Emerging Viruses Arise by ________

question 39

Multiple Choice

Emerging viruses arise by ________.

• A) mutation of existing viruses
• B) the spread of existing viruses to new host species
• C) the spread of existing viruses more widely within their hostspecies
• D) all of the above

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Definitions:

Branched Alkane

A type of alkane hydrocarbon with a tree-like structure, as opposed to linear alkanes, which improves fuel quality in terms of octane rating.

Methylpropane

Methylpropane, also known as isobutane, is a branched-chain alkane with the formula C4H10, used as a refrigerant and a propellant in aerosols.

Molecular Formula

A representation of the types and numbers of atoms present in a molecule, showing the exact composition of that molecule.

Branched Alkanes

Hydrocarbons that contain a main chain of carbon atoms with one or more side chains or branches, affecting their physical and chemical properties.