Question 12 1 pts In addition to red blood cells, the membrane protein CHIP28 oc

Question

Question 12 1 pts In addition to red blood cells, the membrane protein CHIP28 occurs in kidney cells, where rapid water movement is important. The mRNA for kidney CHIP28 was purified and injected into frog oocytes, which normally have limited diffusion of water across the cell membrane. After 2 days to allow for protein synthesis and membrane insertion stimulated by the mRNA, the oocytes were placed in a hypotonic medium and cell size was measured by microscopy The experiment was repeated for 3 minutes in the presence of mercuric chloride which alters protein structure, and followed by 3 minutes in mercaptoethanol, which restores protein structure. The results are shown in Table B. What can you conclude about the substance that allowed rapid water movement into the cells in the hypotonic medium? Table B Relative cell volume Time in hypotonic medium (min) Mercuric chloride, then mercaptoethanol Mercuric chloride 1.00 1.01 1.02 1.01 1.01 1.03 0.5 1.5 1.13 1.41 It is a protein transporter channel It is a lipid-based transporter It is a sugar-coating on the outside of cytosolic proteins It is a enzyme which add lipids to proteins. None of the above

Explanation / Answer

Ans. 1 it is protein transport channel. Chip 28 is integral transmembrane protein channel that allow rapid movement of water.

Ans. 2 the photons from blue light directly opens all the potassium channel in the brain of the mouse .

Related Questions

Navigate

• Browse (All)
• Browse Q
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.