« previous next »

Author Question: Parkinson's disease is caused by degeneration of a pathway of neurons that releases which ... (Read 84 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?

Hypertension is a silent killer because it is deadly and has no significant early symptoms. The danger from hypertension is the extra load on the heart, which can lead to hypertensive heart disease and kidney damage. This occurs without any major symptoms until the high blood pressure becomes extreme. Regular blood pressure checks are an important method of catching hypertension before it can kill you.

Did you know?

Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.

Did you know?

Drug-induced pharmacodynamic effects manifested in older adults include drug-induced renal toxicity, which can be a major factor when these adults are experiencing other kidney problems.

Did you know?

Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%

Did you know?

Critical care patients are twice as likely to receive the wrong medication. Of these errors, 20% are life-threatening, and 42% require additional life-sustaining treatments.

The Lyme disease tick The Lyme disease tick
A single base substitution leading to a single amino acid substitution in the hemoglobin beta chain A single base substitution leading to a single amino acid substitution in the hemoglobin beta chain
"Neurons" and "Neuroglia" "Neurons" and "Neuroglia"
Structural Classification of Neurons Structural Classification of Neurons
Preventing the Spread of Coronavirus Disease 2019 Preventing the Spread of Coronavirus Disease 2019
Crown gall disease caused by Agrobacterium via plant transformation Crown gall disease caused by Agrobacterium via plant transformation
Video: Conduction of action potentials

For a complete list of videos, visit our video library