Multiple choice Which of the following bacteria is comma shaped? Lactobacillus Streptococcus Vibrio Sarcina Reveal answer Fill a bubble to check yourself C Correct answer Explanation Vibrio bacteria are characterized by their distinctive comma or curved rod shape. Lactobacillus is rod-shaped, Streptococcus is spherical (cocci), and Sarcina forms cube-like clusters of 8 cells.