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 126 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
:D TYSM

amit

  • Member
  • Posts: 364
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%

Did you know?

The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.

Did you know?

Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.

Did you know?

Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.

Did you know?

Children of people with alcoholism are more inclined to drink alcohol or use hard drugs. In fact, they are 400 times more likely to use hard drugs than those who do not have a family history of alcohol addiction.

Reduced mobility in late adulthood often results in more limited activities and smaller social ... Reduced mobility in late adulthood often results in more limited activities and smaller social ...
Results Seen in Mono-Diff Tests Results Seen in Mono-Diff Tests
Absorption Methods in the Small Intestine Absorption Methods in the Small Intestine
During a period of high power demand, the voltage output of the power company is reduced by ... During a period of high power demand, the voltage output of the power company is reduced by ...
Test-Cross Results from Mendel’s Experiments Test-Cross Results from Mendel’s Experiments
Video: Neural regulation of mechanical digestion- CNS voluntary, ANS & ENS controlled involuntary movements

For a complete list of videos, visit our video library