Free Printable Biology Intro Unit 1 Test Review

1.

Deja and Zhi conducted an experiment to test their hypothesis that male eggs of the American alligator only hatch at high temperatures. They conducted an experiment and their results were organized in the data table above. They concluded very high temperatures killed unhatched alligators. What comment(s) would you make to Deja and Zhi regarding their conclusions?

a)

Their conclusion is supported by the data. Nothing should be added or deleted.

b)

They should reject their hypothesis. More males hatch at low temperatures, and more females hatch at high

temperatures.

c)

They should accept their hypothesis, and also note that more eggs fail to hatch at high temperatures.

d)

they did not sample very many eggs, and no pattern is apparent in the data.

2.

When designing an experiment, scientists will test a relationship between a “cause” and an “effect.” The “effect” is known as the .

a)

dependent variable

b)

constant

c)

independent variable

d)

control group

3.

Leah, LaRenda, and Gabi decide to test what factors influence water absorption by an egg. They remove the shell from 3 eggs by dissolving them in vinegar. They create three different water solutions. One is pure, 100% distilled water, a second is 50% water/50% corn syrup, and the third is 100% corn syrup. The mass of each egg is measured before they are put into a single solution for 24 hours. The mass of the eggs is then measured, and the data recorded below:

In this experiment, the independent variable they are testing is

a)

change in the mass of the eggs

b)

the ending mass of the eggs

c)

the amount of time they were in the solution

d)

the type of solution the egg is place in

4.

Leah, LaRenda, and Gabi decide to test what factors influence water absorption by an egg. They remove the shell from 3 eggs by dissolving them in vinegar. They create three different water solutions. One is pure, 100% distilled water, a second is 50% water/50% corn syrup, and the third is 100% corn syrup. The mass of each egg is measured before they are put into a single solution for 24 hours. The mass of the eggs is then measured, and the data recorded below:

This group also recorded a dependent variable, which is represented by

a)

change in the mass of the eggs

b)

the ending mass of the eggs

c)

the amount of time they were in the solution

d)

the type of solution the egg is place in

5.

Leah, LaRenda, and Gabi decide to test what factors influence water absorption by an egg. They remove the shell from 3 eggs by dissolving them in vinegar. They create three different water solutions. One is pure, 100% distilled water, a second is 50% water/50% corn syrup, and the third is 100% corn syrup. The mass of each egg is measured before they are put into a single solution for 24 hours. The mass of the eggs is then measured, and the data recorded below:

Based on the data this group gathered, the most appropriate hypothesis would be

a)

“If an egg is placed in corn syrup, then it will gain mass.”

b)

“If an egg is placed in vinegar overnight, then its shell will dissolve.”

c)

“If three eggs are each placed in three different solutions, then the egg in distilled water will lose mass.”

d)

“If an egg is placed in a pure water solution, then the egg will gain mass.”

6.

A golf club company has four models of golf clubs. Average strokes saved per 18 holes is a positive indicator of quality (the more strokes saved, the better the golf clubs). The manufacturing time per set is a measure of how long it takes to manufacture one set of clubs. If the company wishes to produce a lot of golf clubs quickly, which set would be the best choice to meet their criteria, based on the data table?

a)

Legacy

b)

Titleist

c)

Premium

d)

Taylor Made

7.

Look at the picture, what statement is inference.

a)

one prairie dog

b)

four starling birds

c)

prairie dogs are brown and starlings are brownish black

d)

the prairie dog is feeding the birds

8.

The breathing rate of goldfish with be positively affected by the addition of caffeine.

a)

independent variable

b)

dependent variable

c)

inference

d)

hypothesis

9.

Which of the following terms represents the smallest part of an element that still has the properties of that element?

a)

cell

b)

matter

c)

molecule

d)

atom

10.

A group of students conducted a science fair experiment to find out how the amount of fertilizer used will affect the growth of radish plants. The experiment was done using amounts of fertilizer that were less than and greater than the manufacturer’s recommendation. The table shows the average plant height in each test group after 10 days.

Which inference is supported by the data?

a)

Giving radish plants too little or too much fertilizer will not affect plant growth.

b)

Giving radish plants too little or too much fertilizer will slow down plant growth.

c)

Giving radish plants more fertilizer will increase plant growth

d)

Giving radish plants less fertilizer will increase plant growth.

11.

A student set up a small freshwater fish tank. The tank included water, fish, gravel, a snail, and plants, as represented below. Which statement BEST describes an activity performed by a student investigating an abiotic factor using this setup?

a)

He records the temperature of the water

b)

He feeds the fish 0.5 gram of fish food twice a day

c)

He measures the growth of the plants with a metric ruler

d)

He observes the snail scrape algae off the gravel

12.

Scientific theories can be tested.

a)

True

b)

False

13.

What is the first step in completing the scientific method?

a)

Form a hypothesis

b)

Design a controlled experiment

c)

Make observations and ask questions

d)

Draw conclusions

14.

When is a hypothesis created?

a)

Before making observations and asking questions

b)

After the experiment is performed

c)

Before the experiment is performed

d)

After results are communicated

15.

What are the two kinds of variables that you need to identify in your experiments?

a)

Independent and dependent

b)

Independent and manipulated

c)

Dependent and responding

d)

We don't need to identify variables

16.

What is the independent variable?

a)

The variable that is not changed

b)

The variable that is being observed

c)

The variable that you purposely manipulate

d)

The variable that responds to the change

17.

What is the dependent variable?

a)

The variable that does not change

b)

The variable that you purposely manipulate

c)

The variable that is kept constant on purpose

d)

The variable that responds to the change

18.

