Cell Organelles And Their Functions Quiz
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We welcome you to this "Cell Organelles And Their Functions" quiz. Cell organelles help in the survival of cells by harvesting energy, making new proteins, and getting rid of dead cells. There exist about 12 organelles in a cell, each with a specific objective that helps the body carry out its functions. Take up the test below and get to see how much knowledge you have gained so far when it comes to cells. Remember to collect your scorecard once you've completed the quiz. All the best!
- 1.
What is the function of a cell wall?
- A.
Structure and protection
- B.
Organizes DNA
- C.
Digests, recycles materials
- D.
Communication junction between adjoining cells
- E.
ATP formation
Correct Answer
A. Structure and protectionExplanation
The function of a cell wall is to provide structure and protection to the cell. It acts as a rigid outer layer that gives shape to the cell and protects it from external mechanical forces. The cell wall also helps in preventing the cell from bursting due to osmotic pressure. Additionally, it provides a barrier against pathogens and other harmful substances, ensuring the cell's integrity and survival.Rate this question:
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- 2.
Chloroplasts plays an important role in:
- A.
Organizes and moves internal parts of the cell.
- B.
Cell contraction, movements, and structural support.
- C.
Assembly of subunits of ribosomes.
- D.
Photosynthesis
- E.
Structurally supports and gives shape to a cell. Moves the cell and its components.
Correct Answer
D. PhotosynthesisExplanation
Chloroplasts are responsible for photosynthesis, the process by which plants convert sunlight into energy. They contain chlorophyll, a pigment that captures light energy, and other molecules necessary for the chemical reactions involved in photosynthesis. Through this process, chloroplasts produce glucose and oxygen, which are essential for the plant's growth and survival. Therefore, the correct answer is photosynthesis.Rate this question:
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- 3.
What is the function of the central vacuole?
- A.
ATP formation.
- B.
Protein synthesis.
- C.
Modifies, sorts, and ships lipids for export or for insertion into the cell membrane.
- D.
Organizes and moves internal parts of the cell.
- E.
Increases the cell surface area and stores metabolic waste.
Correct Answer
E. Increases the cell surface area and stores metabolic waste.Explanation
The central vacuole functions to increase the cell surface area and store metabolic waste. It helps maintain the shape and structure of the cell by occupying a large portion of the cell's volume. Additionally, the central vacuole stores various substances such as water, ions, nutrients, and waste products. By storing metabolic waste, the vacuole prevents the accumulation of harmful substances within the cell. Moreover, the expansion and contraction of the central vacuole can also contribute to changes in cell size and shape.Rate this question:
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- 4.
Nucleus plays an important role in ____________.
- A.
Digests, recycles materials
- B.
Organizing DNA
- C.
Structurally supports and gives shape to a cell. Moves the cell and its components.
- D.
Organizes and moves internal parts of the cell.
- E.
Makes lipids, degrades fats and inactivates toxins.
Correct Answer
B. Organizing DNAExplanation
The nucleus is responsible for organizing DNA within a cell. It contains the cell's genetic material, including chromosomes and genes, which carry the instructions for the cell's functions and characteristics. The nucleus ensures that the DNA is properly organized and packaged, allowing for efficient gene expression and regulation. This organization is crucial for the cell's overall functioning and development.Rate this question:
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- 5.
What is the role of nucleolus?
- A.
Modifies, sorts, and ships lipids for export of for insertion into the cell membrane.
- B.
Protein synthesis.
- C.
Controls the substances going inside and out of the cell.
- D.
Assembly of Subunits of Ribosomes.
- E.
Photosynthesis
Correct Answer
D. Assembly of Subunits of Ribosomes.Explanation
The nucleolus is responsible for the assembly of subunits of ribosomes. Ribosomes are essential for protein synthesis, and they consist of two subunits that are synthesized separately and then assembled in the nucleolus. Once the subunits are assembled, they are transported out of the nucleolus to the cytoplasm, where they can join together and function as ribosomes. Therefore, the role of the nucleolus is specifically related to the assembly of ribosomal subunits, rather than other cellular processes such as lipid modification, protein synthesis, or controlling substances entering or leaving the cell.Rate this question:
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- 6.
