Peptide bonds form between ________
A) amino acids
B) an mRNA codon and a tRNA anticodon
C) a tRNA and the amino acid it is carrying
D) an mRNA transcript and the small ribosomal subunit
A
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When several possible phylogenetic trees can be produced from a data set, the most parsimonious tree:
A. is the one that shows the smallest number of evolutionary changes. B. is the one that shows the largest number of nodes. C. is the one that shows the largest number of analogous characteristics. D. is the one that shows the smallest number of synapomorphies. E. is the one that shows the smallest number of branches.
The system of tubes and sacs that makes enzymes,
proteins and lipids is(are) the a. Golgi bodies. b. ribosomes. c. vesicles. d. lysosomes. e. endoplasmic reticulum.
Nephrotic syndrome is characterized by
a. large amounts of protein. d. large amounts of urea. b. inability to thermoregulate. e. increased urine production. c. inability to urinate.
Glyceraldehyde 3-phosphate dehydrogenase operates by stripping a hydride ion from its substrate. Which molecule is the recipient of the proton and two electrons during this transfer?
(a) oxygen (b) acetyl CoA (c) NAD+ (d) FADH