This statement would be which part of the scientific method: "There is so much snow outside!"

a)

Inference

b)

Question

c)

Observation

d)

Hypothesis

19.

What is the control group?

a)

The group that changes

b)

The group that is used as a comparison

c)

The group that responds to the changes

d)

The group that wants everything their own way

20.

This statement would be which part of he SM: "People are using umbrellas, it must be raining."

a)

Inference

b)

Question

c)

Obervation

d)

Hypothesis

21.

Quantitative or Qualitative? Number of eggs in a carton.

a)

Quantitative

b)

Qualitative

22.

Quantitative or Qualitative? Smoothness of the eggs in a carton.

a)

Quantitative

b)

Qualitative

23.

True or False? A scientific theory is "just a theory" and doesn't need to be taken seriously.

a)

True

b)

False

24.

A scientist performs an experiment to see if acids have an effect on the health of a particular type of plant. Three sets of plants were treated with acidic solutions of known pH while the control set was treated with a solution of neutral pH 7.Which is the best conclusion for this experiment?

a)

Acid has no effect on the health of this type of plant.

b)

B. High acidity is helpful to this type of plant.

c)

C. Low acidity is harmful to this type of plant.

d)

High acidity is harmful to this type of plant.

25.

The graph below shows atmospheric carbon dioxide levels since the year 1880.Which of the following conclusions can be drawn from this graph

a)

Atmospheric carbon dioxide levels are responsible for global temperature change.

b)

Atmospheric carbon dioxide levels have been rising at about the same rate for the past century.

c)

Atmospheric carbon dioxide levels have remained the same over the past century.

d)

Atmospheric carbon dioxide levels have been rising at an increasingly higher rate as the past century has progressed.

26.

A research group has discovered that damselflies, a type of dragonfly, are being infected by a particular type of aquatic protozoan. Both young and adult damselflies are not directly infected by the protozoan but contract the infection from the prey they eat. The graph shows the percentage of adult damselflies infected by protozoans during the summer and early fal

a)

Infection in embanked ponds increased during the sampling period.

b)

Protozoans were more common in creek-fed ponds than embanked ponds.

c)

Protozoans reproduce more quickly in embanked ponds than creek-fed ponds.

d)

Infection in creed-fed ponds remained constant throughout the sampling period.

27.

An osmosis investigation was conducted using chicken eggs to represent cells with semipermeable membranes. The mass of each egg was measured to determine how much water diffused into or out of the eggs. The eggs were first soaked in vinegar to dissolve the shell. Each egg was then placed in one of three different solutions for 24 hours. The table below shows the results of the investigation. Based on this experiment, which of the following should be inferred about cells with semipermeable membranes?

a)

Substances other than water may also cross the cell membrane.

b)

Substances other than water may block pores in the cell membrane.

c)

Water enters the cell when placed in environments of high water concentration.

d)

Water leaves the cell when placed in environments with a low concentration of solutes

28.

In order to be accepted, a scientific theory must be

a)

widely tested and supported by extensive data

b)

based on the results of a single experiment

c)

controversial and cause debate

d)

in line with all previous historical ideas

29.

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

a)

a single variable

b)

multiple variables

c)

the hypothesis

d)

scientific observations

30.

Which statement best expresses a basic scientific assumption?

a)

Interpretation of experimental results has provided explanations for all natural phenomena.

b)

If a conclusion is valid, similar investigations by other scientists should result in the same conclusion.

c)

For any conclusion to be valid, the design of the experiment requires that only two groups be compared.

d)

After a scientist formulates a conclusion based on an experiment, no further investigation is necessary.

31.

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

a)

type of soda given to each group

b)

amount of soda given to each group

c)

pulse rate of each group

d)

age of participants in each group

32.

What is the first step in completing the scientific method?

a)

Form a hypothesis

b)

Design a controlled experiment

c)

Make observations and ask questions

d)

Draw conclusions

33.

Scientist and other people start with questions and observations that may come from:

a)

Curiosity, skepticism, open-mindedness, and creativity

b)

Practical problems (flooding issue in a coastal area)

c)

New technology (3-D printers)

d)

All of the above

34.

Scientists are skeptics by: A. Questioning existing ideas and hypotheses B. Refusing to accept explanations without evidence C. Having a questioning and doubtful attitude.

a)

A only

b)

B only

c)

C and A

d)

A, B, and C

35.

Why is peer review important?

a)

Scientists need to stay busy to do their best work.

b)

Publishing peer-reviewed articles in scientific journals allows researchers to share ideas and to test and evaluate each other’s work.

c)

Scientists do not do peer review.

d)

They want to make sure that only they are right.

36.

What are the goals of science?

a)

Tell society what to feel and think

b)

Provide natural explanations for events in the natural world

c)

Explain religion and philosophy

37.

A student wanted to know if chlorine would stop algae from growing in water. The test tubes below were left at room temperature for a week to see if algae would grow. Which of the test tubes is the control?

a)

A

b)

B

c)

C

d)

D

38.

Which is not a pseudoscience?

a)

healing magnets

b)

astrology

c)

chemistry

d)

religion

39.

In an experiment, the variable that is manipulated is called the…

a)

Independant variable

b)

Confounding variable

c)

Dependent variable

d)

Independent variable

40.

A student wanted to know if chlorine would stop algae from growing in water. The test tubes below were left at room temperature for a week to see if algae would grow. Which of the following is the dependent variable?

a)

Algae growth

b)

Chlorine

c)

Water

d)

Test Tubes

Biology Intro Unit 1 Test Review

Total questions: 40

Worksheet time: 52mins

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