What is the role of ribosomes?
- A.
Protein synthesis
- B.
Modifies new polypeptide chains and synthesizes lipids
- C.
Structurally supports and gives shape to a cell. Moves the cell and its components.
- D.
Cell contraction, movements, and structural support
- E.
ATP formation
Correct Answer
A. Protein synthesisExplanation
Ribosomes play a crucial role in protein synthesis, which involves the creation of new proteins. They act as the site where mRNA is translated into proteins by assembling amino acids in the correct order. This process is essential for the functioning and maintenance of cells, as proteins are involved in various cellular processes such as enzyme activity, cell signaling, and structural support. Therefore, the role of ribosomes in protein synthesis is vital for the overall functioning and survival of cells.Rate this question:
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- 7.
What is the function of rough ER?
- A.
Modifies, sorts, and ships lipids for export of for insertion into the cell membrane.
- B.
Digests, and recycles materials.
- C.
Assembly of subunits of ribosomes.
- D.
Communication junction between adjoining cells.
- E.
Protein synthesis, processing, and transport.
Correct Answer
E. Protein synthesis, processing, and transport.Explanation
The rough endoplasmic reticulum (rough ER) is a complex organelle within a cell that serves several important functions, primarily related to protein synthesis, processing, and transport. It plays a crucial role in the proper functioning of the cell and is characterized by its rough appearance due to the presence of ribosomes attached to its surface.Rate this question:
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- 8.
What is the function of smooth ER?
- A.
Communication junction between adjoining cells.
- B.
Organizes DNA.
- C.
Makes lipids, degrades fats, and inactivates toxins.
- D.
Organizes and moves internal parts of the cell.
- E.
Digests, and recycles materials.
Correct Answer
C. Makes lipids, degrades fats, and inactivates toxins.Explanation
Smooth ER is responsible for making lipids, degrading fats, and inactivating toxins. It does not have a role in communication between cells, organizing DNA, organizing and moving internal parts of the cell, or digesting and recycling materials. Therefore, the correct answer is that smooth ER is involved in lipid synthesis, fat degradation, and toxin inactivation.Rate this question:
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- 9.
What is the importance of the Golgi Body?
- A.
It modifies, sorts, and ships lipids for export or for insertion into the cell membrane.
- B.
ATP formation.
- C.
Photosynthesis
- D.
Communication junction between adjoining cells.
- E.
Protein synthesis.
Correct Answer
A. It modifies, sorts, and ships lipids for export or for insertion into the cell membrane.Explanation
The Golgi Body plays a crucial role in the cell by modifying, sorting, and shipping lipids for export or for insertion into the cell membrane. This process is essential for maintaining the integrity and functionality of the cell membrane. By modifying and sorting lipids, the Golgi Body ensures that they are properly distributed within the cell and transported to their intended destinations. This is important for various cellular processes, including cell signaling, membrane repair, and the export of lipids to other parts of the body.Rate this question:
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- 10.
Lysosome-Like Vesicle helps in _________.
- A.
Organizes and moves internal parts of the cell.
- B.
Photosynthesis
- C.
Makes lipids, degrades fats and inactivates toxins.
- D.
Digesting, and recycling the materials.
- E.
Structurally supports and gives shape to a cell. Moves the cell and its components.
Correct Answer
D. Digesting, and recycling the materials.Explanation
The Lysosome-Like Vesicle is responsible for digesting and recycling materials within the cell. It breaks down various substances, such as proteins, lipids, and carbohydrates, into smaller components that can be reused by the cell. This process helps to maintain cellular homeostasis by removing waste products and recycling essential nutrients.Rate this question:
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- 11.
What is the function of the plasma membrane?
- A.
Makes lipids, degrades fats and inactivates toxins.
- B.
Protein synthesis.
- C.
Digests, and recycles materials.
- D.
Organizes DNA.
- E.
Controls the substances going inside and out of the cell.
