In humans, how many of the mother's chromosomes are present in the egg before it is fertilized?

A. 2
B. 1
C. 46
D. 23
E. 4


D. 23

Biology & Microbiology

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What molecular interaction allows histones to interact with DNA?

What will be an ideal response?

Biology & Microbiology

During fermentation, the immediate fate of the electrons in NADH is that they:a

are transferred to the electron transport chain. b. are transferred to an organic molecule. c. are transferred to O2. d. are used to make CO2. e. are used to form H2O.

Biology & Microbiology

Which of the following statements about lipids is incorrect?

A) They are short chains of polar hydrocarbons. B) They are used for energy storage. C) They are large chains of nonpolar hydrocarbons. D) They are primary component of cell membranes. E) They are hydrophobic and water insoluble.

Biology & Microbiology

Which hypersensitivity disorder is the result of cell-mediated response?

A) type I B) type II C) type III D) type IV E) both type I and II

Biology & Microbiology