Week 1 Regents Practice Recap

Mrs. Sue is planning a garden of sunflowers. Mrs. Sue read about a new multi-vitamin touted as making plants grow stronger and faster. Mrs. Sue is curious about this new multi-vitamin. She decides to split her garden into 3 sections, labeled with posts: "A" NO vitamin, "B" 1 dose of vitamin/day, "C" 1 dose of vitamin twice a day (2 total vitamin doses/day). Which of the following is accurate?

• Group A is the control group because it lacks the independent variable.

• Group A is the control group because it gets the independent variable.

• Group B is the control group because it gets the average dose of vitamin.

• Group A and B are the control groups. Group C is the experimental group because it an effective amount of the independent variable.

Answer explanation

Control groups DO NOT get the independent variable (the "thing" you are testing or that you are curious about).

For Choice "4," while group C is ONE of the experimental groups and DOES get the independent variable, there is no evidence to suggest what "dose is effective," and the rest of the statement is FALSE.

WATCH OUT FOR HALF TRUE - HALF FALSE statements!!!

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Which of the following is true about Mrs. Sue's garden experiment? Select ALL that apply

• Plant height is the independent variable.

• Plant height is the dependent variable because it's the data being collected.

• Plant height is the dependent variable because what you get for height depends on the effect of the independent variable (if the vitamin works or not).

• Group B, getting 1 vitamin dose/day, and Group C getting 2 vitamin doses/day are the experimental groups because they get the independent variable (the vitamin).

Answer explanation

Dependent variable = DATA you collect/what you measure.

Independent = what you Investigate

Which of the following is true when it comes to graphing? Select ALL that apply.

• The independent variable is usually on the Y or vertical axis

• You ONLY connect the dots of plotted data points.

• The independent variable (what you are investigating/ testing) usually is on the X (horizontal) axis.

• You should use at least half or more of the graph on the Regents

Answer explanation

Y vertical axis = Data you collect/what you measure/DEPENDENT VARIABLE

Don't just extend the lines, only make a line connecting known data points.

Use at least half or more of the graph paper (spread out data best you can)

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If plants are exposed to sunlight, then they will grow taller.
What part of the scientific method is this an example of?

• Procedure
• Hypothesis
• Question
• Results

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NGSS.MS-LS1-5

Scientific Question:  Will a person fall asleep faster if they listen to music?
What is the dependent variable?

• music

• time to fall asleep

• person

Answer explanation

Time to fall asleep is the best answer because this is what you'll be measuring (though not explicitly stated in the question). How long it takes to fall asleep depends on the effect of the music.

Music = independent variable, the thing you are investigating: Does Music help with sleep aka, does music make you fall asleep faster?

Dependent variable: What you measure (the data you collect) = time to sleep.

Independent Variable: what you are investigating, what are you testing - whether or not music makes one fall asleep.

The formal process of submitting research for examination by the scientific community if called...

• Science regents

• Scientific method

• Scientist Review

• Peer review

What is the organelle that packages and distributes materials? (it works with the ER)

• ER

• mitochondria

• cell membrane

• golgi body

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What is the name of the organelle where photosynthesis occurs in plant cells?

• vacuole

• lysosome

• chloroplast

• cell wall

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Which organelle is the arrow pointing to?

• cell membrane

• lysosome

• mitochondria

• centriole

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Why is the mitochondria known as the "powerhouse" of cells? Select ALL that apply.

• Breaks down sugar/food into usable energy called ATP.

• Mitochondria are like the motor of a car, they give cells energy by performing cellular respiration

• In many animals like puppies, kittens, goats and humans, it most often does AEROBIC cellular respiration because it uses Oxygen (O2)

• It makes proteins which give muscles strength and structure.

Answer explanation

Mitochondria often look like zippers, have double membranes, and do cellular respiration in plant and animal cells.

AERObic respiration = making ATP WITH Oxygen (O2)

Anaerobic respiration = making ATP without O2.

"ana" means without;

anorexic = without food

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