Chemotaxis is the ability of what to do?

• A. Process of cell division
• B. Inflammatory swelling
• C. Phagocytosis
• D. Ability of chemical to attract cells

Answer: (D)

Chemotaxis is the movement of cells toward higher concentrations of a chemical signal. This process allows cells, especially immune cells, to follow a chemical gradient to where they’re needed, such as at sites of infection or injury, in response to chemoattractants like chemokines. The option describing the chemical’s ability to attract cells captures this concept, since chemotaxis is all about cells moving in response to chemical cues. The other options describe different cellular processes (cell division, inflammatory swelling, and phagocytosis) and do not involve directed movement toward chemical signals.