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

$$\mathrm{C$$_{6}$$H_{12}O$$_{6}} + 6\ \mathrm{O_{2}} \rightarrow 6\ \mathrm{CO_{2}} + 6\ \mathrm{$$H_{2}O$$} + \text{energy (ATP)}$

Question 1

Which of the following best explains why transmission electron microscopy (TEM) is preferred over light microscopy for observing the internal structure of mitochondria?

Accepted Answer

TEM provides higher magnification and resolution, allowing visualization of subcellular organelles that are too small for light microscopes.

Question 2

A scientist wants to study the surface of a pollen grain in great detail. Which type of microscopy should they use, and why?

Accepted Answer

Scanning electron microscopy (SEM), because it provides detailed 3D images of surfaces.

Question 3

Which of the following statements about ribosomes is correct?

Accepted Answer

Ribosomes are found in both prokaryotic and eukaryotic cells and are responsible for protein synthesis.

Question 4

If a cell is observed to have a large number of bound ribosomes on its endoplasmic reticulum, what can you infer about its function?

Accepted Answer

The cell is likely specialized for producing proteins that are secreted or inserted into membranes.

Question 5

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

Accepted Answer

It modifies, sorts, and packages proteins and lipids for secretion or delivery to other organelles.

Question 6

A mutation causes a cell to lack functional lysosomes. Which of the following would most likely result from this mutation?

Accepted Answer

The cell would accumulate undigested macromolecules, leading to cellular dysfunction.

Question 7

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

Accepted Answer

$$\mathrm{C$$_{6}$$H_{12}O$$_{6}} + 6\ \mathrm{O_{2}} ightarrow 6\ \mathrm{CO_{2}} + 6\ \mathrm{$$H_{2}O$$} + 	ext{energy (ATP)}$

Question 8

Which of the following is a function of the plant cell wall that is NOT shared by animal cells?

Accepted Answer

Prevents excessive water uptake by providing structural support.

Question 9

A researcher observes a eukaryotic cell with a large, prominent nucleolus. What is the most likely function of this structure?

Accepted Answer

Synthesis of ribosomal RNA ($$rRNA) $$and assembly of ribosomal subunits.

Question 10

Which of the following best explains why plant cells contain both mitochondria and chloroplasts?

Accepted Answer

Mitochondria generate ATP for cellular processes, while chloroplasts capture light energy to produce glucose during photosynthesis.

Question 11

Which type of cell junction allows the passage of small molecules or ions between neighboring animal cells?

Accepted Answer

Gap junctions

Question 12

A scientist is studying a protein that is destined to be secreted from a eukaryotic cell. Which of the following best describes the correct pathway for this protein?

Accepted Answer

Rough ER $$\rightarrow$$ transport vesicle $$\rightarrow$$ Golgi apparatus $$\rightarrow$$ plasma membrane

Question 13

Which cytoskeletal element is primarily responsible for maintaining cell shape and resisting tension (pulling forces)?

Accepted Answer

Microfilaments (actin filaments)

Question 14

Which of the following statements about the plasma membrane is correct?

Accepted Answer

It is a selectively permeable barrier that regulates the movement of substances into and out of the cell.

Question 15

If a eukaryotic cell is treated with a drug that disrupts the function of the smooth endoplasmic reticulum, which process would be most directly affected?

Accepted Answer

Synthesis of lipids and detoxification of drugs and poisons.

Question 16

Which of the following best describes the role of the nucleolus in the nucleus?

Accepted Answer

It is the site where ribosomal RNA ($$rRNA) is $$synthesized and combined with proteins to form ribosomal subunits.

Question 17

Which of the following is NOT a function of the endomembrane system?

Accepted Answer

Synthesis of ATP via oxidative phosphorylation.

Question 18

Which of the following best explains why animal cells do not have cell walls?

Accepted Answer

Animal cells rely on an extracellular matrix for structural support and flexibility, rather than a rigid cell wall.

Question 19

A mutation in a plant cell prevents the formation of plasmodesmata. Which of the following would most likely be affected?

Accepted Answer

The ability of the cell to communicate and transport molecules directly to adjacent plant cells.

Question 20

Which of the following best describes the function of tight junctions in animal cells?

Accepted Answer

They form a seal that prevents the leakage of extracellular fluid between neighboring cells.

Cell Structure and Function: Study Notes for General Biology

스터디 가이드 - 연습 문제

학습 가이드 - 플래시카드