Proteins synthesized in bacteria have which of the following at their amino terminal end?
a. N-formyl-methionine
b. N-acetyl-adenine
c. adenine triphosphate
d. The AUG codon
e. The UUU codon
ANSWER: a
You might also like to view...
Which of the following statements is correct regarding chromosomes in a eukaryotic cell?
A. Chromosomes are strands of RNA, tightly wrapped up, that are in the cytoplasm. B. Chromosomes are strands of DNA, tightly wrapped up, that are located in the nucleus. C. Chromosomes are strands of RNA, loosely wrapped up, that are located everywhere in the cell. D. Chromosomes are strands of DNA, tightly wrapped up, that are located everywhere in the cell.
What is the function of heat shock proteins in the cell?
a. prevent the cytoplasm from boiling in hot weather b. protect the plasma membrane from dissolving c. correct folding errors in proteins within the cell d. reset cell metabolism after cold weather hibernation
When experimenting with Streptococcus pneumoniae in the 1920s, Griffith concluded that some substance from the dead S strain bacteria passed to the R strain bacteria, imparting virulence and the ability to form a capsule. Avery and others continued the search for the substance that "transformed" the R strain into the S strain.Hypothesis I:Genetic material or "transforming substance" is protein.Hypothesis II:Genetic material or "transforming substance" is RNA.Hypothesis III:Genetic material or "transforming substance" is DNA.An experiment was performed in which DNAase enzyme digestion prevented transformation. This finding
A. supports Hypothesis I. B. supports Hypothesis II. C. supports Hypothesis III. D. rejects Hypothesis I only. E. rejects Hypothesis II only. F. rejects Hypothesis III only. G. does not support any of these hypotheses.
Which group is characterized by gritty, glassy, protective shells?
A) Water molds B) Slime molds C) Dinoflagellates D) Diatoms E) Brown algae