Mutations of lacOC lead to attenuated expression of lac structural genes
Indicate whether the statement is true or false
FALSE
Explanation: Mutations of lacOC lead to constitutive expression.
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The nucleoli are found within the nucleus and synthesize ____
a. chromatin b. mRNA c. ribosomal subunits d. genes e. proteins
Which way do ocean currents circulate in the
Northern Hemisphere?
a. counterclockwise b. clockwise c. both clockwise and counterclockwise d. neither clockwise and counterclockwise e. none of these
Which of the following is the binding site for RNA polymerase on the DNA molecule?
a. structural genes. b. repressor gene. c. promoter sequence. d. operator sequence. e. region between an operator and the first structural gene.
A nucleotide contains
A. glycerol and fatty acids. B. a base, sugar, and phosphate group. C. amino acids. D. an acid, base, and salt.