Which of These Does NOT Involve a Chemical Change

question 11

Multiple Choice

Which of these does NOT involve a chemical change?

• A)Cocaine causes the release of norepinephrine from nerve cells.
• B)Red delicious apples taste sweet.
• C)Antacids often help an upset stomach.
• D)Mercury is used in barometers because it has a high density.

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Definitions:

Phenotypic Plasticity

The ability of an organism to change its phenotype in response to changes in the environment.

Genetic Variation

The diversity of gene frequencies within a population, which drives evolution by enabling adaptation to changing environments.

Heritability

The proportion of observed variation in a particular trait, within a population, that can be attributed to inherited genetic factors as opposed to environmental influences.

Genome Wide Association

A study approach that involves rapidly scanning markers across complete sets of DNA, or genomes, of many people to find genetic variations associated with a particular disease.