Proteins that are embedded within the cytoplasmic membrane and not easily extracted are called ________ proteins.

A. internal
B. external
C. peripheral
D. integral


Answer: D

Biology & Microbiology

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Pangea, the name given to the supercontinent that existed before continental drift, was coined by:

a. Sir Francis Bacon. b. Alfred Wegener. c. Harry Hess. d. Edward Suess. e. Sir Alistair Hardy.

Biology & Microbiology

Why is it advantageous for transcription factors to be multimeric and for their binding sites to be clustered?

A) The strength of the DNA-protein interactions is increased. B) The DNA sequence specificity of each DNA-protein interaction is increased. C) Each DNA-protein complex is better able to bind to RNA polymerase. D) Competition for binding between different transcription factors for the same regulatory region is decreased.

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What organism exhibits complete genetic linkage, meaning there is no recombination between homologous chromosomes?

What will be an ideal response?

Biology & Microbiology

The only survivors of a colony on Venus are a man and a woman, who both happen to originally be from southern

Ukraine. Their descendants will show the effect of ____.

a. genetic drift b. punctuated equilibrium c. excessive mutation d. heterozygote advantage e. frequency-dependent selection

Biology & Microbiology