Q: Which of the following equations correctly represents the process of cellular respiration in mitochondria?

$$\text{carbohydrate} + \text{oxygen} \rightarrow \text{carbon dioxide} + \text{water} + \text{energy}$$

Question 1

Which of the following best describes the main difference between prokaryotic and eukaryotic cells?

Accepted Answer

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

Question 2

A scientist is using a microscope to observe the detailed internal structure of a mitochondrion. Which type of microscope should they use for the highest resolution?

Accepted Answer

Transmission electron microscope (TEM)

Question 3

Which of the following equations correctly represents the process of cellular respiration in mitochondria?

Accepted Answer

$$	ext{carbohydrate} + 	ext{oxygen} ightarrow 	ext{carbon dioxide} + 	ext{water} + 	ext{energy}$$

Question 4

Which organelle is responsible for the synthesis of proteins that are exported from the cell?

Accepted Answer

Rough endoplasmic reticulum

Question 5

A mutation prevents the formation of the 9 + 2 arrangement of microtubules. Which cellular structure would be most directly affected?

Accepted Answer

Cilia

Question 6

Which of the following statements about the endosymbiotic theory is correct?

Accepted Answer

It proposes that mitochondria and chloroplasts originated from free-living prokaryotes engulfed by ancestral eukaryotes.

Question 7

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

Accepted Answer

It processes, packages, and secretes proteins and lipids.

Question 8

A plant cell is observed to have a large central vacuole. What is the primary function of this structure?

Accepted Answer

Storage of organic compounds and maintenance of cell turgor

Question 9

Which of the following is NOT part of the endomembrane system?

Accepted Answer

Mitochondrion

Question 10

A liver cell is exposed to a high concentration of alcohol. Which organelle is most likely to increase in abundance to help detoxify the alcohol?

Accepted Answer

Smooth endoplasmic reticulum

Question 11

Which of the following best explains why plant cells can maintain a rigid structure while animal cells cannot?

Accepted Answer

Plant cells have a cell wall made of cellulose, providing structural support.

Question 12

Which of the following is a function of lysosomes in animal cells?

Accepted Answer

Intracellular digestion of macromolecules

Question 13

A cell is observed to have a high number of ribosomes attached to its endoplasmic reticulum. What is the most likely function of this cell?

Accepted Answer

Secretion of large amounts of protein

Question 14

Which of the following best describes the structure of the plasma membrane?

Accepted Answer

A phospholipid bilayer with embedded proteins

Question 15

Which of the following is a correct sequence of structures through which a protein destined for secretion would pass?

Accepted Answer

Rough ER → Golgi apparatus → Plasma membrane

Question 16

Which of the following is a function of microtubules in eukaryotic cells?

Accepted Answer

Movement of vesicles within the cell

Question 17

A mutation disrupts the function of peroxisomes in a cell. Which process would be most directly affected?

Accepted Answer

Breakdown of fatty acids and detoxification of alcohol

Question 18

Which of the following best explains why mitochondria and chloroplasts are considered evidence for the endosymbiotic theory?

Accepted Answer

They contain their own DNA and ribosomes.

Question 19

Which of the following cell junctions is unique to plant cells and allows cytoplasmic exchange between adjacent cells?

Accepted Answer

Plasmodesmata

Question 20

A scientist isolates a structure from a cell that is composed of actin and is involved in muscle contraction. Which structure has been isolated?

Accepted Answer

Microfilament

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