The MOST important potential common source of infectious disease is

A) industrial waste.
B) arthropod reservoirs found near surface water supplies.
C) water.
D) human and animal wastes.


Answer: C

Biology & Microbiology

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All protists have cell walls

A. true B. false

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The human vestibular apparatus is a nonadapting sensory system

Indicate whether the statement is true or false.

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After DNA fragments with complementary sticky ends base pair, ____seals the gaps between the fragments to produce

a continuous DNA molecule.

a. plasmids b. E. coli c. EcoRI d. DNA ligase e. restriction enzymes

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Which group includes the lineages Anura, Urodela, and Gymnophiona?

a. Squamata b. Testudines c. Archosauromorpha d. Amphibia

Biology & Microbiology