Cumulative Exam Answers

Which question is the best scientific question?

In an experiment to test a new drug’s effectiveness, one group is given a larger dosage than is typically prescribed, and a second group is given a smaller dosage than is typically prescribed. Then, the results of the groups are compared to each other. What is missing that would improve this scientific design?

A scientist is studying the effect on human health of bacteria that live in the human intestine. In her study, she found that the bacteria actually help the body’s immune response. To develop scientific consensus about her idea, the scientist should

Read the following question.“How fast do hummingbirds fly?”Why is the question a scientific question?

What is the purpose of controlling the environment when testing a hypothesis?

What is another term for the manipulated variable?

Polio is a disease that can cause paralysis. Doctors treated patients with casts and braces, but the work of Elizabeth Kenny led to the use of hot baths and exercise to treat polio victims. These patients had less incidence of paralysis. Kenny’s ideas and their acceptance were due to

What is the safest way to carry a microscope?

A lab investigation involves using food coloring to track diffusion. Which action should students take to avoid damaging their clothing?

Omar studies the effects of a drought on the depth of water in a pond. He takes a reading of the water depth at the same location in the pond every day for the duration of the drought. Which method of displaying data would he most likely use to show changes in water depth?

The photograph shows an outdoor scene.Which topic related to the photograph would most likely be studied by a biologist?

Which characteristic best distinguishes quantitative data from qualitative data?

Some theories are developed from repeated testing of a single hypothesis. Cell theory, germ theory, and the theory of evolution all have developed from the testing of multiple related hypotheses. Which statement best explains why some theories develop this way?

Which is the best description of biology?

Derek needs a tool that delivers 5.00 mL of a sodium hydroxide solution. Which tool would be best for him to use?

Rebekah finds that a solution of sugar in water has a volume of 1.32 fl. oz. How should she report this amount using the metric system? (1 fl. oz. = 29.6 mL)

Which statement describes the independent variable?

Gregor Mendel demonstrated that traits are passed from parents to offspring independently of one another under all circumstances that he tested. All other genetics researchers have observed this as well. Based on this information, the statement can be made that “traits are passed from parents to offspring independently of one another.” Which describes the statement of fact?

What is the scientific method?

Louis Pasteur developed the germ theory of disease, which states that many diseases are caused by microorganisms. Had scientists been skeptical but not open-minded about the idea,

Most scientific questions are based on

Which is the best reason for using a temperature probe instead of a simple laboratory thermometer?

A testable hypothesis could be formed from which question?

A student uses paper towels to clean up a small chemical spill in the lab. Where should the dirty paper towels be placed?

John doesn’t think that skepticism should play an important role in the scientific process. He says that skepticism interferes with scientific consensus. Which statement best describes John’s conclusion?

How should you test a hypothesis?

Carlos is heading a student council project to improve cafeteria meals. He surveyed all students who eat cafeteria lunches to find out which of the five weekly cafeteria options they like least. What steps should Carlos take to best display this data?

What do hypotheses, theories, and laws have in common?

Max wants to see if mice that are fed food A grow faster than mice that are fed food B. He measures the mass of the mice each day. He feeds each group the same amount of food at the same time each day. What is the dependent variable?

Look at this picture.What is a scientific question that could be asked about the picture?

The photograph shows a herd of zebra in the African savanna.What is the highest level of organization that is represented in the photograph?

What is a caliper used for?

Which tool is used to measure a single, specific volume of liquid?

Which is the correct order in the scientific process?

Lee and Celia are lab partners. While Celia pours a chemical into a graduated cylinder, some of the chemical splashes onto her arm. What should happen next?

Choose the best scientific design to test the question “Which soil type results in the highest yield of tomatoes: clay soil or sandy soil?”

Which action is designed to increase the safety of a person carrying a microscope from one place to another?

The development of a new experimental method is most likely to change a theory if it makes it possible to

Silus wants to monitor the temperature of a reaction every 0.5 seconds for 30 minutes. He plans to generate a graph of the temperature values over time and insert the graph into a text document. Which pair of tools would be best for Silus to use?

Which occurs directly before forming a hypothesis?

Which is usually the best way to present or communicate inferred data?

Nydia gathered data by observing the cross section of the tree trunk that is shown below.Nydia noted all the information below. Which statement gives quantitative data?

Which tool would be likely to provide the most accurate measurement of time in a laboratory experiment involving sprinting times of students?

Which situation would most likely be the concern of a biologist?

Which list best describes what should be worn by students in a biology lab where pouring chemicals into beakers is involved?

Tim makes a volcano demonstration for a class. He crafts the volcano out of clay, and then pours vinegar into the baking soda that is inside the volcano. What would be the best way for Tim to turn this demonstration into an experiment?

Which best describes an idea that has scientific consensus?

How does a law differ from a theory?

Mario at lab table A needs a pair of forceps (tweezers). Max at lab table B tosses Mario a pair. In terms of laboratory safety, which best describes Max’s behavior?

Which situation would result in a theory being replaced rather than revised?