The _______ is surrounded by a double membrane, contains the cells DNA, and acts as the control center.

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


Ans: Nucleus

Biology & Microbiology

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Pyruvate can be metabolized along two major routes. They are

A. oxidation and reduction. B. fermentation and respiration. C. metabolism and anabolism. D. anabolism and catabolism.

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Because of its location in the electron transfer

chain, delivery of electrons to each FAD results in __________ ATPs. a. 4 b. 2 c. 3 d. 32 e. 0

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Which of the following types of reproductive barriers separates a pair of moth species that could interbreed but for the fact that the females' mating pheromones are not attractive to the males of the other species?

A) temporal isolation B) behavioral isolation C) mechanical isolation D) gametic isolation

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In humans, if nondisjunction led to an individual with a genotype of XO, that person would

A. be male because each cell has only one X chromosome. B. not survive. C. be female because each cell lacks a Y chromosome. D. display both male and female characteristics.

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