CELLS AND SCIENTIFIC INQUIRY

A series of steps used by scientists to solve a problem or answer a question.

• scientific method

• recipe

• data collection

• metric system

Tags

NGSS.MS-PS2-2

Which of these contains steps in the right order?

• Ask a question, state your hypothesis, research, experiment, analyze, make a conclusion

• State your hypothesis, ask a question, research, experiment, analyze, make a conclusion

• Ask a question, research, state your hypothesis, experiment, analyze, make a conclusion

• State your hypothesis, ask a question, research, make a conclusion, experiment, analyze

Carmen conducted an experiment to determine if listening to different types of music would affect a person's pulse. Her hypothesis was that pulse rate would change with different types of music. Each person listened to seven different selections of music for 30 seconds each. Each person's pulse was taken before the music and then after each 30-second interval of music. The pulses were taken again after the music selections were completed. Based on her experiment, Carmen concluded that a person’s pulse rate changed when the person listened to different types of music.

Which component is missing from Carmen’s experiment?

• a question

• a hypothesis

• a control group

• a description of the experiment

In an appropriately designed experiment, a scientist is able to test the effect of

• a single variable

• multiple variables

• the hypothesis

• scientific observations

Tags

NGSS.MS-PS2-2

An experiment was carried out to determine whether drinking caffeinated soda increases pulse rate. The pulse rates of two groups of people at rest were measured. Group A was then given caffeinated soda and group B was given caffeine-free soda. One hour after drinking the soda, the pulse rates were measured. The participants in the experiment were all the same age, and they were all given the same amount of soda. The dependent variable in this experiment is the

• type of soda given to each group

• amount of soda given to each group

• pulse rate of each group

• age of participants in each group

What is the name of the structure labeled #4?

• stage

• course adjustment knob

• fine adjustment knob

• aperture

What is the function of the structure labeled #10?

• controls amount of light that passesthrough the slide

• it is used to it holds that slide in placechange the magnification ofthe object

• it holds that slide in place

• it is an object lens that is nearest the specimen/object on the stage that is used to magnify the object

A microscope has an ocular magnification of 10 and a high power objective magnification of 50. What is the highest total magnification of the microscope?

• 500x

• 400x

• 50x

• 40x

Which organelle is correctly paired with its function?

• lysosome - synthesize carbohydrates

• mitochondria - synthesize proteins

• chloroplast - site for photosynthesis

• nucleus - site for cellular respiration

Tags

NGSS.MS-LS1-2

Which of the following conclusions can be drawn from this graph?

• The best pH for the highest percent of maximum activity is 6.6.

• The best pH for the highest percent of maximum activity is 5.8.

• The percent of maximum activity increases as pH increases from 5.0 to 9.0

• The percent of maximum activity is highest around a pH of 9.0

Tags

NGSS.MS-PS1-2