The amniotic egg evolved ____ years ago
a. 1 billion
b. 650 million
c. 340 million
d. 240 million
e. 25 million
C
Biology & Microbiology
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The vacuole of the giant sulfide-oxidizing bacterium Thiomargarita namibiensis contains ________ that is used to oxidize sulfide under ________ conditions
A) nitrate / anoxic B) sulfate / anoxic C) oxygen / oxic D) sulfur / anoxic
Biology & Microbiology
Does it make a difference which peak of the predator population you choose to examine?
a. yes b. no
Biology & Microbiology
Glucose is transported into a cell by ____
a. active transport b. exocytosis c. facilitated diffusion d. phagocytosis e. osmosis
Biology & Microbiology
Which portion of the respiratory tract is commonly referred to as the "throat"?
a) larynx b) glottis c) epiglottis d) pharynx e) trachea
Biology & Microbiology