« previous next »

Author Question: Why is heme located inside a globin chain pocket surrounded by hydrophobic amino acids? a. ... (Read 107 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?

Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).

Did you know?

The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

Did you know?

During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.

Did you know?

Blastomycosis is often misdiagnosed, resulting in tragic outcomes. It is caused by a fungus living in moist soil, in wooded areas of the United States and Canada. If inhaled, the fungus can cause mild breathing problems that may worsen and cause serious illness and even death.

Did you know?

The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.

Heme consists of a complex organic ring structure, protoporphyrin Heme consists of a complex organic ring structure, protoporphyrin
The primary windings are inside the secondary windings on this General Motors coil. The primary windings are inside the secondary windings on this General Motors coil.
Amino acid conversion to the corresponding a-keto acid by transamination or oxidative deamination Amino acid conversion to the corresponding a-keto acid by transamination or oxidative deamination
The uracil-binding pocket of human UNG The uracil-binding pocket of human UNG
Annotation of a DNA sequence containing part of the human globin gene Annotation of a DNA sequence containing part of the human globin gene
From DNA to RNA to Amino Acids From DNA to RNA to Amino Acids
Video: hGH, Thyroid hormones & Aldosterone

For a complete list of videos, visit our video library