« previous next »

Author Question: Parkinson's disease is caused by degeneration of a pathway of neurons that releases which ... (Read 49 times)

geoffrey

  • Hero Member
  • *****
  • Posts: 880
on: Jun 22, 2018
Parkinson's disease is caused by degeneration of a pathway of neurons that releases which neurotransmitter?
 
  a. acetylcholine
  b. substance P
 c. serotonin
 d. dopamine

Question 2

An adult male sparrow sings its normal song ____.
 
  a. if he hears the song during a sensitive period early in his life
 b. only when he hears a female bird singing
 c. if his own species' song is the first song he hears when young
 d. regardless of whether or not he has ever heard his species' song from another bird


ttt030911

  • Sr. Member
  • ****
  • Posts: 315
Reply #1 on: Jun 22, 2018
Answer to Question 1

d

Answer to Question 2

a


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

geoffrey

  • Hero Member
  • *****
  • Posts: 880
Reply #2 on: Jun 22, 2018
Thank you!


ttt030911

  • Sr. Member
  • ****
  • Posts: 315
Reply #3 on: Jun 22, 2018
Happy to help


« previous next »
 

Did you know?

A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.

Did you know?

Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.

Did you know?

When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

Did you know?

The average older adult in the United States takes five prescription drugs per day. Half of these drugs contain a sedative. Alcohol should therefore be avoided by most senior citizens because of the dangerous interactions between alcohol and sedatives.

Did you know?

More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.

Drugs for Parkinson’s Disease Drugs for Parkinson’s Disease
Uticaria, a skin rash caused by type I hypersensitivity. Uticaria, a skin rash caused by type I hypersensitivity.
Patients with celiac disease must maintain a gluten-free diet. Many gluten-free items are widely ... Patients with celiac disease must maintain a gluten-free diet. Many gluten-free items are widely ...
A pathway for homologous recombination to repair DNA double-strand breaks A pathway for homologous recombination to repair DNA double-strand breaks
Variable expression of yellow phenotype in mice caused by diet-related epigenetic changes in the gen Variable expression of yellow phenotype in mice caused by diet-related epigenetic changes in the gen
Major Causes of Death from Infectious Disease Major Causes of Death from Infectious Disease
Video: Structures that affect circulation - kidneys and blood volume and skeletal muscle pumping

For a complete list of videos, visit our video library