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 92 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
:D TYSM

Laurenleakan

  • Member
  • Posts: 309
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.

Did you know?

Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.

Did you know?

Your heart beats over 36 million times a year.

Did you know?

Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.

Did you know?

About 60% of newborn infants in the United States are jaundiced; that is, they look yellow. Kernicterus is a form of brain damage caused by excessive jaundice. When babies begin to be affected by excessive jaundice and begin to have brain damage, they become excessively lethargic.

Cumulative Standard Normal Distribution Cumulative Standard Normal Distribution
Hurricane Structure Hurricane Structure
How self-complementarity dictates the tertiary structure of tRNA How self-complementarity dictates the tertiary structure of tRNA
Structure of vitamin B12 Structure of vitamin B12
Structure of E. coli ribonucleoside diphosphate reductase Structure of E. coli ribonucleoside diphosphate reductase
The homotetrameric structure of the lac repressor protein The homotetrameric structure of the lac repressor protein
Video: Dissociative Disorders (Part 2)

For a complete list of videos, visit our video library