Mid-year Seventh Grade Life Science Exam

75 Questions | Attempts: 47
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  • 1/75 Questions

    The gradual change in species over time is called ...

    • Taxonomy
    • Homeostasis
    • Evolution
    • Classification
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Mid-Year Seventh Grade Life Science Exam

Mid-year Seventh Grade Life Science Exam - Quiz

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  • 2. 

    How does a bacterial cell differ from a plant or animal cell?

    • It is larger.

    • It does not have a nucleus.

    • It has no cytoplasm.

    • It has no organelles.

    Correct Answer
    A. It does not have a nucleus.
  • 3. 

    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?

    • 15

    • 30

    • 45

    • 450

    Correct Answer
    A. 450
  • 4. 

    Which branch of science includes the study of the stars?

    • Earth and space science

    • Life science

    • Physical science

    • Scientific literacy

    Correct Answer
    A. Earth and space science
  • 5. 

    How are photosynthesis and respiration related?

    • They have opposite equations.

    • They have the same equation.

    • They both produce carbon dioxide.

    • They both produce oxygen.

    Correct Answer
    A. They have opposite equations.
  • 6. 

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

    • Inferring

    • Predicting

    • Classifying

    • Making models

    Correct Answer
    A. Making models
  • 7. 

    How does natural selection lead to evolution?

    • Stronger offspring kill weaker members of the species.

    • Helpful variations accumulate among surviving members of the species.

    • Overproduction provides food for stronger members of the species.

    • Environmental changes favor weaker members of the species.

    Correct Answer
    A. Helpful variations accumulate among surviving members of the species.
  • 8. 

    The gradual change in a species over time is called...

    • Mutation.

    • Evolution.

    • Migration.

    • Variation.

    Correct Answer
    A. Evolution.
  • 9. 

    Which of the following is a valid reason why a scientist might reject a scientific theory?

    • Some people disagree with it.

    • It covers too broad a topic.

    • New evidence contradicts it.

    • It is too old.

    Correct Answer
    A. New evidence contradicts it.
  • 10. 

    What is the goal of technology?

    • To produce and deliver cereal.

    • To understand how the natural world functions.

    • To study the natural world.

    • To improve the way people live.

    Correct Answer
    A. To improve the way people live.
  • 11. 

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

    • Variable.

    • Graph.

    • Theory.

    • Law.

    Correct Answer
    A. Graph.
  • 12. 

    Why do scientists organize living things into groups?

    • So they can find them in the wild more easily.

    • So that the organisms are easier to study.

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

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

    Correct Answer
    A. So that the organisms are easier to study.
  • 13. 

    Which organelle is the control center of a cell?

    • Mitochondrion

    • Ribosome

    • Nucleus

    • Chloroplast

    Correct Answer
    A. Nucleus
  • 14. 

    To survive on Earth, the first cells needed the ability to..

    • Take in oxygen from the atmosphere.

    • Make their own food.

    • Use chemicals in their surrounding for energy.

    • Combine to form multicellular organsims.

    Correct Answer
    A. Use chemicals in their surrounding for energy.
  • 15. 

    If two organisms look very similar during their early stages of development, this is evidence that the organisms...

    • Are not related.

    • Evolved from different ancestors.

    • Have exactly the same DNA.

    • Evolved from a common ancestor.

    Correct Answer
    A. Evolved from a common ancestor.
  • 16. 

    The way in which people change the world around them to meet their needs or solve practical problems is called...

    • Science.

    • Technology

    • Feedback

    • Systems.

    Correct Answer
    A. Technology
  • 17. 

    What is the function of the cell membrane?

    • To support the cell

    • To perform different functions in each cell

    • To control what enters and leaves the cell.

    • To form a hard outer covering for the cell.

    Correct Answer
    A. To control what enters and leaves the cell.
  • 18. 

    What is the first thing you should do if an accident occurs?

    • Find the emergency equipment.

    • Notify the teacher.

    • Go to the nearest hospital.

    • Start first aid treatment.

    Correct Answer
    A. Notify the teacher.
  • 19. 

    A species is a group of similar organisms that,,,

    • Can mate with each other and produce fertile offspring.

    • Can live together on an island.

    • Can migrate to an island from the mainland.

    • All have exactly the same traits.

    Correct Answer
    A. Can mate with each other and produce fertile offspring.
  • 20. 

    When scientists put things into categories or group together items that are alike in some way, they are...

    • Infterring

    • Predicting

    • Classifying

    • Making models

    Correct Answer
    A. Classifying
  • 21. 

    An engineer is a ...

    • Legal document issued by a government that gives an inventor exclusive rights to make, use, or sell an invention for a limited time.

    • Person who studies plants.

    • Person trained to use both technological and scientific knowledge to solve practical problems.

    • Possible explanation for a set of observations or answer to a scientific question.

    Correct Answer
    A. Person trained to use both technological and scientific knowledge to solve practical problems.
  • 22. 

    During an experiment, if you purposely change the temperature to test a hypotheses, the temperature is called the ...

    • Manipulated variable

    • Responding variable.

    • Operational variable.

    • Dependent variable

    Correct Answer
    A. Manipulated variable
  • 23. 

    Differences between members of the same species are called...

    • Predators

    • Selections

    • Traits

    • Variations.

    Correct Answer
    A. Variations.
  • 24. 

    A branching tree is...

    • A diagram showing how scientists think different groups of organisms are related.

    • A species of tree that is not closely related to other tree species.

    • A drawing that shows where different animals live in a tree.

    • A homologous structure that many plants have.

    Correct Answer
    A. A diagram showing how scientists think different groups of organisms are related.
  • 25. 

    Which term refers to similar structures that related species have inherited from a common ancestor?

