What gives structure to a sponge?
a. Asconoids
b. Spicules
c. Pinacocytes
d. Choanocytes
b
Biology & Microbiology
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In circular DNA, the molecule is not shortened during replication
A. true B. false
Biology & Microbiology
Which country currently has the largest ecological footprint?
A. Kuwait B. United States C. China D. India E. Saudi Arabia
Biology & Microbiology
Metabolism may have begun when ________ within rocks donated electrons to dissolved carbon monoxide (CO), forming organic compounds
a. oxygen b. iron sulfide c. hydrogen gas d. carbon dioxide e. ammonia
Biology & Microbiology
In the Gram-staining procedure, the mordant is ________.
A. alcohol B. crystal violet C. safranin D. iodine
Biology & Microbiology