Question

Binding and hydrolysis of ATP in a "cassette" domain is part of the transport mechanism of which of the following types of transporters?

A) ABC type
B) type
C) P type
D) V type
E) All of the above are correct.

Answer 1

The correct answer is A) ABC type transporters, as they specifically utilize the binding and hydrolysis of ATP within a 'cassette' domain to transport substances across cell membranes.

Step-by-step explanation:

The use of ATP (adenosine triphosphate) in active transport involves specific carrier proteins. Among these, the ABC transporters (ATP-Binding Cassette) utilize the binding and hydrolysis of ATP within a 'cassette' domain as part of their mechanism for transporting substances across the membrane. This is in contrast with other pumps like P-type, V-type, and others which use ATP differently or are not dependent on ATP at all in facilitated diffusion.

The ABC type transporters move various molecules across membranes by changing conformation when ATP is bound and subsequently hydrolyzed. This process often results in the movement of a substance against its concentration gradient, which requires energy. As such, the correct answer to which of the transport mechanisms utilizes the binding and hydrolysis of ATP in a cassette domain is A) ABC type.