Some tRNA often contains sections of noncomplementary, unusual bases (i.e., other than U, C, A, and G), which are added after transcription. What area of the tRNA would never contain such odd bases in a living organism?
What will be an ideal response?
They would never be found in the anticodon because there would be no way to pair with any codon of the mRNA.
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Why does conjugation with an Hfr donor result in a much higher rate of gene transfer than conjugation with an F+ donor?
A) An F+ donor makes fewer pili. B) An F+ donor's T strand is slow to reach the pilus. C) The Hfr donor transfers genes from the chromosome and not the plasmid. D) The Hfr donor segment must undergo recombination in the recipient. E) The F+ donor segment must undergo recombination in the recipient.
A phycologist studies which of the following?
a. classi?cation of eukaryotes b. alternation of generations in algae c. rusts, smuts, and yeasts d. parasitic worms
Which of the following is endergonic?
A) the burning of wood B) breaking bonds in starch to produce glucose C) the digestion of proteins in the stomach D) cells breaking down glucose into CO2 E) the synthesis of glucose from carbon dioxide and water
After the activation of a G-protein, the sequence of signaling events consists of: