« previous next »

Author Question: Why is heme located inside a globin chain pocket surrounded by hydrophobic amino acids? a. ... (Read 126 times)

genevieve1028

  • Hero Member
  • *****
  • Posts: 601
on: Jun 25, 2018
Why is heme located inside a globin chain pocket surrounded by hydrophobic amino acids?
 
  a. Protects iron from being oxidized to its ferric form
  b. Necessary for oxygen release to tissues
  c. Makes hemoglobin insoluble
  d. Keeps heme from being dissolved

Question 2

Where is heme produced?
 
  a. Liver
  b. Macrophages in the bone marrow
  c. Red blood cell (RBC) precursors in the bone marrow
  d. Mature RBCs in peripheral circulation


kusterl

  • Sr. Member
  • ****
  • Posts: 315
Reply #1 on: Jun 25, 2018
Answer to Question 1

ANS: A
This arrangement helps keep iron in the divalent (ferrous) form regardless of whether or not it is carrying oxygen. This is critical for hemoglobin's ability to reversibly bind oxygen.

Answer to Question 2

ANS: C
Heme is produced in RBC precursors in the bone marrow.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.

Did you know?

Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.

Did you know?

More than nineteen million Americans carry the factor V gene that causes blood clots, pulmonary embolism, and heart disease.

Did you know?

In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.

Did you know?

Medication errors are more common among seriously ill patients than with those with minor conditions.

Pocket gophers and ecosystem structure (data from Huntly and Inouye 1988). Pocket gophers and ecosystem structure (data from Huntly and Inouye 1988).
Inside of the Human Immunodeficiency Virus (HIV) Inside of the Human Immunodeficiency Virus (HIV)
The Chain of Survival. The Chain of Survival.
Inorganic Acids (Oxyacids) and Their Properties Inorganic Acids (Oxyacids) and Their Properties
Amino Acids Grouped by Their Side Chain Properties Amino Acids Grouped by Their Side Chain Properties
Heme Protein Heme Protein
Video: Effect of blood chemistry - stimuli, hyperventilation response and hypoventilation response

For a complete list of videos, visit our video library