Why Are Viruses Referred to as Obligate Parasites

question 20

Multiple Choice

Why are viruses referred to as obligate parasites?

• A)They cannot reproduce outside of a host cell.
• B)Viral DNA always inserts itself into host DNA.
• C)They invariably kill any cell they infect.
• D)They can incorporate nucleic acids from other viruses.
• E)They must use enzymes encoded by the virus itself.

Comprehend the realization principle and its application in revenue recognition.

Recognize the importance of economic substance over legal form in revenue recognition.

Understand the percentage-of-completion method for recognizing profits on long-term contracts.

Identify the implications of revising project cost estimates on profit recognition.

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Definitions:

Alpha Subunits

Components of G-protein coupled receptor complexes involved in transmitting signals from a wide variety of receptors into the interior of the cell.

Sympathetic Nervous System

A part of the autonomic nervous system that serves to accelerate the heart rate, constrict blood vessels, and raise blood pressure, commonly activated in response to stress or fear.

Parasympathetic Nervous System

A division of the autonomic nervous system responsible for conserving energy and promoting a state of calmness and rest.

Acetylcholine

A neurotransmitter in both the central and peripheral nervous systems that plays an important role in muscle activation, memory, and learning.