Membranes homework (11 docx (Compatibility Model - Word E INSERT DESIGN PAGE LAY

Question

Membranes homework (11 docx (Compatibility Model - Word E INSERT DESIGN PAGE LAYOUT REFERENCES MAILINGS REVIEW VIEW Its-la··11Normal!!No Spac.. B1W-aex, x'la-y.A- Heading 1 Heading 2 Title Painter Biology 1081 Homework 2.20.18 Due by Friday 2.23.18 at 1pm. Student Name Molecules can move across a membrane by 3 different mechanisms. What are these mechanisms and how do they differ from one another? For each mechanism, name one molecule that uses that mechanism to cross the membrane 1. 2. A single celled animal e.g amoeba, has an internal solute concentration of 5mM. The amoeba

Explanation / Answer

Uniport, symport, and antiport.

In case of UniProt, only one types of molecules can pass through the membrane.

In case of symport and antiport, two different molecules pass through the membrane.

In symport, one type of molecule helps in the movement of another type of molecule in the same direction whereas in case of antiport one molecules move in one direction the other molecules moves in opposite direction

Ex-

UniProt- GLUT1 transport glucose

Symport- Na+ and glucose transporter

Antiport- Na+ K+ antiport channel

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