Lactose Transporter How Does it Work

The video explains the lactose transporter, a type of secondary active transport, which requires a proton pump to function. The pump creates a proton concentration gradient, enabling lactose to be transported into the cell. The mechanism involves protonation of a carboxyl group, leading to a conformational change in the transporter protein. Inhibition of the proton pump disrupts this process. The video concludes with a preview of primary active transport.

Explain how the proton pump contributes to the function of the lactose transporter.

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How does the concentration gradient of protons affect the transport of lactose?

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What is the role of the lactose transporter in secondary active transport?

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Describe the process by which lactose is transported into the cell.

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What happens to the carboxyl group during the transport process?

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What would happen to the lactose transporter if the proton pump is inhibited?

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Discuss the significance of secondary active transport in the context of lactose permease.

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