Which bacterial shape is the most common?

a. sphere

b. spiral

c. rod

d. cube

i need it asap

The right option is; C. rod

Bacteria are unicellular, prokaryotic (cells with no true nucleus) microorganisms. Bacteria have various shape, size and structure. The three major shapes are; the sphere (coccus), the rod (bacillus) and the spiral (vibrio). The rod is the most common bacterial shape. Examples of rod shaped bacteria include; Bacillus cereus, Corynebacterium diphtheria and Coxiella burnetii.

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.