A group of genes, a promoter, and an operator that control transcription, in prokaryotes, is a(n)
A. translational unit.
B. chromosome.
C. ribosome.
D. envelope.
E. operon.
E. operon
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Human insulin, which does not provoke allergic reac-tions, has been produced by transgenic E. coli since ____
a. 1952 b. 1962 c. 1972 d. 1982 e. 1992
Assume that an organism has a diploid chromosome number of 14. There would be 28 chromosomes in a tetraploid
Indicate whether the statement is true or false
Cells are always producing proteins from every gene they possess.
a. true b. false
Which of the following is true of anabolic reactions?
a. Anabolic reactions break down complex organic compounds into simpler ones. b. Anabolic reactions produce energy, which is used to convert ADP to ATP. c. Anabolic reactions use ATP and small substrates as building blocks to synthesize larger molecules. d. Anabolic and catabolic reactions both build complex organic molecules from simpler ones; however, anabolic reactions use ATP, whereas catabolic reactions transfer energy to create ATP.