Differences in Which of the Following Chemical Characteristics Are Responsible

question 49

Multiple Choice

Differences in which of the following chemical characteristics are responsible for the uniqueness of individuals organisms?

• A) elemental composition from organism to organism
• B) types and relative amounts of organic molecules synthesized by each organism
• C) sizes of the organic molecules in each organism
• D) types of inorganic compounds present in each organism

---

Definitions:

Pituitary Gland

A small, pea-sized gland located at the base of the brain, responsible for the production and secretion of hormones that regulate many bodily functions.

Gastrulation

An early embryonic process in which the single-layered blastula is reorganized into a multilayered structure known as the gastrula, forming the basic body plan.

Ectoderm

The outermost layer of cells or tissue of an embryo in early development, giving rise to the outer layer of skin, nails, hair, and nervous system.

Epiblast

A layer of cells in the early embryo from which all the various tissues and organs of the body will eventually develop.