Thioglycolate Medium Contains the Following: Yeast Extract, Pancreatic Digest of Casein

question 15

Multiple Choice

Thioglycolate medium contains the following: yeast extract, pancreatic digest of casein, glucose, L-cysteine, sodium chloride, sodium thioglycolate, and agar.It is considered a complex medium because

• A)depending on their oxygen utilization pattern, organisms will grow differently on it.
• B)it has multiple ingredients for a broad range of nutrients.
• C)both yeast extract and pancreatic digest of casein are not chemically defined.
• D)thioglycolate has a carbon-sulfur bond that many microbes cannot break enzymatically.

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Definitions:

Pineal Gland

A small endocrine gland in the brain that produces melatonin, a hormone that regulates sleep-wake cycles.

Biological Clock

An internal mechanism that controls the timing of biological functions and behaviors, such as sleep, metabolism, and reproduction.

REM Sleep

A phase of sleep characterized by rapid eye movements, more dreaming, and bodily movement; considered important for emotional and cognitive restoration.

Non-REM Sleep

A phase of sleep characterized by slower brain waves and reduced eye movement, distinct from REM (Rapid Eye Movement) sleep.