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

Author Question: T cells and B cells can be activated only by A) pathogens. B) interleukins, interferons, and ... (Read 113 times)

Kikoku

  • Hero Member
  • *****
  • Posts: 540
on: Feb 28, 2019
T cells and B cells can be activated only by
 A) pathogens.
  B) interleukins, interferons, and colony-stimulating factors.
  C) cells infected with viruses, bacteria, or cancer cells.
  D) exposure to a specific antigen at a specific site in a plasma membrane.
  E) disease-causing agents.

Question 2

The pyramidal system provides
 A) voluntary control over skeletal muscles.
  B) voluntary control over smooth muscles.
  C) involuntary control over skeletal muscles.
  D) involuntary control over smooth muscles.
  E) involuntary control over cardiac muscle.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

lauravaras

  • Sr. Member
  • ****
  • Posts: 347
Reply #1 on: Feb 28, 2019
Answer to Question 1

D

Answer to Question 2

A


Kikoku

  • Hero Member
  • *****
  • Posts: 540
Reply #2 on: Feb 28, 2019
TY


lauravaras

  • Sr. Member
  • ****
  • Posts: 347
Reply #3 on: Feb 28, 2019
You're welcome


« previous next »
 

Did you know?

Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.

Did you know?

In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.

Did you know?

Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.

Did you know?

In the United States, congenital cytomegalovirus causes one child to become disabled almost every hour. CMV is the leading preventable viral cause of development disability in newborns. These disabilities include hearing or vision loss, and cerebral palsy.

Did you know?

Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.

Action of aldosterone on distal convoluted tubule epithelial cells. Action of aldosterone on distal convoluted tubule epithelial cells.
Transfection in Eukaryotic Cells Transfection in Eukaryotic Cells
Embryonic cells form the placenta Embryonic cells form the placenta
The macula densa and the juxtaglomerular (JG) cells. Osmoreceptors in the macula densa sense low ... The macula densa and the juxtaglomerular (JG) cells. Osmoreceptors in the macula densa sense low ...
Common Bacterial Pathogens Common Bacterial Pathogens
Plasmodium parasites (arrow) attacking and infecting red blood cells. Infection by Plasmodium causes Plasmodium parasites (arrow) attacking and infecting red blood cells. Infection by Plasmodium causes
Video: Resting membrane potential - electrical polarity and maintenance requirements

For a complete list of videos, visit our video library