Ions with a Positive Charge Are Called

question 77

Multiple Choice

Ions with a positive charge are called

• A) anions.
• B) bases.
• C) metabolites.
• D) cations.
• E) acids.

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Definitions:

Collar Cells

Specialized cells found in sponges (Porifera) that have a collar-like structure and are involved in water filtration and nutrient capture.

Microvilli

Tiny hair-like projections on the surface of some cells that increase the cell's surface area for absorption or secretion.

Phagocytize

The process by which certain living cells called phagocytes ingest or engulf other cells or particles.

Cnidarians

Phylum of animals that have stinging cells called cnidocytes, two tissue layers, and radial symmetry; include hydras and jellyfish.