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Characteristics of Life

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  • An animal hibernates during winter to survive. Which characteristic of life does this demonstrate?
    Growth
    Reproduction
    Homeostasis
    Adaptation
  • Muscle cells work together to form:
    An organ
    A tissue
    An organ system
    An organism
  • Robots can move, respond to commands, and perform tasks. Why are they not living?
    They grow
    They eat
    They can’t move
    They have no cells
  • You observe a mushroom growing on a log. Which characteristic of life is most clearly shown?
    Reproduction
    Adaptation and homeostasis
    Growth
    Metabolism
  • A plant moves its leaves toward light. Which two characteristics of life are demonstrated?
    Growth and reproduction
    Adaptation and homeostasis
    Response to stimuli and energy use
    Reproduction and adaptation
  • Which scenario describes something alive?
    A river flowing
    A rock breaking into smaller pieces
    A seed sprouting into a plant
    A robot assembling itself
  • Why is energy use necessary for all living organisms?
    To move only
    To perform cellular processes
    To be nonliving
    To grow taller
  • A heart is made of cells, which make up tissues, which make up the organ. What is the next level of organization?
    Tissue
    Cell
    Organism
    Organ system
  • Which is a better example of an organism: a virus or a bacterium? Why?
    Bacterium, because it can grow, reproduce, and use energy independently
    Bacterium, because it is smaller
    Virus, because it evolves
    Virus, because it reproduces only in a host
  • If an organism is made of one cell, reproduces, and uses energy, but does not respond to stimuli, is it fully alive?
    Sometimes
    No
    Only in water
    Yes
  • A plant adapts to a desert by storing water in its leaves. This is an example of:
    Adaptation
    Reproduction
    Metabolism
    Growth
  • A virus can reproduce only inside a host cell. Is it considered living?
    sometimes
    yes
    no
    only in a lab
  • Seeds can remain dormant for years and then grow. Which characteristic of life explains this?
    Growth
    Response to stimuli
    Reproduction
    Metabolism
  • Some bacteria can survive extreme temperatures. Which characteristic of life does this show?
    Reproduction
    Homeostasis
    Growth
    Adaptation
  • You find a crystal in a cave. Which characteristic of life can it demonstrate?
    Reproduction
    Response to stimuli
    Growth
    None
  • A person sweats on a hot day. This is an example of:
    Adaptation
    Energy use
    Reproduction
    Homeostasis
  • Which sequence is NOT correct from smallest to largest?
    Tissue → Cell → Organ → Organ system → Organism
    Cell → Tissue → Organ → Organism
    Cell → Tissue → Organ system → Organism
    Cell → Tissue → Organ → Organ system → Organism
  • A single-celled organism divides into two new cells. This process is:
    Reproduction
    Response to stimuli
    Metabolism
    Growth
  • Two students are arguing if a virus is alive. Which reasoning best supports it being nonliving?
    It has DNA or RNA
    It can reproduce independently
    It cannot perform metabolism or grow outside a host
    It evolves over time
  • The human digestive system includes multiple organs. Which of these is NOT part of it?
    Stomach
    Heart
    Small intestine
    Esophagus
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