Heat shock proteins (HSPs) help organisms survive heat stress. Genes that encode

Question

Heat shock proteins (HSPs) help organisms survive heat stress. Genes that encode heat shock proteins are regulated by activators (called HSP transcription factors) which bind regulatory regions of HSP genes only when temperatures are high. What would the result be of a mutation in the gene encoding HSP transcription factors rendering them nonfunctional?

a

HSPs will be produced at lower than normal temperatures

b

More HSPs would be transcribed than are needed, causing the organism to be very heat tolerant

c

HSP genes will not be transcribed, causing the organism to be susceptible to heat stress

d

There will be no effect

a

HSPs will be produced at lower than normal temperatures

b

More HSPs would be transcribed than are needed, causing the organism to be very heat tolerant

c

HSP genes will not be transcribed, causing the organism to be susceptible to heat stress

d

There will be no effect

Explanation / Answer

Answer

C -HSP genes will not be transcribed, causing the organism to be susceptible to heat stress.

mutated nonfunctional transcription factor wont be able to bind to the regulatory region of HSP genes. thus transcrption of HSP does not initiate.

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