You look under a microscope and notice a cell has replicated its chromosomes. What stage of the cell cycle would the cell enter next?
a. G1
b. S
c. G2
d. interphase
c. G2
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Feeding chickens a strain of Bacillus subtilis leads to
A. increased body weight and feed conversion. B. lower carriage of the pathogenic E. coli strain O157:H7. C. a reduction in coliforms and Campylobacter in the processed carcasses. D. increased body weight and feed conversion and a reduction in coliforms and Campylobacter in the processed carcasses. E. All of the choices are correct.
Ribozymes are ________
a. laboratory-formed selectively permeable vesicles b. catalytic RNAs c. fossils of an early eukaryote d. dome-shaped layered structures formed by marine bacteria
In the trp operon, attenuation occurs through translation of two Trp codons in the leader sequence. What would happen if these two codons were mutated to stop codons?
A) Region 1 will bind to region 3 in the absence of Trp. B) The antiterminator loop will form in the presence or absence of Trp. C) Region 3 will bind to region 4 in and transcription will proceed in the presence or absence of Trp. D) Region 3 will bind to region 1 in the presence of Trp.
Explain why male baboons have evolved to be larger than the females of the species.
What will be an ideal response?