an ?-helix
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Lipid-soluble hormones
A. do not require a second messenger. B. have a slower release time than water-soluble hormones. C. pass through cell membranes. D. alter gene expression. E. All of the answer choices are correct.
Adaptations that exert a strong competitive force on a predator are the result of coevolution. Indicate whether the statement is true or false
The number of individuals that die in a population pe unit time is its
A. immigration rate. B. emigration rate. C. death rate. D. birth rate. E. expatriation rate.
Inflammation is characterized by redness, warmth, swelling, and pain. Redness matches the Latin term
A) calor. B) tumor. C) dolor. D) rubor.