The Cell Quiz #3

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Quizzes Created: 6 | Total Attempts: 27,324
| Attempts: 248
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  • 1/14 Questions

    Which cell organelle contains DNA?

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The Cell Quiz #3 - Quiz
About This Quiz

The Cell Quiz #3 explores various cellular components and their functions. It assesses understanding of organelles, energy requirements in cells, and implications of cellular structures on functions like protein synthesis and energy provision, crucial for learners studying biology.

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  • 2. 

    Which cell organelle makes ATP?

    Explanation
    Mitochondria are the cell organelles responsible for producing ATP, which is the main energy currency of the cell. Through a process called cellular respiration, mitochondria convert nutrients into ATP molecules, releasing energy that can be used for various cellular activities. The inner membrane of mitochondria contains enzymes and electron transport chains that are crucial for ATP synthesis. Therefore, mitochondria are commonly referred to as the "powerhouses" of the cell due to their role in energy production.

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  • 3. 

    Which cell organelle synthesizes protein?

    Explanation
    Ribosomes are responsible for synthesizing proteins in a cell. They are small, spherical organelles found either freely floating in the cytoplasm or attached to the endoplasmic reticulum. Ribosomes read the genetic information encoded in the mRNA and use it to assemble amino acids into a polypeptide chain, which eventually folds into a functional protein. Therefore, ribosomes play a crucial role in protein synthesis, making them the correct answer to the question.

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  • 4. 

    Which cell organelle controls what comes in and out of a cell?

    Explanation
    The cell membrane is a selectively permeable barrier that controls the movement of substances in and out of the cell. It is composed of a phospholipid bilayer with embedded proteins that regulate the transport of molecules. This organelle plays a crucial role in maintaining homeostasis by allowing necessary nutrients and molecules to enter the cell while keeping harmful substances out. Additionally, it helps in communication between cells and provides structural support to the cell.

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  • 5. 

    In which cell organelle does photosynthesis occur?

    Explanation
    Photosynthesis occurs in the chloroplasts. Chloroplasts are the organelles found in plant cells that contain chlorophyll, which is responsible for capturing sunlight and converting it into energy through photosynthesis. This process is essential for plants to produce glucose and oxygen, which are crucial for their growth and survival. Therefore, the correct answer is chloroplasts.

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  • 6. 

    Which cell organelle contains enzymes that are used to break down waste in the cell?

    Explanation
    Lysosomes are cell organelles that contain enzymes responsible for breaking down waste materials in the cell. These enzymes, known as hydrolytic enzymes, help in the digestion of macromolecules such as proteins, lipids, carbohydrates, and nucleic acids. Lysosomes play a crucial role in maintaining cellular homeostasis by recycling cellular components and eliminating waste products. They also aid in the destruction of foreign substances, such as bacteria and viruses, that enter the cell.

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  • 7. 
    Which cell is a plant cell? - ProProfs

    Which cell is a plant cell?

    • Cell 1

    • Cell 2

    Correct Answer
    A. Cell 1
  • 8. 

    If the ribosomes of a cell were destroyed, what effect would this most likely have on the cell? (1) It would stimulate mitotic cell division. (2) The cell would be unable to synthesize proteins. (3) Development of abnormal hereditary features would occur in the cell. (4) Increased protein absorption would occur through the cell membrane.

    • 1

    • 2

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    • 4

    Correct Answer
    A. 2
    Explanation
    If the ribosomes of a cell were destroyed, the most likely effect on the cell would be that it would be unable to synthesize proteins. Ribosomes are responsible for protein synthesis in a cell, so their destruction would disrupt this process. Proteins are essential for various cellular functions, including structural support, enzymatic activity, and cell signaling. Without the ability to synthesize proteins, the cell would not be able to carry out these functions properly, leading to a variety of cellular dysfunction and potentially cell death.

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  • 9. 

