Biology: Characteristics of Life
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Questions and Answers

Which branch of biology focuses on the study of fishes?

  • Mammalogy
  • Ichthyology (correct)
  • Helminthology
  • Arachnology
  • What does biochemistry primarily explain?

  • The evolution of species
  • The classification of species
  • The chemical reactions in living organisms (correct)
  • The physical structures of cells
  • Which branch of biology deals with the study of worms?

  • Malacology
  • Helminthology (correct)
  • Ornithology
  • Dendrology
  • Which field of study encompasses algae?

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

    What aspect does physiology study?

    <p>The functions and processes of organs</p> Signup and view all the answers

    What is the primary purpose of reproduction in organisms?

    <p>To ensure the continuity of life</p> Signup and view all the answers

    Which characteristic of life involves responding to environmental changes?

    <p>Sensitivity to stimuli</p> Signup and view all the answers

    What process allows organisms to maintain stable internal conditions?

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

    What does growth in organisms refer to?

    <p>Increase in size or mass</p> Signup and view all the answers

    Why is energy processing essential for organisms?

    <p>To support biological functions and activities</p> Signup and view all the answers

    What is the smallest functional unit of life?

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

    Which process completely eliminates all forms of microorganisms?

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

    What defines an organ in biological terms?

    <p>A group of tissues working together for a specialized function</p> Signup and view all the answers

    Which of the following statements about disinfection is true?

    <p>It significantly reduces the number of harmful microorganisms.</p> Signup and view all the answers

    In which of the following scenarios would sterilization be most appropriate?

    <p>Preparing a surgical tool</p> Signup and view all the answers

    Study Notes

    Characteristics of Life

    • Sensitivity or Response to Stimuli: Organisms react to environmental changes, crucial for survival and adaptation. This includes responses to light, temperature, sound, touch, and chemicals.

    • Reproduction: Organisms can reproduce, ensuring genetic transfer to offspring, which is vital for species continuity and survival.

    • Growth and Development: Involves both increase in size/mass (growth) and structural/function changes (development), enabling adaptation to various environments.

    • Homeostasis: The ability to maintain internal stability despite external changes is essential for survival, regulating crucial internal functions within narrow limits.

    • Energy Processing: Organisms utilize energy for physiological activities, essential for supporting biological functions.

    Branches of Biology

    • Helminthology (⚪️): Study of worms.
    • Ornithology (🐦): Study of birds.
    • Arachnology (❤️): Study of arachnids (eight-legged organisms).
    • Biochemistry (🧬): Examines chemical reactions in living organisms.
    • Organology (⚪️): Focuses on organs within organisms.
    • Physiology (➡️): Studies functions and processes of organs.
    • Evolution (➡️): Focus on the change in species over time.
    • Systematics (⬅️): Concerned with naming and classifying organisms.
    • Natural History (😮): Study of living things and their environments.
    • Phycology (⬜️): Study of algae.
    • Dendrology (❌): Study of trees.
    • Malacology (🌟): Study of mollusks.
    • Ichthyology (🔼): Study of fishes.
    • Mammalogy (💎): Study of mammals.
    • Microbiology (🔽): Study of microorganisms.

    Levels of Biological Organization

    • Chemical: Atoms and molecules are the basic units of life (e.g., carbohydrates, proteins).

    • Cell: The smallest functional unit of life, exemplified by skin cells.

    • Organ: Composed of tissue groups performing specialized functions (e.g., lungs and heart).

    Sterilization vs Disinfection

    • Sterilization: A process that completely eradicates all life forms, including bacteria and viruses; important in medical settings (e.g., surgical tools, food processing for canned goods).

    • Disinfection: Reduces harmful microorganisms significantly but does not eliminate all; used in cleaning surfaces and sanitizing food.

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    Description

    This quiz explores the essential characteristics of life, focusing on sensitivity to stimuli and reproduction. Understand how these traits contribute to the survival and adaptation of living organisms. Test your knowledge of the fundamental processes that define life.

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