Chapter 14: Medical Asepsis and Infection Control - Nurselytic

Correct Answer: B

Rationale: Bacteria are classified by shape, including cocci (spherical), bacilli (rod-shaped), and spirilla (spiral). Rickettsia is a specific genus of bacteria, not a shape category. Helminths, fungi, vectors, and protozoa are not bacteria.

Correct Answer: D

Rationale: Rickettsia are bacteria often transmitted by vectors like ticks or fleas, as seen in diseases like Rocky Mountain spotted fever.

Correct Answer: E

Rationale: Viruses are tiny parasites that invade host cells to reproduce, as they cannot replicate independently.

Correct Answer: G

Rationale: Protozoa are single-celled organisms that can cause intestinal illnesses, such as those from contaminated water (e.g., Giardia).

Correct Answer: B

Rationale: Fungi, which can be unicellular or multicellular, often enter through skin breaks, causing infections like athlete's foot or candidiasis.