Question

which type of bacteria can be found in pairs, chains, squares of four, cubes of eight, or grapelike clusters?
○ coccus
○ bacillus
○ spirillum
○ pili

Explanation:

Coccus bacteria are spherical - shaped and can arrange themselves in pairs (diplococci), chains (streptococci), squares of four (tetrads), cubes of eight (sarcinae), or grapelike clusters (staphylococci). Bacillus are rod - shaped, spirillum are spiral - shaped, and pili are structures on bacteria, not a bacterial shape type.

Answer:

A. coccus