Which of the statements about the synthesis of polypeptides (proteins) is INCORRECT?
A. Translation is the process of protein synthesis.
B. Proteins are synthesized in the cytosol.
C. The synthesis of proteins is a catabolic process.
D. The synthesis of proteins requires ribosomes.
E. Proteins are synthesized from mRNA template.
C. The synthesis of proteins is a catabolic process.
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The change of the pattern of gene expression without changing the nucleotide sequence of DNA is
termed _________________. Fill in the blank(s) with the appropriate word(s).
Nondisjunction in humans can result in a person with
A. twenty-two pairs of autosomes, an X chromosome, and a Y chromosome. B. twenty-two pairs of autosomes and two X chromosomes. C. forty-seven chromosomes. D. forty-six chromosomes.
Which tissue is best adapted to survive under anaerobic conditions?
Which of the following is not an accurate description of events leading to the lysogenic pathway following viral infection in a bacterium?
A. Upon infection, the linear bacteriophage DNA forms a circle and transcription is initiated at promoters PL and PR. The transcripts from PR encode the proteins cro and cII. B. Reduction in the concentration of cI protein is the most important contributor to lysogeny. C. Reduced protease activity due to poor conditions allows cII to accumulate, which then stimulates transcription from PE and thus expression of cI. D. cI protein binds to operator OR , preventing cro and cII expression. E. cI protein stimulates transcription from promoter PM, leading to even more cI production. The increased cI binds to operator OL and inhibits PL.