Which of the following is false about the E. coli Lac operon?

A. it is an example of negative control
B. the presence of lactose acts as an inducer
C. the repressor binds to the operator
D. the mRNA for the receptor binds to the operator


D. the mRNA for the receptor binds to the operator

Biology & Microbiology

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As the action potential peaks, ____

a. the activation gates of Na+ channels close b. the inactivation gates of Na+ channels close

c. the activation gates of K+ channels close d. the inactivation gates of Na+ channels close e. Na+/K+ active transport pumps are activated

Biology & Microbiology

All tissues and organs of an adult animal arise from

three primary tissue layers, or germ layers that form in early embryos: __________, __________, and __________ into blood. Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

Which term refers to the external form of a plant?

a. anatomy b. morphology c. physiology d. ecology

Biology & Microbiology

The most important electron carrier in cellular respiration is ________

Fill in the blank(s) with correct word

Biology & Microbiology