Question

fill in the blank question movement of a bacterial cell toward an attractant or away from a repellent is termed.

Explanation:

In biology (a subfield of Natural Science), the movement of a bacterial cell toward an attractant (like nutrients) or away from a repellent (like toxins) is defined as chemotaxis. This is a key concept in microbial behavior, where bacteria sense chemical gradients and move accordingly.

Answer:

chemotaxis