It is presumed that the peroxisomes evolved in these primitive, proto-eukaryotes to remove oxygen, which was toxic to the primitive cells.

a. true
b. false


Ans: a. true

Biology & Microbiology

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Which of the following is a deforested area

more likely to experience? a. nutrient poor soils. b. soil loss. c. loss of species diversity. d. warmer temperatures. e. all of these.

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During the initiation step of transcription, which molecule binds the promoter region of a DNA molecule?

A) DNA polymerase B) Reverse transcriptase C) RNA polymerase D) DNA primase E) Topoisomerase

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A contractile ring forms in which type of cells?

A) Plants B) Animal C) Animals and plants D) Bacteria and plants

Biology & Microbiology

Enhancers are said to be cis-acting. What is meant by cis-acting, and what are enhancers?

What will be an ideal response?

Biology & Microbiology