Cell Structure and Function Quiz
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Cell Structure and Function Quiz

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Questions and Answers

What is the primary function of ribosomes within a cell?

  • To synthesize proteins (correct)
  • To transport substances
  • To store food and water
  • To contain digestive enzymes

    • Which of the following structures is responsible for supporting and protecting plant cells?

  • Cell membrane
  • Nucleus
  • Cytoplasm
  • Cell wall (correct)

    • Which structure plays a role as the control center of the cell and contains DNA?

  • Ribosome
  • Nucleus (correct)
  • Nucleolus
  • Lysosome

    • What is the significance of the cytoplasm in a cell?

    <p>It surrounds and protects the organelles.</p> Signup and view all the answers

    What type of epithelium consists of flattened, irregular cells commonly referred to as pavement epithelium?

    <p>Squamous epithelium</p> Signup and view all the answers

    What is the primary function of epithelial tissue?

    <p>Secrete and filter materials</p> Signup and view all the answers

    Where in the body would you typically find cuboidal epithelium?

    <p>Kidney tubules</p> Signup and view all the answers

    What is a key characteristic of columnar epithelium?

    <p>Cells are tall and pillar-like</p> Signup and view all the answers

    Which of the following is NOT a function of epithelial tissue?

    <p>Mechanical support</p> Signup and view all the answers

    Which type of epithelial tissue forms glands that secrete substances?

    <p>Glandular epithelium</p> Signup and view all the answers

    Which of the following is a location for simple squamous epithelium?

    <p>Alveoli of lungs</p> Signup and view all the answers

    What is the main structural characteristic of cuboidal epithelium?

    <p>Cells are cube-like with round nuclei</p> Signup and view all the answers

    What type of epithelial tissue would you find lining blood vessels?

    <p>Simple squamous</p> Signup and view all the answers

    What does a 'Warning' label signify regarding hazards?

    <p>Hazards can cause less than serious injuries.</p> Signup and view all the answers

    Which of the following is an example of a physical hazard?

    <p>Broken glass beakers</p> Signup and view all the answers

    What type of information can be found on a Material Safety Data Sheet (MSDS)?

    <p>Hazardous substances safety rules</p> Signup and view all the answers

    What does 'Caution' warn users about?

    <p>Users should handle chemicals carefully.</p> Signup and view all the answers

    Which hazard is represented by 'Environmental Hazard'?

    <p>Chemical leaks into water sources</p> Signup and view all the answers

    What is the purpose of a fume hood in a laboratory setting?

    <p>To protect against exposure to chemical fumes, gases, and aerosols.</p> Signup and view all the answers

    Which of the following is NOT a source of information about hazardous reagents?

    <p>Fine art books</p> Signup and view all the answers

    What does the Globally Harmonized System (GHS) refer to?

    <p>A universal system for classification and labeling of chemicals.</p> Signup and view all the answers

    What is a key function of nervous tissue?

    <p>Generating and transmitting nerve impulses</p> Signup and view all the answers

    Which type of epithelial tissue is characterized by cells that appear to be layered?

    <p>Pseudostratified columnar epithelium</p> Signup and view all the answers

    What characteristic is true about squamous epithelium?

    <p>It is simple and one cell thick</p> Signup and view all the answers

    Which type of connective tissue provides insulation and energy storage?

    <p>Adipose</p> Signup and view all the answers

    What is an example of a toxic substance that can have long-term harmful effects?

    <p>Carcinogenic chemicals</p> Signup and view all the answers

    Why is accident prevention emphasized in laboratory operations?

    <p>Doing safety is essential to effective laboratory work</p> Signup and view all the answers

    Which type of muscle tissue is responsible for voluntary movements in the body?

    <p>Skeletal muscle</p> Signup and view all the answers

    What does a corrosive substance do upon contact with human tissue?

    <p>It can cause severe damage</p> Signup and view all the answers

    What is the first action recommended during a fire emergency?

    <p>Go to the ground level into open air.</p> Signup and view all the answers

    What should be ensured about emergency exits?

    <p>They must show the way to the nearest exit.</p> Signup and view all the answers

    Which information should be provided during an emergency call?

    <p>The location of the emergency.</p> Signup and view all the answers

    What must you NOT do when evacuating a building during a fire?

    <p>Return to the building until it is confirmed safe.</p> Signup and view all the answers

    Which of the following is NOT a goal of hazard communication?

    <p>Avoiding all forms of labeling.</p> Signup and view all the answers

    Study Notes

    Cell Structure and Function

    • Endoplasmic Reticulum (E.R.): Has ribosomes, builds and transports substances within the cell. Smooth E.R. is ribosome-free.
    • Cell Membrane: Double layer structure that protects the cell, allowing selective passage of materials.
    • Ribosome: Essential for protein synthesis in the cell.
    • Lysosome: Contains enzymes that digest damaged organelles and foreign invaders.
    • Cytoplasm: Jelly-like fluid that encases organelles, providing protection and support.
    • Nucleus: The control center housing DNA, responsible for cell regulation.
    • Nuclear Membrane: Encloses the nucleus, providing an additional protective layer.
    • Cell Wall: Present in plant cells; provides shape and structural support.
    • Nucleolus: Spherical structure within the nucleus that synthesizes ribosomes.
    • Chloroplast: Converts sunlight into sugar; contains chlorophyll for photosynthesis.
    • Vacuole: Stores food and water, crucial for cell hydration and nutrient storage.

    Tissue Types in Biochemistry

    Types of Tissues

    • Epithelial Tissue: Covers body surfaces, lines cavities and organs, and forms glands.
    • Connective Tissue: Supports and binds other tissues; includes adipose, bone, and cartilage types.
    • Muscle Tissue: Responsible for movement through contraction.
    • Nervous Tissue: Facilitates communication through nerve impulses.

    Epithelial Tissue Characteristics

    • Squamous Epithelium: Flattened cells resembling floor tiles; functions in protection.
    • Cuboidal Epithelium: Cube-shaped cells; found in kidney tubules and salivary glands.
    • Columnar Epithelium: Tall, pillar-like cells; line digestive tract for absorption and secretion.
    • Pseudostratified Epithelium: Appears layered; functions in secretion and movement of mucus.

    Safety in the Laboratory

    • Toxic Substances: Can cause acute poisoning or long-term health risks like carcinogenic effects.
    • Flammable Substances: Potential fire hazards; must be handled with care, particularly solvent chemicals.
    • Corrosive Substances: Can damage metals and living tissue; examples include hydrochloric and nitric acids.
    • Reactive Substances: Unstable and can react violently under normal conditions.

    Laboratory Safety Guidelines

    • Essential to prioritize accident prevention; proper safety protocols must always be followed.
    • Chemical identification through Material Safety Data Sheets (MSDS) is crucial for safe handling.
    • Signage and color coding (e.g., Danger, Warning, Caution) communicate hazard levels effectively.

    Emergency Procedures

    • In the event of a fire, evacuate calmly; do not use elevators and avoid panic.
    • Know emergency exit locations, and ensure exits are clearly marked and unobstructed.
    • Emergency calls should provide critical information: location, identity, incident details, and number of injured persons.

    Chemical and Fire Safety

    • Fume hoods provide protection from chemical exposure by ventilating hazardous fumes.
    • The Global Harmonized System (GHS) aids in uniform classification and labelling of chemicals to ensure safety and compliance.

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    Description

    Test your knowledge on the various cell structures and their functions, including the endoplasmic reticulum, nucleus, and ribosome. This quiz will cover essential concepts related to cell biology, such as cellular organelles and their respective roles. Perfect for students studying biology at any level!

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