Q: Which of the following is a correct equation for aerobic cellular respiration?

$$\text{C}_6\text{H}_{12}\text{O}_6 + 6\text{O}_2 \rightarrow 6\text{CO}_2 + 6\text{H}_2\text{O} + \text{ATP}$$

Question 1

Which of the following statements best describes a key difference between prokaryotic and eukaryotic cells?

Accepted Answer

Eukaryotic cells contain membrane-bound organelles, while prokaryotic cells do not.

Question 2

A patient develops a severe systemic inflammatory response after antibiotic treatment for a gram-negative bacterial infection. What is the most likely cause?

Accepted Answer

Release of endotoxins from the outer membrane of the bacterial cell wall

Question 3

Which structure is responsible for the selective permeability of the cell membrane?

Accepted Answer

Phospholipid bilayer with embedded proteins

Question 4

Which of the following best explains why gram-negative bacteria are often more resistant to antibiotics than gram-positive bacteria?

Accepted Answer

They possess an outer membrane that restricts entry of certain drugs.

Question 5

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

Accepted Answer

Attachment to surfaces and protection from the immune system

Question 6

A scientist observes a bacterium with flagella distributed all over its surface. What is the correct term for this arrangement?

Accepted Answer

Peritrichous

Question 7

Which of the following processes requires energy in the form of ATP and moves substances against their concentration gradient?

Accepted Answer

Active transport

Question 8

Which organelle is responsible for the majority of ATP production in eukaryotic cells?

Accepted Answer

Mitochondrion

Question 9

Which of the following best describes the role of enzymes in cellular metabolism?

Accepted Answer

They act as biological catalysts, lowering the activation energy.

Question 10

A mutation in a bacterial gene leads to the production of a new enzyme that degrades penicillin. This gene is found on a plasmid. What is the most likely consequence?

Accepted Answer

The bacterium will become resistant to penicillin.

Question 11

Which of the following is a correct equation for aerobic cellular respiration?

Accepted Answer

$$	ext{C}_6	ext{H}_{12}	ext{O}_6 + 6	ext{O}_2 ightarrow 6	ext{CO}_2 + 6	ext{H}_2	ext{O} + 	ext{ATP}$$

Question 12

Which of the following best describes the process of osmosis?

Accepted Answer

Movement of water from an area of low solute concentration to high solute concentration across a selectively permeable membrane

Question 13

Which of the following is true about the genetic material in prokaryotic cells?

Accepted Answer

It is typically a single circular DNA molecule.

Question 14

Which of the following is a correct description of facilitated diffusion?

Accepted Answer

It uses protein carriers to move molecules down their concentration gradient.

Question 15

Which of the following is a function of the Golgi apparatus?

Accepted Answer

Modification, sorting, and packaging of proteins

Question 16

Which process is responsible for the transfer of genetic material from one bacterium to another via a virus?

Accepted Answer

Transduction

Question 17

Which of the following best describes the function of lysosomes?

Accepted Answer

Digest substances within the cell

Question 18

During which phase of the cell cycle does DNA replication occur?

Accepted Answer

S phase

Question 19

Which of the following is a correct description of the central dogma of molecular biology?

Accepted Answer

DNA is transcribed into RNA, which is then translated into protein.

Question 20

Which of the following best explains why biofilms are a concern in healthcare settings?

Accepted Answer

Biofilms protect bacteria from antibiotics and immune responses, making infections harder to treat.

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