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.
Biology & Microbiology
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.
Biology & Microbiology
Which of the following phyla is most closely related to echinoderms?
A) Annelida B) Mollusca C) Arthropoda D) Chordata
Biology & Microbiology