Question

types of bacteria

group	shape	associated disease
bacillus	rod shaped	y
spirillum	spiral	cholera

which best describes x and y?
○ x = spherical; y = e. coli
○ x = comma shaped; y = whooping cough
○ x = oval shaped; y = s. aureus
○ x = rod shaped; y = pneumonia

Explanation:

• Coccus bacteria: These are spherical in shape. For example, the bacteria that cause strep - throat (Streptococcus) are coccus bacteria.
• Bacillus bacteria: These are rod - shaped. E. coli is a well - known rod - shaped (bacillus) bacterium. Whooping cough is caused by a coccobacillus (not a typical bacillus in the strict rod - shaped sense for the purpose of this question). S. aureus is a coccus (spherical) bacterium. Pneumonia can be caused by both cocci (e.g., Streptococcus pneumoniae) and other types, but it is not the typical disease associated with a general rod - shaped (bacillus) description in the context of this basic bacteria - type classification.

Answer:

X = Spherical; Y = E. coli