Question 1

Which of the following is a feature unique to eukaryotic cells and not found in prokaryotic cells?

Accepted Answer

Membrane-bound organelles

Question 2

A scientist observes a cell with a thick peptidoglycan layer and no outer membrane. Which type of cell wall does this cell most likely possess?

Accepted Answer

Gram-positive

Question 3

Which cellular structure is responsible for the movement of bacteria and can be classified into five different styles and names?

Accepted Answer

Flagella

Question 4

During Gram staining, which cell type retains the crystal violet stain and appears purple under the microscope?

Accepted Answer

Gram-positive

Question 5

Which of the following statements about endospores is TRUE?

Accepted Answer

Endospores allow bacteria to survive harsh environmental conditions.

Question 6

Which process describes the movement of molecules from an area of high concentration to an area of low concentration, without the use of energy?

Accepted Answer

Simple diffusion

Question 7

In bacterial metabolism, which reaction is considered catabolic?

Accepted Answer

Breakdown of glucose into smaller molecules

Question 8

Which molecule acts as the final electron acceptor in aerobic respiration?

Accepted Answer

Oxygen ($$O_2)$$

Question 9

How many FADH$$_2$$ molecules are produced from the degradation of one molecule of glucose ($$C_6H_{12}O_6$) during the citric acid cycle?

Accepted Answer

$$2$$

Question 10

Which of the following best describes the function of a bacterial capsule?

Accepted Answer

Protects against host immune response

Question 11

A bacterial cell is exposed to a competitive inhibitor. What is the most likely effect on the enzyme's activity?

Accepted Answer

The inhibitor competes with the substrate for the active site.

Question 12

Which of the following is TRUE regarding Gram-negative bacteria?

Accepted Answer

They are generally more resistant to antibiotics due to their outer membrane.

Question 13

Which type of transport requires energy and moves molecules against their concentration gradient?

Accepted Answer

Active transport

Question 14

Which of the following is a function of pili in bacteria?

Accepted Answer

Conjugation

Question 15

Which statement about the theory of spontaneous generation is correct?

Accepted Answer

It was disproven by experiments such as those by Louis Pasteur.

Question 16

When naming a microorganism, which part comes first and is capitalized?

Accepted Answer

Genus

Question 17

Which of the following best explains why enzymes are necessary for most chemical reactions in cells?

Accepted Answer

Enzymes lower the activation energy, allowing reactions to occur faster.

Question 18

Which of the following is a correct description of an extremophile?

Accepted Answer

An archaeon that thrives in extreme environments.

Question 19

Which of the following is TRUE about the electron transport chain in bacteria?

Accepted Answer

It uses a series of electron carriers to generate a proton gradient.

Question 20

Which of the following reactions is exergonic?

Accepted Answer

Breakdown of ATP to ADP and $$P_i$$

Microbiology Study Guide: Prokaryotic & Eukaryotic Cells, Cell Structure, Staining, Metabolism, and Taxonomy

Study Guide - Practice Questions