The cornea is part of the
(a) sclera.
(b) choroid.
(c) retina.
(d) lens.
(a) sclera.
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In RNAi, imperfect pairing of miRNA to target mRNA results in ____ while perfect pairing of miRNA to target
mRNA causes ____.
a. blocking transcription of the target mRNA; mRNA degradation b. blocking translation of the target mRNA; mRNA degradation c. recruitment of siRNA; blocking translation of the target mRNA d. mRNA degradation; recruitment of siRNA e. blocking transcription of the target mRNA; blocking translation of the target mRNA
Which structure will form the outer layer of a bone? a. Yellow marrow b. Compact bone c. None of these choices
d. Spongy bone e. Red marrow
What is the evidence that exists to support the idea that the greater area of the tropics is the reason for higher diversity?
A) The land mass is greater at the equator than elsewhere on Earth. B) The area of the Atlantic Ocean is greater at the equator. C) There are more mountainous areas in the tropics, creating more surface area. D) The area between 0° and 10° is greater than between 60° and 70° latitude.
The secretion of __________ is an important homeostatic mechanism involved in maintaining normal
heart rhythm. a. hydrogen ions b. potassium c. water d. glucose e. urea