-The Illustration Depicts Five Types of Intercellular Chemical Signals

question 76

Multiple Choice

-The illustration depicts five types of intercellular chemical signals. What kind of signal does "D" represent?

• A) paracrine
• B) neurotransmitter
• C) neuropeptide
• D) autocrine
• E) endocrine

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Definitions:

Phenylalanine

An essential amino acid required for the biosynthesis of proteins, not synthesized by the human body and obtained through diet.

Metabolize

The chemical process by which the body breaks down substances to provide energy or use them in growth and repair of tissues.

Genotype

describes the genetic makeup of an organism in terms of the alleles it carries for a particular trait, which can influence its phenotype or outward appearance.

Specific Genes

Particular segments of DNA that are responsible for the inheritance of distinct traits.