    While viewing a slide of rapidly moving sperm cells, a student concludes that these cells require a large amount of energy to maintain their activity. The organelles that most directly provide this energy are known as (1) vacuoles (3) chloroplasts (2) ribosomes (4) mitochondria

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    • 4

    Correct Answer
    A. 4
    Explanation
    Mitochondria are the organelles responsible for providing energy to cells through the process of cellular respiration. They generate ATP, which is the main energy currency of the cell. Since sperm cells are constantly moving and require a high amount of energy for their activity, it makes sense that mitochondria, which produce energy, would be the organelles most directly responsible for providing this energy.

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  • 10. 

    Which organelle is correctly paired with its specific function? (1) cell membrane—storage of hereditary information (2) chloroplast—transport of materials (3) ribosome—synthesis of proteins (4) vacuole—production of ATP

    • 1

    • 2

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    • 4

    Correct Answer
    A. 3
    Explanation
    The correct answer is (3) ribosome—synthesis of proteins. Ribosomes are responsible for protein synthesis, which is the process of creating proteins from amino acids. They are found in both prokaryotic and eukaryotic cells and can be free-floating in the cytoplasm or attached to the endoplasmic reticulum. Ribosomes read the genetic information in mRNA and use it to assemble amino acids into a polypeptide chain, which then folds into a functional protein.

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  • 11. 
    What is the function of structure A? - ProProfs

    What is the function of structure A?

    • Creates ATP

    • Creates protein

    • Contains DNA

    • Controls what enters and leaves the cell

    Correct Answer
    A. Creates ATP
    Explanation
    Structure A is responsible for creating ATP. ATP, or adenosine triphosphate, is the main source of energy for cellular processes. Therefore, the function of structure A is to generate ATP, which is essential for the cell's energy needs.

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  • 12. 

    Studies of fat cells and thyroid cells show that fat cells have fewer mitochondria than thyroid cells. A biologist would most likely infer that fat tissue (1) does not require energy (2) has energy requirements equal to those of thyroid tissue (3) requires less energy than thyroid tissue (4) requires more energy than thyroid tissue

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    Correct Answer
    A. 3
    Explanation
    The biologist would most likely infer that fat tissue requires less energy than thyroid tissue because the statement mentions that fat cells have fewer mitochondria than thyroid cells. Mitochondria are responsible for producing energy in cells, so fewer mitochondria in fat cells suggest that they require less energy compared to thyroid cells.

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  • 13. 

    Homeostasis in unicellular organisms depends on the proper functioning of (1) organelles (3) guard cells (2) insulin (4) antibodies

    • 1

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    • 4

    Correct Answer
    A. 1
    Explanation
    Homeostasis in unicellular organisms depends on the proper functioning of organelles. Organelles are specialized structures within a cell that perform specific functions necessary for maintaining the internal environment of the cell. They help regulate processes such as nutrient uptake, waste removal, and energy production, which are essential for the survival and stability of the cell. Without the proper functioning of organelles, the cell would not be able to maintain a stable internal environment, leading to disruptions in homeostasis. Insulin, antibodies, and guard cells do not play a direct role in homeostasis in unicellular organisms.

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  • 14. 

    Which of the following organelles are ONLY found in plant cells and not animal cells?

    • Chloroplasts

    • Cell wall

    • Central vacuole

    • Nucleus

    • Cell membrane

    • Mitochondria

    Correct Answer(s)
    A. Chloroplasts
    A. Cell wall
    A. Central vacuole
    Explanation
    Chloroplasts are only found in plant cells and are responsible for photosynthesis, converting sunlight into energy. The cell wall is a rigid structure that provides support and protection to plant cells. The central vacuole is a large fluid-filled organelle that stores water, nutrients, and waste products in plant cells. The nucleus, cell membrane, and mitochondria are found in both plant and animal cells.

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  • Current Version
  • Mar 22, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Oct 11, 2011
    Quiz Created by
    Jjanosko
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