The Necessary Substances That a Cell Can't Make on Its

question 13

Multiple Choice

The necessary substances that a cell can't make on its own are called

• A) amino acids.
• B) nitrogenous bases.
• C) growth factors.
• D) carbohydrates.
• E) vitamins.

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Definitions:

Lophotrochozoa

A branch of the protostomes that includes the flatworms, nemerteans (proboscis worms), mollusks, annelids, and the lophophorate phyla.

Ecdysozoa

A branch of the protostomes that includes animals that molt, such as the rotifers, nematodes, and arthropods.

Protostomes

A group in the animal kingdom characterized by the mouth developing before the anus during embryonic development.

Coelom

A fluid-filled body cavity found in most multicellular animals that is lined by tissue derived from mesoderm.