The pollen grain is indicated by
a. A.
b. B.
c. C.
d. D.
e. E.
Answer: d
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At the pH of most bodily fluids, which functional group will lose a proton and which functional group will accept a proton?
A. sulfhydryl; carbonyl B. Hydroxyl; amino C. amino; carboxyl D. carboxyl; amino E. carbonyl; Hydroxyl
In the presence of abundant iron in the cell, the iron binds IRP. The complex then binds to the IREs and
A. an increase in ferritin mRNA translation and a decrease in transferrin receptor mRNA stability B. a decrease in transferrin receptor mRNA translation and an increase in ferritin mRNA stability. C. an increase in ferritin and transferrin receptor mRNA translation. D. an increase in ferritin and transferrin receptor gene transcription.
The two principal divisions of the peripheral nervous system are the
a. somatic and autonomic systems. b. sympathetic and parasympathetic systems. c. peripheral and central systems. d. afferent and autonomic systems. e. cranial and skeletal nerves.
What is a simple definition of an allele?
What will be an ideal response?