Mid-year Seventh Grade Life Science Exam
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The gradual change in species over time is called ...
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Taxonomy
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Homeostasis
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Evolution
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Classification
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Mid-Year Seventh Grade Life Science Exam
Quiz Preview
- 2.
How does a bacterial cell differ from a plant or animal cell?
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It is larger.
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It does not have a nucleus.
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It has no cytoplasm.
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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?
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15
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30
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45
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450
Correct Answer
A. 450 -
- 4.
Which branch of science includes the study of the stars?
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Earth and space science
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Life science
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Physical science
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Scientific literacy
Correct Answer
A. Earth and space science -
- 5.
How are photosynthesis and respiration related?
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They have opposite equations.
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They have the same equation.
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They both produce carbon dioxide.
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They both produce oxygen.
Correct Answer
A. They have opposite equations. -
- 6.
When scientists create a representation of a complex process, they are...
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Inferring
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Predicting
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Classifying
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Making models
Correct Answer
A. Making models -
- 7.
How does natural selection lead to evolution?
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Stronger offspring kill weaker members of the species.
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Helpful variations accumulate among surviving members of the species.
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Overproduction provides food for stronger members of the species.
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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...
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Mutation.
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Evolution.
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Migration.
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Variation.
Correct Answer
A. Evolution. -
- 9.
Which of the following is a valid reason why a scientist might reject a scientific theory?
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Some people disagree with it.
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It covers too broad a topic.
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New evidence contradicts it.
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It is too old.
Correct Answer
A. New evidence contradicts it. -
- 10.
What is the goal of technology?
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To produce and deliver cereal.
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To understand how the natural world functions.
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To study the natural world.
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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 ....
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Variable.
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Graph.
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Theory.
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Law.
Correct Answer
A. Graph. -
- 12.
Why do scientists organize living things into groups?
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So they can find them in the wild more easily.
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So that the organisms are easier to study.
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So they can make sense of the variety of rocks on Earth.
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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?
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Mitochondrion
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Ribosome
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Nucleus
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Chloroplast
Correct Answer
A. Nucleus -
- 14.
To survive on Earth, the first cells needed the ability to..
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Take in oxygen from the atmosphere.
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Make their own food.
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Use chemicals in their surrounding for energy.
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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...
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Are not related.
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Evolved from different ancestors.
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Have exactly the same DNA.
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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...
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Science.
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Technology
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Feedback
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Systems.
Correct Answer
A. Technology -
- 17.
What is the function of the cell membrane?
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To support the cell
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To perform different functions in each cell
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To control what enters and leaves the cell.
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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?
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Find the emergency equipment.
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Notify the teacher.
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Go to the nearest hospital.
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Start first aid treatment.
Correct Answer
A. Notify the teacher. -
- 19.
A species is a group of similar organisms that,,,
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Can mate with each other and produce fertile offspring.
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Can live together on an island.
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Can migrate to an island from the mainland.
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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...
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Infterring
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Predicting
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Classifying
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Making models
Correct Answer
A. Classifying -
- 21.
An engineer is a ...
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Legal document issued by a government that gives an inventor exclusive rights to make, use, or sell an invention for a limited time.
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Person who studies plants.
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Person trained to use both technological and scientific knowledge to solve practical problems.
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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 ...
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Manipulated variable
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Responding variable.
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Operational variable.
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Dependent variable
Correct Answer
A. Manipulated variable -
- 23.
Differences between members of the same species are called...
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Predators
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Selections
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Traits
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Variations.
Correct Answer
A. Variations. -
- 24.
A branching tree is...
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A diagram showing how scientists think different groups of organisms are related.
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A species of tree that is not closely related to other tree species.
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A drawing that shows where different animals live in a tree.
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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?
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DNA sequences
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Developmental organisms
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Homologous structures
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Punctuated equilibrium
Correct Answer
A. Homologous structures -
- 26.
A group of parts that work together is called a ....
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Technology
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System
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Process
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Feedback
Correct Answer
A. System -
- 27.
What did Darwin observe about finches in the Galapagos Islands?
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Their feathers were adapted to match their environment.
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Their beaks were adaptations related to the foods the finches ate.
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They had identical phenotypes in all locations.
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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 ....
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Pigments
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Chloroplasts
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Cholrophyll
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Stomata
Correct Answer
A. Stomata -
- 29.
What happens during respiration?
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Oxygen is released into the air.
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Glucose is broken down, releasing energy.
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Carbohydrates are released into the bloodstream
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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?
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Earth and space science
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Life science
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Physical science
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Scientific literacy
Correct Answer
A. Physical science -
- 31.
An organized way to collect and recored scientific observations is with a(n)...
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Model
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Inference
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Data table
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Operational definition
Correct Answer
A. Data table -
- 32.
What is one way in which scientists get information about the evolutionary history of species?
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By comparing organisms' body structures.
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By observing where organisms live
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By observing what organisms eat
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By studying how organisms move
Correct Answer
A. By comparing organisms' body structures. -
- 33.
What is taxonomy?
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The scientific study of how living things are classified.
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The name of Aristotle's classification system.
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The process used by geologists to classify rocks.
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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?
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To protect and support the cell
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To perform different functions in each cell
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To prevent water from passing trough it
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To prevent oxygen from entering the cell.
Correct Answer
A. To protect and support the cell -
- 35.
An organism's scientific name consists of ...
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Its class name and its family name
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Its kingdom name an dits phylum name.
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Its genus name and its species name.
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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?
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Scientists have found fossils of whale like creatures that had legs.
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Whale perform walking motions as they swim,
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Whales have similar DNA to elelphants
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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...
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Observing
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Inferring
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Predicting
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Classifying
Correct Answer
A. Observing -
- 38.
Which is the broadest classification level?
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Family
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Domain
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Phylum
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Species
Correct Answer
A. Domain -
- 39.
What theory proposes that species evolve during short periods of rapid change?
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Gradualism
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Evolution
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Absolute dating
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Punctuated equilibrium
Correct Answer
A. Punctuated equilibrium -
- 40.
What happens during cytokinesis in animal cells?
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A new round of mitosis begins.
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Two new daughter cells are formed.
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Each organelle divides into two parts.
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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...
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Had changed over time.
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Had remained the same.
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Were the result of selective breeding.
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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?
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Gradualism
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Relative dating
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Natural selection
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Punctuated equilibrium
Correct Answer
A. Gradualism -
- 43.
What are the products of photosynthesis?
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Carbon dioxide and water
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Oxygen and water.
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Carbon dioxide and sugars.
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Oxygen and sugars.
Correct Answer
A. Oxygen and sugars. -
- 44.
The result or product of a process is called a(n)
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Input
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Output
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Goal
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Feedback
Correct Answer
A. Output -
- 45.
The regular cycle of growth and division that cells undergo is called...
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Replication
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The cell cycle.
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Interphase.
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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?
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Osmosis
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Diffusion
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Active transport
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Passive transport
Correct Answer
A. Active transport -
- 47.
A change in an organism's surroundings that causes it to react is called....
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A response
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A stimulus
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Energy
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Development
Correct Answer
A. A stimulus -
- 48.
Which of the following do all living things need to survive?
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Water
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Oxygen
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Sunlight
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Carbon dioxide
Correct Answer
A. Water -
- 49.
A DNA molecule is shaped like a ...
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Long, thin rod.
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Spiral staircase
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Straight ladder
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Triple helix
Correct Answer
A. Spiral staircase -
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Current Version
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Jan 22, 2015Quiz Edited by
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Jan 04, 2015Quiz Created by
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