Which of the following does not act to increase the amount of calcium in the blood?

A. kidneys
B. intestines
C. calcitonin
D. bones
E. parathyroid hormone


Answer: C

Biology & Microbiology

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True multicellularity is a major characteristic of  

A.  all eukaryotes and a few prokaryotes. B.  animals and plants only. C.  eukaryotes only. D.  protists, plants, and animals. E.  prokaryotes and protists.

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Because of its association with tools, the earliest human was called ____________ meaning "handy man."  

A.  Homo habilis B.  Homo erectus C.  Homo sapiens D.  Neanderthal E.  Cro-Magnon

Biology & Microbiology

Capsules are stained using a(n)

a) negative stain. b) Gram stain. c) Schaeffer-Fulton stain. d) acid-fast stain.

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Which of the following phyla is most closely related to echinoderms?

A) Annelida B) Mollusca C) Arthropoda D) Chordata

Biology & Microbiology