The normal pH of body fluids is ____

a. acidic
b. always 7.0
c. slightly basic
d. in the 6.0-8.0 range
e. controlled primarily by water balance


ANSWER: c

Biology & Microbiology

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Hemophilia is a sex-linked, recessive genetic disorder. If a woman who was a carrier for hemophilia married a man who had the disorder, which of the following is not true?

A. Female children would have a 50% chance of being hemophiliac. B. Male children would have a 50% chance of being hemophiliac. C. All male children would be hemophiliac. D. Female children would either have the disorder or be a carrier for the disorder.

Biology & Microbiology

In mammals, females have two copies of the X chromosome, whereas males have only one copy. Dosage compensation is accomplished in mammals by:

A. females inactivating the X chromosome from the mother in all the cells. B. males inactivating the X chromosome from the father in all the cells. C. females expressing the X-encoded genes at 2 times the level of the male. D. males expressing the X-encoded genes at half the level of the female. E. females possessing a randomly inactivated X chromosome in all cells.

Biology & Microbiology

Which of the following groups of animals is most efficient at extracting oxygen from the atmosphere?

A) Reptiles B) Amphibians C) Birds D) Mammals E) Insects

Biology & Microbiology

How do undifferentiated cells "know" what to become?

What will be an ideal response?

Biology & Microbiology