Question 1

Which of the following best illustrates the concept that 'a cell is greater than the sum of its parts'?

Accepted Answer

Cellular functions arise from the integration and coordination of organelles and molecules, resulting in emergent properties.

Question 2

A macrophage engulfs bacteria using its filopodia. Which cellular structures are directly involved in this process?

Accepted Answer

Cytoskeleton (actin filaments), plasma membrane, and lysosomes

Question 3

After a macrophage engulfs bacteria, which organelle is primarily responsible for digesting the bacteria?

Accepted Answer

Lysosome

Question 4

Which sequence correctly describes the flow of genetic information leading to the production of digestive enzymes in a lysosome?

Accepted Answer

DNA → mRNA → ribosome → protein → lysosome

Question 5

Which of the following best explains why mitochondria are essential for the function of a macrophage?

Accepted Answer

They provide ATP required for cellular processes such as movement and phagocytosis.

Question 6

A unicellular protist, Colpidium colpoda, moves using cilia and ingests bacteria. Which organelles are most directly involved in its movement and digestion?

Accepted Answer

Cilia, lysosomes, and mitochondria

Question 7

Which of the following is a correct statement about the relationship between ribosomes and the endomembrane system?

Accepted Answer

Ribosomes synthesize proteins that are then processed and transported by the endomembrane system.

Question 8

Which of the following best describes the role of actin filaments in a macrophage's ability to engulf bacteria?

Accepted Answer

They interact with other cytoskeletal elements to extend filopodia and facilitate movement.

Question 9

If a mutation prevented the formation of lysosomes in a cell, which process would be most directly affected?

Accepted Answer

Digestion of engulfed particles

Question 10

Which of the following best explains why the cell is considered a 'living unit greater than the sum of its parts'?

Accepted Answer

The coordinated interactions among organelles and molecules produce emergent properties not found in individual components.

Question 11

Which of the following is the correct order of structures from largest to smallest as visualized in the cell?

Accepted Answer

Nucleus → mitochondrion → ribosome → protein

Question 12

Which process requires the coordinated action of the cytoskeleton, plasma membrane, and lysosomes?

Accepted Answer

Phagocytosis by a macrophage

Question 13

Which of the following best describes the function of the nuclear envelope?

Accepted Answer

It separates the genetic material from the cytoplasm and regulates transport into and out of the nucleus.

Question 14

Which of the following equations best represents the energy conversion that occurs in mitochondria?

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 15

Which of the following is a real-world example of how the failure of one organelle can disrupt the function of the entire cell?

Accepted Answer

A mutation in mitochondrial DNA leads to reduced ATP production, impairing muscle and nerve function.

Question 16

Which of the following statements about the endomembrane system is correct?

Accepted Answer

It is involved in the synthesis, modification, and transport of proteins and lipids.

Question 17

Which of the following best describes the role of the rough endoplasmic reticulum (RER)?

Accepted Answer

It is the site of protein synthesis for proteins destined for secretion or for use in the endomembrane system.

Question 18

Which of the following is a multi-step process that integrates several organelles to produce a functional enzyme?

Accepted Answer

Transcription in the nucleus, translation by ribosomes, modification in the Golgi apparatus, and transport in vesicles

Question 19

Which of the following is NOT a shared feature of all living cells?

Accepted Answer

Presence of a nucleus

Cellular Organization: Integration of Structure and Function

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