« previous next »

Author Question: What is responsible for erythrocyte deformability and maintaining cell shape? a. Membrane ... (Read 28 times)

tiara099

  • Hero Member
  • *****
  • Posts: 588
on: Jun 25, 2018
What is responsible for erythrocyte deformability and maintaining cell shape?
 
  a. Membrane proteins
  b. Na+ and K+ pump
  c. Membrane lipids
  d. Ca2+ pump

Question 2

What important function does 2,3-BPG perform?
 
  a. Maintains iron in the hemoglobin molecule in the ferrous state
  b. Prevents oxidative injury to the red cell
  c. Facilitates the delivery of oxygen to tissue
  d. Aids in the exchange of membrane lipids with lipids in plasma


amit

  • Sr. Member
  • ****
  • Posts: 364
Reply #1 on: Jun 25, 2018
Answer to Question 1

ANS: A
Proteins in the membrane are responsible for maintaining the shape and deformability of the red cell. Cation pumps maintain the Na+ and K+ gradient within the red cell. Membrane lipids form the fluid foundation into which the membrane proteins are inserted. The Ca2+ pump maintains intracellular levels of Ca2+.

Answer to Question 2

ANS: C
2,3-BPG plays a critical role in the effective transport of oxygen to tissue. It is produced via a shunt off the EMP. Elevations in 2,3-BPG are seen in a number of situations such as anemia; they result in more effective delivery of oxygen to tissue. It has no role in the other functions listed.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

Did you know?

More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.

Did you know?

Though “Krazy Glue” or “Super Glue” has the ability to seal small wounds, it is not recommended for this purpose since it contains many substances that should not enter the body through the skin, and may be harmful.

Did you know?

The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.

Did you know?

The average human gut is home to perhaps 500 to 1,000 different species of bacteria.

Electron micrographs of a cellular membrane. Electron micrographs of a cellular membrane.
Diagram of a flagellate stramenopile cell, showing characteristic flagellar hairs. Diagram of a flagellate stramenopile cell, showing characteristic flagellar hairs.
Plant cell water potential. Plant cell water potential.
Cell showing nucleoids within mitochondria Cell showing nucleoids within mitochondria
Local and long–distance cell communication in animals. Local and long–distance cell communication in animals.
Perforated tympanic membrane. Perforated tympanic membrane.
Video: Asthma Treatment

For a complete list of videos, visit our video library