« previous next »

Author Question: What substances in segmented neutrophils are important for intracellular killing of bacteria? a. ... (Read 59 times)

viki

  • Hero Member
  • *****
  • Posts: 525
on: Jun 25, 2018
What substances in segmented neutrophils are important for intracellular killing of bacteria?
 
  a. Alkaline phosphatase and halides
  b. Myeloperoxidase and superoxide
  c. Collagenase and hydrogen peroxide
  d. Acid phosphatase and anions

Question 2

CD34 is an antigen found on which one of the following cells?
 
  a. Myeloblast
  b. Segmented neutrophil
  c. Eosinophil
  d. Lymphocyte


cici

  • Sr. Member
  • ****
  • Posts: 325
Reply #1 on: Jun 25, 2018
Answer to Question 1

ANS: B
Bacteria killing is a complex mechanism, requiring activation of the neutrophil, ingestion of the bacterium, and incorporation into a phagosome. Cytoplasmic granules fuse with the lysosome and dump their contents. Myeloperoxidase, halides, hydrogen peroxide, and the formation of superoxide and oxygen radicals are all instrumental for killing. Also critical for killing is activation of proteinases such as cathepsin G.

Answer to Question 2

ANS: A
CD34 is found on the myeloblast and also the promyelocyte, but it is downregulated as the cell continues to mature and is not found on mature cells of any lineage.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.

Did you know?

Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.

Did you know?

In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.

Did you know?

People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.

Did you know?

The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.

Alexander Fleming photographed in his lab where he observed the natural competition between a fungus Alexander Fleming photographed in his lab where he observed the natural competition between a fungus
Bacteria Bacteria
Biosynthetic Families of Amino Acids in Bacteria and Plants Biosynthetic Families of Amino Acids in Bacteria and Plants
Band and segmented neutrophils. Band and segmented neutrophils.
The hazmat training pyramid. It is important to train from the ground up, starting with a firm grasp ... The hazmat training pyramid. It is important to train from the ground up, starting with a firm grasp ...
Remote sensing and GIS are important tools Remote sensing and GIS are important tools
Video: Energy inputs and release in glycolysis Animation

For a complete list of videos, visit our video library