Q: Which equation correctly represents the process of cellular respiration occurring in mitochondria?

$$\mathrm{C_6H_{12}O_6$} + 6\mathrm{O_2$} \rightarrow 6\mathrm{CO_2$} + 6\mathrm{H_2O} + \text{energy}$$

Question 1

Which of the following structures is found in both prokaryotic and eukaryotic cells?

Accepted Answer

Ribosomes

Question 2

A scientist discovers a cell with DNA located in a region called the nucleoid, no membrane-bound organelles, and a cell wall. What type of cell is this most likely to be?

Accepted Answer

Prokaryotic cell

Question 3

Which organelle is responsible for synthesizing lipids and detoxifying drugs in eukaryotic cells?

Accepted Answer

Smooth endoplasmic reticulum

Question 4

A white blood cell engulfs a bacterium. Which organelle is primarily responsible for breaking down the bacterium?

Accepted Answer

Lysosome

Question 5

Which of the following best describes the function of the Golgi apparatus?

Accepted Answer

Modifies, stores, and routes products of the endoplasmic reticulum

Question 6

According to the endosymbiotic theory, which organelles are believed to have originated from free-living prokaryotes?

Accepted Answer

Mitochondria and chloroplasts

Question 7

Which equation correctly represents the process of cellular respiration occurring in mitochondria?

Accepted Answer

$$\mathrm{C_6H_{12}O_6$} + 6\mathrm{O_2$} ightarrow 6\mathrm{CO_2$} + 6\mathrm{H_2O} + 	ext{energy}$$

Question 8

Which structure in plant cells is analogous to gap junctions in animal cells, allowing cytoplasmic exchange between adjacent cells?

Accepted Answer

Plasmodesmata

Question 9

A mutation prevents the formation of the nucleolus in a eukaryotic cell. Which process would be most directly affected?

Accepted Answer

rRNA synthesis and ribosome assembly

Question 10

Which component of the cytoskeleton is primarily responsible for cell movement, such as the action of cilia and flagella?

Accepted Answer

Microtubules

Question 11

Which macromolecule is the main component of plant cell walls?

Accepted Answer

Cellulose

Question 12

A cell is observed to have a large central vacuole, chloroplasts, and a cell wall. Which type of cell is this?

Accepted Answer

Plant cell

Question 13

Which of the following is NOT a function of the extracellular matrix (ECM) in animal cells?

Accepted Answer

Synthesizing ATP

Question 14

Which cell junction would you expect to find in the lining of the human intestine to prevent leakage of materials between cells?

Accepted Answer

Tight junctions

Question 15

Which of the following statements about prokaryotic cells is TRUE?

Accepted Answer

They have a cell wall and a nucleoid region.

Question 16

Which organelle is the primary site for the synthesis of proteins that are destined for secretion from the cell?

Accepted Answer

Rough endoplasmic reticulum

Question 17

Which of the following best explains why mitochondria and chloroplasts have their own DNA and ribosomes?

Accepted Answer

They originated from ancient prokaryotes through endosymbiosis.

Question 18

A sperm cell uses a long, whip-like structure for movement. What is this structure called?

Accepted Answer

Flagellum

Question 19

Which of the following is a correct sequence for the pathway of a protein destined for secretion from a eukaryotic cell?

Accepted Answer

Rough ER → Golgi apparatus → Transport vesicle → Plasma membrane

Question 20

Which of the following best describes the role of integrins in animal cells?

Accepted Answer

They connect the extracellular matrix to the cytoskeleton.

A Tour of the Cell: Prokaryotic and Eukaryotic Cell Structure

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