The ability of glucose to repress the lac operon depends on which of the following effector molecules?

A. allolactose
B. cAMP
C. tryptophan
D. ADP
E. starch


B. cAMP

Biology & Microbiology

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A pea plant is known to be heterozygous and is described as YyWw. This is the plant's ________.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

Tinea pedis is

A. an infection of scalp hair. B. known as "jock itch." C. known as "athlete's foot." D. a beard infection.

Biology & Microbiology

Explain how epigenetic inheritance (for example, DNA methylation) can result in different phenotypes observed in

identical twins (who have identical DNA sequences). What will be an ideal response?

Biology & Microbiology

Density-independent factors that limit population growth include ____.

A. parasites B. temperature C. disease D. competition E. predation

Biology & Microbiology