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

Author Question: A congenital deficiency of transferrin results in: a. Severe anemia b. Reduced absorption of ... (Read 51 times)

shenderson6

  • Hero Member
  • *****
  • Posts: 573
on: Jun 25, 2018
A congenital deficiency of transferrin results in:
 
  a. Severe anemia
  b. Reduced absorption of iron
  c. Increased excretion of iron
  d. Decreased storage of iron in organs

Question 2

Heme is composed of iron and:
 
  a. Globin chains
  b. Oxygen
  c. Methemoglobin
  d. Protoporphyrin IX


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

flexer1n1

  • Sr. Member
  • ****
  • Posts: 373
Reply #1 on: Jun 25, 2018
Answer to Question 1

ANS: A
Transferrin is the carrier protein for iron. If it is deficient, then iron cannot be effectively transported to developing RBCs (or storage), and a severe iron deficient anemia develops. When transferrin is deficient or absent, iron is absorbed through the intestine and stored in the liver, pancreas, and spleen, but very little gets to the bone marrow.

Answer to Question 2

ANS: D
Iron is incorporated into protoporphyrin IX in the mitochondria of a developing red blood cell (RBC) to form heme. Oxygen binds reversibly to the iron in heme provided that iron is in the ferrous (divalent, reduced) state. Globin chains are part of the hemoglobin molecule; four of them exist per molecule, each containing a heme group. Methemoglobin is hemoglobin in which the iron is oxidized to the ferric (trivalent) form; it cannot bind oxygen.


shenderson6

  • Member
  • Posts: 573
Reply 2 on: Jun 25, 2018
Gracias!

helenmarkerine

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

« previous next »
 

Did you know?

Glaucoma is a leading cause of blindness. As of yet, there is no cure. Everyone is at risk, and there may be no warning signs. It is six to eight times more common in African Americans than in whites. The best and most effective way to detect glaucoma is to receive a dilated eye examination.

Did you know?

Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.

Did you know?

Women are 50% to 75% more likely than men to experience an adverse drug reaction.

Did you know?

Illness; diuretics; laxative abuse; hot weather; exercise; sweating; caffeine; alcoholic beverages; starvation diets; inadequate carbohydrate consumption; and diets high in protein, salt, or fiber can cause people to become dehydrated.

Did you know?

The oldest recorded age was 122. Madame Jeanne Calment was born in France in 1875 and died in 1997. She was a vegetarian and loved olive oil, port wine, and chocolate.

Severe atherosclerotic plaque in an artery. Severe atherosclerotic plaque in an artery.
Effect of pH on drug absorption: (a) A weak acid such as aspirin (ASA) is in a nonionized form in an ... Effect of pH on drug absorption: (a) A weak acid such as aspirin (ASA) is in a nonionized form in an ...
The anatomical distortion of the structure of RBCs in sickle cell anemia affects its normal function ... The anatomical distortion of the structure of RBCs in sickle cell anemia affects its normal function ...
Position of the fetus in late pregnancy results in stresses on the mother’s body. Position of the fetus in late pregnancy results in stresses on the mother’s body.
Metabolic consequences of adenosine deaminase (ADA) deficiency Metabolic consequences of adenosine deaminase (ADA) deficiency
phylogenetic results using the TCF7L2 transcripting mRNA sequence for the 4 listed taxa phylogenetic results using the TCF7L2 transcripting mRNA sequence for the 4 listed taxa
Video: Decubitus Ulcer

For a complete list of videos, visit our video library