Nokea
Streptococcus type A can cause which of the following illnesses?
- A. Strep throat
- B. Ear infection
- C. Scarlet fever
- D. Gas gangrene
- E. Severe diarrhea
- F. Bloody diarrhea
- G. Heart valve damage
Correct Answer: A,C,G
Rationale: Streptococcus pyogenes (Group A Streptococcus) causes strep throat, scarlet fever, and can lead to complications like rheumatic fever, which damages heart valves. Ear infections, gas gangrene, and diarrhea are caused by other pathogens.
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Types of bacteria include
- A. Helminths and fungi.
- B. Cocci, bacilli, and spirilla.
- C. Rickettsia.
- D. Vectors and protozoa.
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.
Match the following pathogens with their descriptions: Protozoa
- A. One-celled microorganisms classified by their shapes
- B. May be made up of one or more cells; enter the human body through cuts or cracks in the skin
- C. Rod-shaped bacteria that appear in chains
- D. Type of bacteria often spread through vectors
- E. Tiny parasites that live within cells of hosts and reproduce there
- F. Parasitic worms that can inhabit the digestive tract of humans
- G. Single-celled animals that live in water and cause intestinal illnesses when ingested
Correct Answer: G
Rationale: Protozoa are single-celled organisms that can cause intestinal illnesses, such as those from contaminated water (e.g., Giardia).
Match the following pathogens with their descriptions: Rickettsia
- A. One-celled microorganisms classified by their shapes
- B. May be made up of one or more cells; enter the human body through cuts or cracks in the skin
- C. Rod-shaped bacteria that appear in chains
- D. Type of bacteria often spread through vectors
- E. Tiny parasites that live within cells of hosts and reproduce there
- F. Parasitic worms that can inhabit the digestive tract of humans
- G. Single-celled animals that live in water and cause intestinal illnesses when ingested
Correct Answer: D
Rationale: Rickettsia are bacteria often transmitted by vectors like ticks or fleas, as seen in diseases like Rocky Mountain spotted fever.
Which type of pathogen causes malaria?
- A. Helminths
- B. Herpes simplex
- C. Protozoans
- D. Candida albicans
Correct Answer: C
Rationale: Malaria is caused by Plasmodium, a protozoan parasite transmitted by Anopheles mosquitoes.
Match the following pathogens with their descriptions: Viruses
- A. One-celled microorganisms classified by their shapes
- B. May be made up of one or more cells; enter the human body through cuts or cracks in the skin
- C. Rod-shaped bacteria that appear in chains
- D. Type of bacteria often spread through vectors
- E. Tiny parasites that live within cells of hosts and reproduce there
- F. Parasitic worms that can inhabit the digestive tract of humans
- G. Single-celled animals that live in water and cause intestinal illnesses when ingested
Correct Answer: E
Rationale: Viruses are tiny parasites that invade host cells to reproduce, as they cannot replicate independently.