Question 1

A student designed an experiment to determine if air temperature had an effect on the rate of photosynthesis in corn plants.

Which tool is correctly paired with a procedure that could be used during this experiment?

Accepted Answer

a graduated cylinder to measure 30 mL of water for each plant daily

Answer

an electronic balance to measure the volume of soil in which each corn plant is grown

Answer

a metric ruler to determine the mass of each plant each week

Answer

a Celsius thermometer to determine the pH of the soil

Question 2

A student designed an experiment to determine if air temperature had an effect on the rate of photosynthesis in corn plants.

The independent variable in this experiment is the

Accepted Answer

air temperature at which the corn plants were grown

Answer

number of corn plants used

Answer

amount of carbon dioxide used by the corn plants

Answer

volume of oxygen produced by the corn plants

Question 3

The approximate number of animals that were found in June 2012 was most likely

Accepted Answer

76

Answer

86

Answer

16

Answer

26

Question 4

Which conclusion is valid based upon the data collected by the student?

Accepted Answer

https://uploads.quizalize.com/e2242f6a-50bf-40a0-5105-5c40cd08b660/question/253e070e-ef40-2582-365b-0afabaf155a3.png

Answer

https://uploads.quizalize.com/e2242f6a-50bf-40a0-5105-5c40cd08b660/question/921ff00d-b207-6ddf-745f-5a2f2d415ad4.png

Answer

https://uploads.quizalize.com/e2242f6a-50bf-40a0-5105-5c40cd08b660/question/be38aebf-2367-61db-81a1-087b4229a443.png

Answer

https://uploads.quizalize.com/e2242f6a-50bf-40a0-5105-5c40cd08b660/question/14af6e9e-01ea-67fd-d84e-d25159915b06.png

Question 5

Which conclusion is valid based upon the data collected by the student?

Accepted Answer

Catalase has the greatest activity at a $	ext{pH}$ of 7.

Answer

The change in $	ext{pH}$prevents catalase from breaking down water.

Answer

Catalase caused the greatest production of oxygen at a $	ext{pH}$of 3.

Answer

Oxygen production will increase if more water is added to the reaction.

Question 6

The 2003 Energy Star models of refrigerators use an average of about 450 kilowatt hours of electrical energy annually. Approximately how much energy is saved by these models annually when compared to the models produced in 1972?

Accepted Answer

1550 kilowatt hours

Answer

500 kilowatt hours

Answer

550 kilowatt hours

Answer

1500 kilowatt hours

Question 7

After 24 hours, the results represented by the diagram demonstrate

Accepted Answer

which of these antibiotics most effectively stopped bacterial growth

Answer

whether the bacteria were resistant to most antibiotics or not

Answer

the nutrient source that resulted in the most bacterial growth

Answer

that these bacteria were harmful to antibiotics

Question 8

In this experiment, the purpose of using a disc treated with water is that it

Accepted Answer

serves as a control for the experiment

Answer

is needed to provide additional moisture

Answer

serves as the conclusion for the experiment

Answer

is needed as a standard safety procedure

Question 9

Which technique could be used to make the structures in the cells more visible when using a compound light microscope?

Accepted Answer

staining

Answer

electrophrosis

Answer

gene manipulation

Answer

paper chromatography

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