Correct Answer
E. Controls the substances going inside and out of the cell.Explanation
The plasma membrane acts as a selective barrier that controls the movement of substances in and out of the cell. It regulates the entry of essential nutrients and ions while preventing the passage of harmful substances. This function is crucial for maintaining cell homeostasis and ensuring that the internal environment remains stable. By controlling the substances that enter and exit the cell, the plasma membrane plays a vital role in supporting cellular functions and protecting the cell from potentially harmful molecules.Rate this question:
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- 12.
Mitochondrion helps in _______.
- A.
Digests, and recycles materials.
- B.
Organizes DNA.
- C.
Modifies, sorts, and ships lipids for export or for insertion into the cell membrane.
- D.
ATP formation.
- E.
Structurally supports and gives shape to a cell. Moves the cell and its components.
Correct Answer
D. ATP formation.Explanation
Mitochondria are responsible for ATP formation. ATP, or adenosine triphosphate, is the main energy currency of cells. Mitochondria have their own DNA and specialized machinery to generate ATP through a process called oxidative phosphorylation. This process involves the transfer of electrons from molecules in the mitochondria to generate a proton gradient, which is then used to produce ATP. Therefore, the correct answer is ATP formation.Rate this question:
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- 13.
What role does the cytoskeleton play?
- A.
Structure and protection.
- B.
Organizes and moves internal parts of the cell.
- C.
Organizes DNA.
- D.
Makes lipids, degrades fats, and inactivates toxins
- E.
Structurally supports and gives shape to a cell. Moves the cell and its components.
Correct Answer
E. Structurally supports and gives shape to a cell. Moves the cell and its components.Explanation
The cytoskeleton plays a crucial role in providing structural support and shape to a cell. It helps to maintain the integrity of the cell by providing a framework that holds all the organelles and other cellular components in place. Additionally, the cytoskeleton is responsible for cell movement, as it enables the cell to change shape and move its components. Overall, the cytoskeleton is essential for maintaining the structural integrity and functionality of the cell.Rate this question:
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- 14.
Microtubules helps in _____________.
- A.
Modifies, sorts, and ships lipids for export or for insertion into the cell membrane.
- B.
Organizes DNA.
- C.
Organizing and moving internal parts of the cell.
- D.
Makes lipids, degrades fats and inactivates toxins.
- E.
Assembly of subunits of ribosomes.
Correct Answer
C. Organizing and moving internal parts of the cell.Explanation
Microtubules are responsible for organizing and moving internal parts of the cell. They form a network of protein filaments that provide structural support and act as tracks for transporting organelles, vesicles, and other cellular components. By organizing and moving these internal parts, microtubules play a crucial role in various cellular processes such as cell division, intracellular transport, and maintaining cell shape.Rate this question:
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- 15.
Microfilaments help in ______________.
- A.
Assembly of subunits of ribosomes.
- B.
Cell contraction, movements, and structural support.
- C.
Controls the substances going inside and out of the cell.
- D.
Organizes DNA.
- E.
Protein synthesis
Correct Answer
B. Cell contraction, movements, and structural support.Explanation
Microfilaments, also known as actin filaments, are thin protein filaments that play a crucial role in cell contraction, movements, and structural support. They form a network within the cell, providing mechanical support and enabling various cellular processes such as cell division, cell migration, and muscle contraction. By interacting with other proteins and motor molecules, microfilaments generate the force necessary for cell movement and shape changes. They also contribute to the maintenance of cell shape and provide structural support to the cell.Rate this question:
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- 16.
Intermediate Filaments helps in __________.
- A.
Strengthening the cell.
- B.
Forms of ATP.
- C.
Cell contraction, movements, and structural support.
- D.
Digests, and recycles materials.
- E.
Modifies new polypeptide chains, synthesizes lipids.
Correct Answer
A. Strengthening the cell.Explanation
Intermediate filaments play a crucial role in strengthening the cell. They provide mechanical support and stability to the cell, helping it withstand physical stress and maintain its shape. These filaments are particularly important in cells that experience mechanical strain, such as muscle cells and epithelial cells. By forming a strong network within the cytoplasm, intermediate filaments contribute to the overall structural integrity of the cell, ensuring its proper functioning and protection against external forces.Rate this question:
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