Multiple Choice
ABC transporters are a part of a superfamily of transporters that have two nucleotide binding domains that bind __________, which is necessary for primary active transport.
11. Biological Membranes and Transport
ABC Transporters
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What side of a membrane has a higher concentration of the toxin Limbricide after ABC transporter activity?
A
Inside the cell.
B
outside the cell.
Verified step by step guidance1
Understand the role of ABC transporters: ABC (ATP-Binding Cassette) transporters are a family of proteins that use the energy from ATP hydrolysis to transport various molecules across cellular membranes.
Identify the direction of transport: ABC transporters typically move substances from the inside of the cell to the outside, against their concentration gradient, using energy from ATP.
Consider the concentration gradient: Since ABC transporters actively transport substances out of the cell, the concentration of the toxin Limbricide will be higher outside the cell after the transport process.
Relate to the problem: Given that the ABC transporter is involved, the toxin Limbricide will be transported from the inside to the outside of the cell, resulting in a higher concentration outside.
Conclude based on the mechanism: The activity of the ABC transporter leads to the accumulation of the toxin Limbricide outside the cell, which is consistent with the correct answer provided.
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