The Proteins PER and TIM,originally Discovered in Insect but Now

question 93

Multiple Choice

The proteins PER and TIM,originally discovered in insect but now found in mammals also,influence circadian rhythms by ____.​

• A)building up during the day and declining during sleep
• B)​being transformed into melatonin
• C)​stimulating and inhibiting (respectively) the release of acetylcholine in the cerebral cortex
• D)providing negative feedback from the muscles to the neurons that innervate them

---

Definitions:

Collection Time

The average amount of time it takes for a business to receive payments owed by its customers after a sale has been made, indicative of a company's efficiency in collecting accounts receivable.

Short-term Securities

Securities that typically mature in one year or less, often used for investment with lower risk and short-duration goals.

Zero Balance Accounts

Bank accounts that automatically maintain a zero balance by moving funds from a master account in an amount only large enough to cover checks presented.

Master Account

A primary account that is used to manage multiple sub-accounts under a single umbrella, often for purposes of consolidation and easier management.