Microbial Physiology MCQs with Answers

Which of the following is NOT a method of microbial locomotion?

The primary function of bacterial pili is ____.

The term "generation time" refers to ____.

The bacterial cell membrane is selectively permeable due to the presence of ____.

The Gram-negative outer membrane is mainly composed of ____.

Bacterial resistance to antibiotics can occur due to ____.

Bacteria that require high concentrations of salt for growth are called ____.

The enzyme responsible for bacterial DNA replication is ____.

The process by which bacteria break down organic compounds to obtain energy is ____.

The molecule used by bacteria to store excess carbon and energy is ____.

The bacterial structure that allows some bacteria to adhere to surfaces is ____.

Bacteria that grow optimally at pH below 5.5 are called ____.

Bacteria that live in extreme environments such as hot springs are called ____.

Bacteria that obtain energy from organic compounds and carbon from inorganic sources are called ____.

The process by which bacteria form a protective barrier to survive adverse conditions is called ____.

The process by which bacteria generate ATP using energy derived from light is called ____.

The process by which bacteria move towards or away from certain stimuli is called ____.

The process of transferring genetic material from one bacterium to another through direct cell-to-cell contact is called ____.

The process by which bacteria reproduce asexually is called ____.

Bacterial flagella are composed of ____.

The bacterial cell membrane is primarily composed of ____.

Cyanobacteria are unique among bacteria because they ____.

Which bacterial structure provides resistance to desiccation and chemicals?

The movement of substances across the bacterial cell membrane from high to low concentration without the use of energy is ____.

Bacteria that can grow in the presence or absence of oxygen but prefer oxygen if available are called ____.

Chemolithotrophs obtain energy from ____.

Bacteria that grow optimally at temperatures above 80°C are called ____.

Which bacterial structure is involved in motility?

Bacteria that require oxygen for growth but at concentrations less than atmospheric levels are called ____.

The process by which bacteria regulate the movement of water across their cell membrane is ____.

The smallest and simplest form of life is ____.

Bacteria that can live and grow in the presence or absence of oxygen are called ____.

The process by which bacteria take up DNA from their environment is called ____.

The enzyme responsible for fixing atmospheric nitrogen into ammonia is ____.

The process of converting atmospheric nitrogen into a usable form is known as ____.

The enzyme responsible for transcribing RNA from DNA in bacteria is ____.

The bacterial cell wall is mainly composed of ____.

Bacterial ribosomes are composed of ____.

The enzyme that breaks down hydrogen peroxide into water and oxygen in bacteria is ____.

During which phase of bacterial growth does the rate of growth equal the rate of death?