This topic contains a solution. Click here to go to the answer

Author Question: Considering anemia, what effect do vitamin B12 and folate deficiencies have on red blood cells? ... (Read 71 times)

sarasara

  • Hero Member
  • *****
  • Posts: 521
Considering anemia, what effect do vitamin B12 and folate deficiencies have on red blood cells?
 
  a. They are unable to differentiate into erythrocytes.
  b. They contain malformed hemoglobin molecules.
  c. O2-carrying capacity is decreased.
  d. Their life span is shorter.

Question 2

A 57-year-old male presents to his primary care provider for red face, hands, feet, ears, and headache and drowsiness. A blood smear reveals an increased number of erythrocytes, indicat-ing:
 
  a. polycythemia vera (PV).
  b. leukemia.
  c. sideroblastic anemia.
  d. hemosiderosis.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

juwms

  • Sr. Member
  • ****
  • Posts: 337
Answer to Question 1

ANS: D
These deficiencies lead to defective erythrocytes that die prematurely, which decreases their numbers in the circulation, causing anemia. These deficiencies do not cause the RBCs to lack differentiation, contain malformed hemoglobin, or experience diminished O2-carrying capacity.

Answer to Question 2

ANS: A
PV is characterized by excessive proliferation of erythrocyte precursors in the bone marrow. Leukemia is not manifested by changes in erythrocytes. Sideroblastic anemia is characterized by sideroblastic rings. Hemosiderosis is iron overload.




sarasara

  • Member
  • Posts: 521
Reply 2 on: Jun 25, 2018
Excellent


hramirez205

  • Member
  • Posts: 345
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

 

Did you know?

The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

Did you know?

Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.

Did you know?

Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.

Did you know?

Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

Did you know?

Individuals are never “cured” of addictions. Instead, they learn how to manage their disease to lead healthy, balanced lives.

For a complete list of videos, visit our video library