Science Final Quiz
16 Questions
9 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the definition of a virus?

  • A tiny cell that contains only nucleic acid
  • A tiny cell that contains nucleic acid and protein
  • A tiny particle that contains nucleic acid encased in protein (correct)
  • A tiny particle that contains protein encased in nucleic acid

    • How can viruses be seen even though they are so small?

  • By using an electron microscope that uses a beam of electrons (correct)
  • By using a microscope with a powerful lens
  • By using a regular microscope with a flashlight
  • By using a telescope with a powerful zoom

    • What is the characteristic of living things that viruses lack?

  • Being made up of cells (correct)
  • The ability to move
  • The ability to reproduce
  • The ability to respond to stimuli

    • How do vaccines work?

    <p>By imitating an infection to engage the body's natural defenses</p> Signup and view all the answers

    What is the term for a bacterial cell dividing into two identical daughter cells?

    <p>Binary Fission</p> Signup and view all the answers

    What is the purpose of an endospore?

    <p>To protect bacteria from extreme heat or harsh conditions</p> Signup and view all the answers

    What are antibiotics used for?

    <p>To kill harmful bacteria</p> Signup and view all the answers

    What shape and configuration do bacteria names often indicate?

    <p>Shape and group</p> Signup and view all the answers

    What is one way bacteria help the environment?

    <p>By helping to clean the environment</p> Signup and view all the answers

    What are the three main parts of seed plants?

    <p>Roots, stems, and leaves</p> Signup and view all the answers

    What is necessary for all plants to survive?

    <p>Soil, water, sunlight, air, and space</p> Signup and view all the answers

    How do seedless plants reproduce?

    <p>Through spores</p> Signup and view all the answers

    What is the process by which plants transport water from roots to leaves?

    <p>Capillary action and transpiration</p> Signup and view all the answers

    What is the role of bacteria in the ecosystem?

    <p>To repopulate ecosystems after natural disasters</p> Signup and view all the answers

    What is the chemical formula for photosynthesis?

    <p>6CO2 + 6H2O → C6H12O6 + 6O2</p> Signup and view all the answers

    How can you determine the age of a tree?

    <p>By counting by 2</p> Signup and view all the answers

    Study Notes

    Viruses

    • A virus is a tiny particle that contains nucleic acid encased in protein.
    • Viruses can be seen using an electron microscope, which uses a beam of electrons instead of light to detect objects.
    • Viruses are nonliving because they are not made of cells, one of the main characteristics of living things.

    Viruses and the World

    • Vaccines work by imitating an infection to engage the body's natural defenses.

    Bacteria

    Structure of Bacteria

    • Different bacteria shapes and groups include:
      • Spherical (Cocci)
      • Rod-shaped (Bacilli)
      • Spiral-shaped (Spirilla)
      • Comma-shaped (Vibrio)
    • Be able to identify a bacteria's shape and configuration by its name.

    Bacteria Life Functions

    • Bacteria reproduce when conditions are right, such as:
      • Plenty of food available
      • Environment is favorable
    • Bacteria reproduce by:
      • Binary Fission – Cell division in which one cell splits into 2 identical daughter cells
      • Budding – Asexual reproduction in which a small outgrowth of the parent develops into independent organisms
    • An endospore is a protective covering that protects bacteria from extreme heat or other harsh conditions.

    Bacteria and Humans

    • Antibiotics are drugs that kill harmful bacteria and can be used for medicine, adhesives, and food.
    • Bacteria help people by:
      • Being an important part of the food chain
      • Helping repopulate ecosystems after natural disasters
      • Maintaining the oxygen balance in the atmosphere
      • Being important members of symbiotic relationships
      • Helping clean the environment
      • Helping make food
      • Helping keep us healthy
      • Being genetically engineered to help us
      • Helping bring justice

    Bacteria and Disease

    • Familiarize yourself with the bacteria that cause specific diseases.

    Introduction to Plants

    Types of Plants

    • Seedless plants reproduce through spores.
    • Examples of nonvascular plants include:
      • Mosses
      • Hornworts
      • Liverworts

    Needs of Plants

    • All plants need to survive:
      • Soil
      • Water
      • Sunlight
      • Air
      • Space
      • The right temperature

    Seed Plants

    • The 3 main parts of seed plants are:
      • Roots
      • Stems
      • Leaves
    • Be able to differentiate between monocots and dicots.
    • Determine the age of a tree by counting the rings.

    Plant Activity

    Life Processes of Plants

    • Label the diagram of photosynthesis.
    • Know the chemical formula for photosynthesis.
    • Steps of plant transport:
      1. Root Pressure
      2. Capillary Action
      3. Transpiration
    • Water molecules enter the root faster than they can leave, causing pressure to build up in the xylem and forcing water to move up to the stem.

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser