The body region where a ciliary escalator helps to sweep microbes trapped in mucus away from that body site is the ________.

A. respiratory tract
B. urinary tract
C. skin
D. digestive tract
E. eyes


Answer: A

Biology & Microbiology

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________ refers to the removal of an amino group from an amino acid. One mechanism for this removal is ________, in which the amino group is transferred to an acceptor molecule.

A. Deamination; transamination B. Deamination; hydrolysis C. Transamination; deamination D. Hydrolysis; transamination

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The most recent common ancestor of a bird and a turtle is also the most recent common ancestor of a bird and which other group?

A. snake B. human C. crocodile D. frog E. None of the of the answer options is correct.

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Which of the following is not a feature of a bacterial artificial chromosome (BAC) vector?

A. CEN sequences B. origin of replication (ori) C. par genes D. selectable antibiotic resistance gene E. cloning site within the ?-galactosidase gene

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Indicate the products of aerobic respiration.

A. Water B. CO2 C. NADH D. ATP E. O2 F. All of the choices are correct.

Biology & Microbiology