Multiple Choice Questions: Explain why you got that Answer If solution X (sucros

Question

Multiple Choice Questions: Explain why you got that Answer

If solution X (sucrose solution) and solution Y (purified water) are separated by a selectively permeable membrane including aquaporins, what change (if any) regarding osmosis will occur across the membrane?

•A) Water will travel from X to Y because X is hyperosmotic to Y
•B) The solutions are iso-osmotic so no change will occur
•C) Water will travel from Y to X because Y is hypo-osmotic to X
•D) Water will travel from X to Y because X is hypo-osmotic to Y

An overweight person with Type II Diabetes has an elevated level of blood glucose. This elevated level of blood glucose causes the pancreas to produce a larger amount of insulin than normal to maintain homeostasis. What will the liver have to do to help keep the body at homeostasis?

A. Down regulate

B. Up regulate

C. Release ADH into the system

D. Release Pilocarpine

Explanation / Answer

1. Answer is (C). Water will travel from Y (purified water) to X (sucrose solution) because Y is hypo-osmotic to X.       In osmosis, water passes rapidly through a selectively permeable membrane including aquaporin because aquaporin provides more permeability to water than to other ions or larger molecules to pass through the membrane. Thus, water will travel towards soultion containing sucrose. --------------------------------------------------------------------------------------------------- 2. Answer is (A). Downregulation       In osmosis, water passes rapidly through a selectively permeable membrane including aquaporin because aquaporin provides more permeability to water than to other ions or larger molecules to pass through the membrane. Thus, water will travel towards soultion containing sucrose. --------------------------------------------------------------------------------------------------- 2. Answer is (A). Downregulation      The elevated levels of blood glucose causes the pancreas to produce a larger amount of insulin than normal to maintain homeostasis through downregulation.  In the process of downregulation, insulin binds to its receptors on the surface of a cell, which undergoes endocytosis and provides a pathway for degradation of the hormone as well as for regulation of the number of sites that are available for binding on ghr cell surface.      The elevated levels of blood glucose causes the pancreas to produce a larger amount of insulin than normal to maintain homeostasis through downregulation.  In the process of downregulation, insulin binds to its receptors on the surface of a cell, which undergoes endocytosis and provides a pathway for degradation of the hormone as well as for regulation of the number of sites that are available for binding on ghr cell surface.

Related Questions

Navigate

• Browse (All)
• Browse M
• Subjects

---

---

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