Which of the following processes is associated with some prokaryotic cells but not with eukaryotic cells?

(A) Photosynthesis
(B) Aerobic respiration
(C) Meiosis
(D) Nitrogen fixation
(E) Endocytosis


Ans: (D) Nitrogen fixation

Biology & Microbiology

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A. Reduced nitrogen compounds B. Reduced sulfur compounds C. Hydrogen gas D. All of the choices are correct.

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A. nigrosin. B. malachite green. C. gold oxide. D. ethidium bromide.

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Which London surgeon noted in 1775 that chimney sweeps exhibited frequent cancer of the scrotum?

A. Katsusaburo Yamagiwa B. Sir Percivall Pott C. Ernst Winder D. John Hill E. Richard Doll

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________ is necessary for a population to survive over successive generations in response to environmental changes

A) Speciation B) Gene flow C) Adaptation D) Sexual selection

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