What is the main difference between siRNA and miRNA?
A. siRNAs are involved in RNA interference; miRNAs are not.
B. miRNAs are encoded by the genome; siRNAsare not.
C. miRNAs are processed by Dicer; siRNAs are not.
D. siRNAs are double-stranded; miRNAs are not.
B
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Which of the following features of plant cells allows for apoplastic movement of water?
A) porous cell walls B) plasmodesmata C) large central vacuole D) endodermal cells
In the light-dependent reactions of photosynthesis, an excited electron from photosystem II is passed
along an electron transport chain to ___________.
a. NAD+ b. NADH c. photosystem I d. oxygen e. water
In gal+ yeast, what is the product of the galactose utilization pathway?
What will be an ideal response?
Which of the following statements about the Malpighian tubules is false?
a. Water and some solutes are transported into the Malpighian tubules via active transport. b. The Malpighian tubules empty into the gut of the insect. c. Water, some salts, and other solutes are reabsorbed into the hemolymph in the rectum. d. The excretory system of an insect may contain up to several hundred Malpighian tubules. e. The blind ends of the Malpighian tubules are bathed in hemolymph.