A flagellated cell involved in bringing water into the spongocoel of sponges is called a(n):
a. spicule.
b. choanocyte.
c. osculum.
d. ostium.
e. pinocyte.
B
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Which genus produces hyaluronidase?
A) Mycobacteria B) Streptococcus C) Shigella D) Procholorococcus
In ATP production, "assembly line" chains of reactions capture and use energy released by electrons
These chains are called a(n) a. glycolytic pathway. b. free radical acceptor. c. active transport system. d. electron transport system. e. antioxidant.
A _____ bond always involves hydrogen
Fill in the blank(s) with the appropriate word(s).
In studying fossils, biologists found an insect in a layer of clay, a flower in a layer of sand, a fish in a layer of mud, a reptile in a layer of clay, and a bird in a layer of rock. The insect probably lived at the same time as the
A. fish. B. bird. C. flower. D. reptile.