Mid-year Seventh Grade Life Science Exam

75 Questions | Total Attempts: 45

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Mid-year Seventh Grade Life Science Exam

Mid-Year Seventh Grade Life Science Exam


Questions and Answers
  • 1. 
    Please note that up to 25 points will be added to the 75 obtained here for your FINAL EXAM GRADE. 
  • 2. 
    Please select the BEST answer. 
  • 3. 
    The gradual change in species over time is called ...
    • A. 

      Taxonomy

    • B. 

      Homeostasis

    • C. 

      Evolution

    • D. 

      Classification

  • 4. 
    Making a forecast of what will happen in the future based on past experience or evidence is called ...
    • A. 

      Observing.

    • B. 

      Inferring.

    • C. 

      Predicting.

    • D. 

      Classifying.

  • 5. 
    How does a bacterial cell differ from a plant or animal cell?
    • A. 

      It is larger.

    • B. 

      It does not have a nucleus.

    • C. 

      It has no cytoplasm.

    • D. 

      It has no organelles.

  • 6. 
    Which term refers to the diffusion of water molecules through a selectively permeable membrane?
    • A. 

      Osmosis

    • B. 

      Engulfing

    • C. 

      Active transport

    • D. 

      Passive transport

  • 7. 
    Which of the following is an example of thinking scientifically about a topic?
    • A. 

      Finding out how bicycles work.

    • B. 

      Reading a consumer report about bicycles.

    • C. 

      Evaluating the cost of bicycles.

    • D. 

      Investigating the invention of bicycles.

  • 8. 
    What is the total magnification of a microscope with two lenses when one lens has a magnification of 15, and the other has a magnification of 30?
    • A. 

      15

    • B. 

      30

    • C. 

      45

    • D. 

      450

  • 9. 
    The stage of respiration that releases most of the energy in glucose occurs in the....
    • A. 

      Nucleus

    • B. 

      Chloroplast

    • C. 

      Cytoplasm

    • D. 

      Mitochondria

  • 10. 
    Unlike the cell wall, the cell membrane...
    • A. 

      Is found in all cells.

    • B. 

      Is made of chromatin

    • C. 

      Protects the nucleus with a rigid layer of cellulose.

    • D. 

      Produces energy for the cell.

  • 11. 
    Which branch of science includes the study of the stars?
    • A. 

      Earth and space science

    • B. 

      Life science

    • C. 

      Physical science

    • D. 

      Scientific literacy

  • 12. 
    How are photosynthesis and respiration related?
    • A. 

      They have opposite equations.

    • B. 

      They have the same equation.

    • C. 

      They both produce carbon dioxide.

    • D. 

      They both produce oxygen.

  • 13. 
    The more classification levels that two organisms share
    • A. 

      The closer together on Earth they live.

    • B. 

      The easier it is to them apart.

    • C. 

      The more characteristics they have in common.

    • D. 

      The more distantly related they are.

  • 14. 
    When scientists create a representation of a complex process, they are...
    • A. 

      Inferring

    • B. 

      Predicting

    • C. 

      Classifying

    • D. 

      Making models

  • 15. 
    A trait that helps an organism survive and reproduce is called a(n)...
    • A. 

      Mutation

    • B. 

      Selection

    • C. 

      Adaptation

    • D. 

      Variation

  • 16. 
    How does natural selection lead to evolution?
    • A. 

      Stronger offspring kill weaker members of the species.

    • B. 

      Helpful variations accumulate among surviving members of the species.

    • C. 

      Overproduction provides food for stronger members of the species.

    • D. 

      Environmental changes favor weaker members of the species.

  • 17. 
    Observations that deal with descriptions that cannot be expressed in numbers are called...
    • A. 

      Manipulated observations.

    • B. 

      Quantitative observations.

    • C. 

      Qualitative observations.

    • D. 

      Operational observations.

  • 18. 
    The gradual change in a species over time is called...
    • A. 

      Mutation.

    • B. 

      Evolution.

    • C. 

      Migration.

    • D. 

      Variation.

  • 19. 
    Which of the following is a valid reason why a scientist might reject a scientific theory?
    • A. 

      Some people disagree with it.

    • B. 

      It covers too broad a topic.

    • C. 

      New evidence contradicts it.

    • D. 

      It is too old.

  • 20. 
    What is the goal of technology?
    • A. 

      To produce and deliver cereal.

    • B. 

      To understand how the natural world functions.

    • C. 

      To study the natural world.

    • D. 

      To improve the way people live.

  • 21. 
    One useful tool that may help a scientist interpret data by revealing unexpected patterns is a ....
    • A. 

      Variable.

    • B. 

      Graph.

    • C. 

      Theory.

    • D. 

      Law.

  • 22. 
    Why do scientists organize living things into groups?
    • A. 

      So they can find them in the wild more easily.

    • B. 

      So that the organisms are easier to study.

    • C. 

      So they can make sense of the variety of rocks on Earth.

    • D. 

      So products from living things can be easily found in groceries.

  • 23. 
    What theory proposes that species evolve during short periods of rapid change?
    • A. 

      Gradualism

    • B. 

      Evolution

    • C. 

      Absolute dating

    • D. 

      Punctuated equilibrium

  • 24. 
    What happens during cytokinesis in animal cells?
    • A. 

      A new round of mitosis begins.

    • B. 

      Two new daughter cells are formed.

    • C. 

      Each organelle divides into two parts.

    • D. 

      A cell plate forms in the middle of the cell.

  • 25. 
    Which domain(s) include(s) only prokaryotes?
    • A. 

      Bacteria and Archaea

    • B. 

      Bacteria only

    • C. 

      Archaea only

    • D. 

      Eukarya only

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