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How is a multicellular organism most different from a unicellular organism?

• Each cell performs all special functions.

• All cells perform the same special functions

• Different kinds of cells perform special functions.

• Different parts of its cells perform all special functions.

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NGSS.MS-LS1-3

If a theory is challenged by new evidence, which of the following could occur?

• The theory could be altered

• The theory is accepted, not the evidence

• The evidence is wrong

• A vote is taken to accept new evidence

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How is a scientific experiment different from other investigations?

• A procedure is followed

• Only one variable is changed

• Precision and accuracy are used to record data

• All of the above

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The following statements were taken from the procedures of four different investigations. The statement from which investigation is an example of repetition? 

• Investigation 1

• Investigation 2

• Investigation 3

• Investigation 4

What is the difference between a scientific theory and a scientific law?

• Theories are upgraded into laws once they are proven.

• Laws use mathematical explanations and theories do not

• Laws describe what happens but theories explain why or how.

• A.  Theories combine several laws into one.

Mai tells Jaz his theory about what sea turtles nest on the beach instead of in the ocean. She says, “The turtle eggs would sink to the bottom of the ocean, and the baby turtle would drown.” Mai says her uncle, a fisherman, told Mai this information. Jaz tells Mai that her theory is not scientific. Why does Mai’s idea not meet the requirement to be a scientific theory?

• Mai’s idea is already a scientific law

• Mai’s idea is not supported by scientific evidence.

• Mai’s idea is a good guess that can be tested by experiments

• Mai and her uncle are not scientists

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Ernest Rutherford developed an experiment that showed protons can pass through gold atoms untouched and/or un-deflected. Sometimes the protons were deflected by something, but this did not happen too often. Most of the atoms pass straight through. His experiment changed the way scientists viewed the structure of an atom. What conclusion did Rutherford draw from his experiment?

• The gold atoms are not close to each other

• The subatomic particles in the gold atoms are very close together

• Inside of the gold atom consists of empty spaces

• There can be no conclusion drawn from this observation

University of Florida scientists developed a new type of wound dressing that keeps bacteria out of the wound. What is a conclusion that you can make from this information?

• Scientific discoveries always lead to new technologies

• Scientists often respond to the needs in our society

• Scientific advance are always made in the field of medicine

• Scientists may make discoveries that have no impact on society

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A student is interested in the behavior of fish. He has 4 fish bowls and 20 goldfish. He puts 8 fish in the first bowl, 6 fish in the second bowl, 4 fish in the third bowl and 2 fish in the fourth bowl. He places each fish bowl under light, he keeps the temperature at 75°F for all four bowls, and he observes the behavior of the fish. What can the student find out from doing just this experiment?

• If the number of fish in the fishbowl affects the behavior of the fish

• If the temperature of the fish bowl affects the behavior of the fish

• If the temperature of the fish bowl and the amount of light affect the behavior of the fish

• If the number of fish, the temperature, and the amount of light affect the behavior of the fish.

Scientists do many types of work. Their work often includes making field observations, conducting surveys, creating models, and carrying out experiments. Which description characterizes an experiment?

• Observation of plants or animals in their natural environment

• Physical or mathematical representation of an object or process

• An organized procedure to study something under controlled conditions

• Collection of data from unregulated world for comparative purpose

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NGSS.MS-PS1-2