    • DNA sequences

    • Developmental organisms

    • Homologous structures

    • Punctuated equilibrium

    Correct Answer
    A. Homologous structures
  • 26. 

    A group of parts that work together is called a ....

    • Technology

    • System

    • Process

    • Feedback

    Correct Answer
    A. System
  • 27. 

    What did Darwin observe about finches in the Galapagos Islands?

    • Their feathers were adapted to match their environment.

    • Their beaks were adaptations related to the foods the finches ate.

    • They had identical phenotypes in all locations.

    • They had identical genotypes in all locations.

    Correct Answer
    A. Their beaks were adaptations related to the foods the finches ate.
  • 28. 

    Carbon dioxide enters plants through the ....

    • Pigments

    • Chloroplasts

    • Cholrophyll

    • Stomata

    Correct Answer
    A. Stomata
  • 29. 

    What happens during respiration?

    • Oxygen is released into the air.

    • Glucose is broken down, releasing energy.

    • Carbohydrates are released into the bloodstream

    • Water and carbon dioxide are converted into energy.

    Correct Answer
    A. Glucose is broken down, releasing energy.
  • 30. 

    Which branch of science includes the study of magnetism?

    • Earth and space science

    • Life science

    • Physical science

    • Scientific literacy

    Correct Answer
    A. Physical science
  • 31. 

    An organized way to collect and recored scientific observations is with a(n)...

    • Model

    • Inference

    • Data table

    • Operational definition

    Correct Answer
    A. Data table
  • 32. 

    What is one way in which scientists get information about the evolutionary history of species?

    • By comparing organisms' body structures.

    • By observing where organisms live

    • By observing what organisms eat

    • By studying how organisms move

    Correct Answer
    A. By comparing organisms' body structures.
  • 33. 

    What is taxonomy?

    • The scientific study of how living things are classified.

    • The name of Aristotle's classification system.

    • The process used by geologists to classify rocks.

    • The process of observing an organism's behavior

    Correct Answer
    A. The scientific study of how living things are classified.
  • 34. 

    What is the function of the cell wall?

    • To protect and support the cell

    • To perform different functions in each cell

    • To prevent water from passing trough it

    • To prevent oxygen from entering the cell.

    Correct Answer
    A. To protect and support the cell
  • 35. 

    An organism's scientific name consists of ...

    • Its class name and its family name

    • Its kingdom name an dits phylum name.

    • Its genus name and its species name.

    • Its phylum name and its species name.

    Correct Answer
    A. Its genus name and its species name.
  • 36. 

    What evidence suggests that the ancestors of whales once walked on land?

    • Scientists have found fossils of whale like creatures that had legs.

    • Whale perform walking motions as they swim,

    • Whales have similar DNA to elelphants

    • Whales breathe trough lungs.

    Correct Answer
    A. Scientists have found fossils of whale like creatures that had legs.
  • 37. 

    Using one or more of your senses to gather information is called...

    • Observing

    • Inferring

    • Predicting

    • Classifying

    Correct Answer
    A. Observing
  • 38. 

    Which is the broadest classification level?

    • Family

    • Domain

    • Phylum

    • Species

    Correct Answer
    A. Domain
  • 39. 

    What theory proposes that species evolve during short periods of rapid change?

    • Gradualism

    • Evolution

    • Absolute dating

    • Punctuated equilibrium

    Correct Answer
    A. Punctuated equilibrium
  • 40. 

    What happens during cytokinesis in animal cells?

    • A new round of mitosis begins.

    • Two new daughter cells are formed.

    • Each organelle divides into two parts.

    • A cell plate forms in the middle of the cell.

    Correct Answer
    A. Two new daughter cells are formed.
  • 41. 

    Darwin concluded that organisms on the Galapagos Islands...

    • Had changed over time.

    • Had remained the same.

    • Were the result of selective breeding.

    • Had no variations.

    Correct Answer
    A. Had changed over time.
  • 42. 

    What theory proposes that evolution occurs steadily in tiny changes over long periods of time?

    • Gradualism

    • Relative dating

    • Natural selection

    • Punctuated equilibrium

    Correct Answer
    A. Gradualism
  • 43. 

    What are the products of photosynthesis?

    • Carbon dioxide and water

    • Oxygen and water.

    • Carbon dioxide and sugars.

    • Oxygen and sugars.

    Correct Answer
    A. Oxygen and sugars.
  • 44. 

    The result or product of a process is called a(n)

    • Input

    • Output

    • Goal

    • Feedback

    Correct Answer
    A. Output
  • 45. 

    The regular cycle of growth and division that cells undergo is called...

    • Replication

    • The cell cycle.

    • Interphase.

    • Mitosis.

    Correct Answer
    A. The cell cycle.
  • 46. 

    Which term refers to the movement of materials through a cell membrane by using the cell's energy?

    • Osmosis

    • Diffusion

    • Active transport

    • Passive transport

    Correct Answer
    A. Active transport
  • 47. 

    A change in an organism's surroundings that causes it to react is called....

    • A response

    • A stimulus

    • Energy

    • Development

    Correct Answer
    A. A stimulus
  • 48. 

    Which of the following do all living things need to survive?

    • Water

    • Oxygen

    • Sunlight

    • Carbon dioxide

    Correct Answer
    A. Water
  • 49. 

    A DNA molecule is shaped like a ...

    • Long, thin rod.

    • Spiral staircase

    • Straight ladder

    • Triple helix

    Correct Answer
    A. Spiral staircase

Quiz Review Timeline (Updated): Jan 22, 2015 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Jan 22, 2015
    Quiz Edited by
    ProProfs Editorial Team
  • Jan 04, 2015
    Quiz Created by
    Colleen Zeiss
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