Unit 1 - The Science of Biology Test Review

What are the roles of test groups in scientific investigation?

• Both are experimental groups, and each individually show the effects of an experiment.

• One is the experimental group and one is the control group, and together they show the effects of an experiment.

• Both are control groups, but only the control group shows the effects of an experiment.

• Both are experimental groups, but only the experimental group shows the effects of an experiment.

Your friend, Alfred, conducts an experiment once and asks if his hypothesis should be classified as a theory. Which is the best response to Alfred’s question?

• Yes, because his data supports the hypothesis.

• Yes, but only if additional experiments show similar results.

• No, because the experiment did not provide enough data to support the hypothesis.

• No, because a theory is a highly reliable explanation that incorporates many well-tested hypotheses and evidences.

Cell theory has become the central organizing principle of biological science. Could this scientific theory ever become a scientific law?

• Yes, if scientists decide that enough evidence supports the theory.

• Yes, if the theory is shown to predict future events.

• No, because a theory is a complex explanation that does not become a law.

• No, because a theory can be proven correct while a law cannot be proven.

After a team of scientists completes an investigation, they submit an article about the investigation to a scientific journal. Before the journal publishes the article, they send it to other scientists for an anonymous, independent review. What is the purpose of this peer review?

• To evaluate the methods, and validate the results of the investigation

• To guarantee that the conclusions of the investigation are absolutely correct

• To make sure the investigation has practical, economic benefits

• To improve the appeal of the article to the general public

Testing hypotheses often involves designing experiments. Which of the following is the factor that is observed and measured in an experiment?

• Control group

• Experimental group

• Dependent variable

• Independent variable

Tags

NGSS.MS-PS2-2

During the earthworm behavior lab, we observed and recorded written data describing earthworm responses to different stimuli. What kind of data was this considered?

• Quantitative measurements

• Testing a control group.

• Qualitative observations.

• None of the above.

Tamar is talking about evolution with a friend. The friend says, “It’s just a theory, so I don’t believe it. When they prove it and it becomes the law of evolution, then maybe I’ll change my mind.” Which of these possible replies best describes scientific principles or the work of scientists?

• Scientific theories do not become scientific laws; they are explanations for natural phenomena based on evidence.

• Science always finds the right answer; the answers that scientists and researchers discover never change.

• He should be wary of science because it is based on bias and opinion, not research and evidence.

• Scientists always take each other at their word regarding experimental results, and the public should, too.

Tags

NGSS.HS-LS4-1

You wanted to study the organelles inside of a single-celled algae. To look at the mitochondria of the already dead algae, which is the best type of microscope you should use?

• TEM (Transmission Electron Microscope)

• SEM (Scanning Electron Microscope)

• Compound Light Microscope

• Dissecting Microscope

In the earthworm behavior lab, we were trying to determine how well earthworms taxis behavior to different stimuli. We used different types of stimuli (water, vinegar, and light) and observed the response of the earthworms. Which of the following best describes the independent variable in this experiment?

• The response of the earthworms.

• The positive and negative movement of the earthworms.

• There was no independent variable.

• The different types of stimuli.

Which of the following best describes the three parts of the cell theory?

• All living things are made up of one or more cells, the cell is the basic unit of structure, and all cells are spontaneously generated.

• All living things are made up of one or more cells, the cell is the basic unit of structure, and all cells come from pre-existing cells.

• All living things are made up of more than two cells, the cell is the basic unit of structure, and all cells come from pre-existing cells.

• None of the above.