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 99 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
Great answer, keep it coming :)

duy1981999

  • Member
  • Posts: 341
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.

Did you know?

The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Did you know?

Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.

Did you know?

Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.

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
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 ...
Humid Continental Climates with Severe Winters (D) Humid Continental Climates with Severe Winters (D)
Flow scattergrams showing results on the top set from a healthy donor and on the bottom set from a ... Flow scattergrams showing results on the top set from a healthy donor and on the bottom set from a ...
Results from Kliegl's study show that older adults can learn complex information-processing Results from Kliegl's study show that older adults can learn complex information-processing
The expected results of two generations of semiconservative replication The expected results of two generations of semiconservative replication
Video: Cardiac Cycle (Part 2 of 4)

For a complete list of videos, visit our video library