Functions of the mantle in clams include
(a) secreting the shell.
(b) forming pearls around irritating grains of sand.
(c) forming the incurrent and excurrent siphons.
(d) all of the above.
(d) all of the above.
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A major problem for parasites is gaining access to and escaping from the host
Indicate whether the statement is true or false
In the reaction catalyzed by aconitase, the conversion of citrate to isocitrate is inhibited by fluoroacetate. Fluoroacetate is used as a pesticide. Why is this an effective pesticide?
A. It inhibits the Krebs cycle. B. It inhibits pyruvate oxidation. C. It inhibits glycolysis. D. It inhibits ATP synthase. E. It inhibits the electron transport chain.
Contact dermatitis is a type (I/II/III/IV) hypersensitivity disorder
What will be an ideal response?
__________ provide much of our lumber for building and wood pulp for paper productions.
A. Charophytes B. Gymnosperms C. Bryophytes D. Seedless vascular plants