The Number of Different Types of Organisms Found on Earth

question 22

Multiple Choice

The number of different types of organisms found on Earth is a result of

• A)continental drift.
• B)Darwin's theories.
• C)speciation.
• D)common descent.

Understand the role and function of social media in enhancing e-commerce, referred to as social commerce.

Understand major labor laws and their impacts on relationships between unions, employees, and employers.

Identify various types of union shops and their legal statuses.

Recognize the rights of employees under labor laws.

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Definitions:

Ras Proteins

A group of small G proteins, named by their discovery in rat sarcoma cancer cells; important in many signaling pathways.

Cyclic Adenosine

A cyclic form of adenosine monophosphate important in intracellular signaling processes.

Serotonin

A neurotransmitter of the biogenic amine group; important in mood and helps regulate the sleep–wake cycle.

Dopamine

A neurotransmitter of the biogenic amine group; important in motor function.