This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Which of the following correctly describes the structure of normal hemoglobin A (Hb A)? a. Four ... (Read 48 times)

WWatsford

  • Hero Member
  • *****
  • Posts: 539
    • Biology Forums!
on: Jun 25, 2018
Which of the following correctly describes the structure of normal hemoglobin A (Hb A)?
 
  a. Four identical polypeptide chains, each containing two heme groups
  b. Two a and two b polypeptide chains, each containing one heme group
  c. Conjugated protein with 141 amino acids, containing two atoms of iron
  d. Two d and two g polypeptide chains, each containing a single heme group

Question 2

Which of the following is most responsible for the strength and pliancy of the red cell membrane?
 
  a. Glycophorin A
  b. Spectrin
  c. Cholesterol
  d. Ankyrin


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

johnpizzaz

  • Sr. Member
  • ****
  • Posts: 345
Reply #1 on: Jun 25, 2018
Answer to Question 1

ANS: B
Hb A is composed of two a and two b chains. Each of these chains contains one heme group.

Answer to Question 2

ANS: B
Spectrin composes 50 to 70 of the membrane skeletal mass and is the primary peripheral protein involved in maintaining the skeletal structure of the red cell. By the way it lines up with other spectrin molecules, it also plays an important role in making the red cell membrane deformable (pliant). This flexibility is important for permitting the red cell to squeeze through pores that have a diameter smaller than that of the red cell.


WWatsford

  • Member
  • Posts: 539
Reply 2 on: Jun 25, 2018
Wow, this really help

strudel15

  • Member
  • Posts: 324
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.

Did you know?

The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.

Did you know?

There are more nerve cells in one human brain than there are stars in the Milky Way.

Did you know?

Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.

Did you know?

Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.

RNA structure detail RNA structure detail
Four ways to visualize protein structure Four ways to visualize protein structure
Changes in bronchioles during an asthma attack: (a) normal bronchiole; (b) asthmatic bronchiole. Changes in bronchioles during an asthma attack: (a) normal bronchiole; (b) asthmatic bronchiole.
Opener Crystal structure of a Thermus thermophilus Opener Crystal structure of a Thermus thermophilus
Heritable Changes in Chromosome Structure Heritable Changes in Chromosome Structure
Mitochondrial structure and function Mitochondrial structure and function
Video: Double Vacuum Process (Illustration No Audio)

For a complete list of videos, visit our video library