Disinfecting agents naturally produced by microorganisms are

A) aldehydes.
B) antibiotics.
C) halogens.
D) quaternary ammonium compounds.
E) triclosans.


B
Bloom's Taxonomy: Knowledge
Section: Chemical Methods of Microbial Control
Learning Outcome: 9.29

Biology & Microbiology

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An eight-year-old girl has scabs and pus-filled vesicles on her face and throat. Three weeks earlier she had visited her grandmother, who had shingles. What infection does the eight-year-old have?

A) chickenpox B) measles C) fever blisters D) scabies E) rubella

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Excess glucose is converted into glycogen in the:

a. pancreas b. liver c. thymus d. thyroid e. small intestine

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The waterproof cuticle covering the epidermis of land plants helps prevent dehydration, much like the skin of some land animals. As a consequence of having a cuticle, what other evolutionary adaptation was important for most land plants?

A. Root hairs on the root epidermis B. Stomata in the leaves C. Trichomes on leaf surfaces D. The endodermis in the root E. Collenchyma fibers just beneath the surface of the epidermis

Biology & Microbiology

Which one of the following is the study of matter and the energy that causes matter to combine, break apart, and recombine in everything living and nonliving?

A) biology B) geology C) chemistry D) physics

Biology & Microbiology