« previous next »

Author Question: In the neurotransplantation experiment by Ralph and colleagues, the suprachiasmatic nuclei (SCN) ... (Read 41 times)

khang

  • Hero Member
  • *****
  • Posts: 569
on: Jun 22, 2018
In the neurotransplantatio n experiment by Ralph and colleagues,
 
  the suprachiasmatic nuclei (SCN) were transplanted from the fetuses of mutant hamsters that had abnormally brief free-running sleep-wake cycles into normal adult hamsters whose sleep-wake cycles had been abolished by SCN lesions. The transplants initiated __________ sleep-wake cycles in the recipients.
  A) 24-hour
  B) 24-hour free-running
  C) 25.5-hour free-running
  D) 20-hour free-running
  E) reversed

Question 2

There is good evidence that the internal circadian clock is located in the
 
  A) suprachiasmatic nuclei.
  B) raph nuclei.
  D). basal forebrain.
  E) optic nerves.C) caudal reticular formation.


LP

  • Sr. Member
  • ****
  • Posts: 302
Reply #1 on: Jun 22, 2018
Answer to Question 1

Answer: D

Answer to Question 2

Answer: A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.

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?

Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.

Did you know?

In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.

Did you know?

Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.

Aerial and close-up views of a large biodiversity experiment in Cedar Creek, Minnesota. Each of the Aerial and close-up views of a large biodiversity experiment in Cedar Creek, Minnesota. Each of the
Aerial and close-up views of a large biodiversity experiment in Cedar Creek, Minnesota. Each of the Aerial and close-up views of a large biodiversity experiment in Cedar Creek, Minnesota. Each of the
The Meselson-Stahl Experiment p1 The Meselson-Stahl Experiment p1
Mixing schematic Diagram CHE 415 unit operations experiment apparatus Mixing schematic Diagram CHE 415 unit operations experiment apparatus
Counterbalancing in the Predator Experiment Counterbalancing in the Predator Experiment
The Taylor–Woods–Hughes experiment The Taylor–Woods–Hughes experiment
Video: How proteins function? How do proteins work?

For a complete list of videos, visit our video library