Treatment of Isolated Sperm Axonemes with 0

question 77

Multiple Choice

Treatment of isolated sperm axonemes with 0.6 M NaCl has been shown to remove selectively the outer arms from the A microtubules of the axoneme,leaving the inner arms in place.What would be the most likely effect on the NaCl-treated axoneme when ATP was added to the medium?

• A)The axoneme would fall apart completely.
• B)The axonemes would beat at about half the rate of the intact axoneme.
• C)The central microtubules would disassemble leaving the rest of the axoneme intact.
• D)The axoneme would be solubilized.
• E)Every element of the axoneme would be permanently cross-linked.

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Definitions:

Modus Ponens

A form of deductive reasoning that asserts if a conditional statement "If P, then Q" is accepted as true and P is true, then Q must also be true.

Modus Tollens

A method of logical argument that infers the falsehood of a proposition from the impossibility of its consequence.

Hypothetical Syllogism

A form of reasoning where if the first condition holds, then the second condition must follow, leading to a conclusion if the initial hypothesis is true.

Fossils

The preserved remains or traces of animals, plants, and other organisms from the remote past.