Author Question: Neural activity in the suprachiasmatic nuclei in rats is A) greatest during the winter months. ... (Read 46 times)

pane00 · **on:** Jun 22, 2018

Neural activity in the suprachiasmatic nuclei in rats is

A) greatest during the winter months.
B) lowest during the winter months.
C) constant throughout a 24-hour period.
D) higher at night and lower during the day.
E) higher during the day and lower at night.

Question 2

The ticking of a clock cell within the SCN appears to involve

A) feedback loops of intracellular protein production.
B) the rhythmic opening of sodium channels in the membrane.
C) interactions between two adjacent clock cells.
D) the rhythmic opening of calcium channels in the membrane.
E) the buildup of sodium in the clock cell over time.

ergserg · **Reply #1 on:** Jun 22, 2018

Answer to Question 1

Answer: E
Rationale: Neural activity in the suprachiasmatic nuclei in rats is higher during the day and lower at night.

Answer to Question 2

Answer: A
Rationale: The ticking of a clock cell within the SCN appears to involve feedback loops of intracellular protein production.