Question 1

Who is credited with developing the first smallpox immunization?

Accepted Answer

Jenner

Question 2

Which scientist is known as the father of microbiology and developed the germ theory of disease?

Accepted Answer

Pasteur

Question 3

Which of the following is NOT one of the six basic categories of microorganisms described by Leeuwenhoek?

Accepted Answer

Viruses

Question 4

Which statement best describes the cell wall composition of Archaea?

Accepted Answer

Lacks peptidoglycan and is composed of other chemicals

Question 5

Which external structure is used by prokaryotic cells to transfer DNA during conjugation?

Accepted Answer

Pili

Question 6

Which type of bacterial cell wall contains teichoic acids and retains the crystal violet dye in Gram staining?

Accepted Answer

Gram-positive

Question 7

What is the main function of the bacterial capsule?

Accepted Answer

Prevents recognition by host immune system

Question 8

Which process involves the chemical modification of a substance as it is transported into a bacterial cell, trapping it inside?

Accepted Answer

Group translocation

Question 9

In the context of osmosis, what happens to a bacterial cell placed in a hypertonic solution?

Accepted Answer

It shrinks due to water loss

Question 10

Which of the following is a novel external appendage found in some Archaea, used for attachment to surfaces?

Accepted Answer

Hamus

Question 11

Which type of phosphorylation involves the transfer of a phosphate group from a phosphorylated organic compound to ADP?

Accepted Answer

Substrate-level phosphorylation

Question 12

Which factor does NOT influence the rate of enzymatic reactions?

Accepted Answer

Presence of oxygen

Question 13

What is the role of a competitive inhibitor in enzyme activity?

Accepted Answer

Fits into the active site, preventing substrate binding

Question 14

Which process is described as the partial oxidation of sugar using an organic molecule as the final electron acceptor?

Accepted Answer

Fermentation

Question 15

Which stage of cellular respiration produces the most ATP?

Accepted Answer

Electron transport chain

Question 16

Which of the following best describes an amphibiolic reaction?

Accepted Answer

A reversible reaction that can be catabolic or anabolic

Question 17

Which process allows ions to flow down their electrochemical gradient across a membrane to synthesize ATP?

Accepted Answer

Chemiosmosis

Question 18

Which of the following is a property of Gram-negative bacterial cell walls?

Accepted Answer

Contains Lipid A in the outer membrane

Question 19

Which process is responsible for the splitting of glucose into two molecules of pyruvate, producing ATP and NADH?

Accepted Answer

Glycolysis

Question 20

A patient is infected with a Gram-negative bacterium. Which component of the bacterial cell wall is most likely to cause shock if released into the bloodstream?

Accepted Answer

Lipid A

Microbiology Exam 1 Review: Foundations, Cell Structure, and Metabolism

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