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