Birds in which the lower bill protrudes much farther than the upper bill are

a. jaegers.
b. skimmers.
c. puffins.
d. penguins.
e. herons.


B

Biology & Microbiology

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If a human cell has two Barr bodies then the genotype of the individual could be

A. XXXY B. XXXXY. C. XXY. D. XYY.

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In proteins, nitrogen bases link covalently to ribose in DNA

Indicate whether the statement is true or false.

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Which of the following relationships is correct?

a. insects: Malpighian tubules: urea as major nitrogenous waste b. annelids: protonephridia: ammonia as major nitrogenous waste c. freshwater fish: kidney: large volume of hypertonic urine d. sharks: kidney: large volume of hypotonic urine e. earthworm: kidney: ammonia as major nitrogenous waste

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The accumulation of fluid at the site of a wound is the result of the secretion of:

A. neutrophils B. leukocytes C. histamines D. kinins

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