Protection from injury, dehydration, and microbes is provided by the

a. immune system.
b. skeletal system.
c. integumentary system.
d. endocrine system.
e. lymphatic system.


C

Biology & Microbiology

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Which of the following is not a member of the phylum Platyhelminthes?

a. fluke b. tapeworm c. flatworm d. ribbon worm

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Protobionts produced by abiotically produced polypeptides are called:a

prokaryotes. b. stromatolites. c. microspheres. d. peptidebionts. e. polybionts.

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________ can be a symptom of hypothyroidism

A) Goiter B) A low sperm count C) Graves' disease D) Hyperactivity

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Koch's postulates can be used to determine the causes of infectious diseases

Indicate whether the statement is true or false

Biology & Microbiology