Unit 1 Practice Test

Question 1 of 42

1

A company that manufactures a popular multivitamin wanted to determine whether their multivitamin had any side effects. For the initial study, the company chose 2000 individuals to take their multivitamin tablets per day for one year. Scientists from the company surveyed the participants to determine whether they had experienced any side effects. The greatest problem with this procedure is that

Select one of the following:

No control group was used
Only one brand of vitamin was tested
The sample size was not large enough
The study lasted only one year

Explanation

Question 2 of 42

1

In an experiment, the variable that is deliberately changed is the

Select one of the following:

controlled variable
dependent variable
independent variable
inferred variable

Explanation

Question 3 of 42

1

Radon is a radioactive gas that seeps into homes from the soil. It is thought to be a cause of lung cancer. A research team investigates this theory. They gather large amounts of data on basement radon concentrations and lung cancer rates. They concluded that the more radon there is in a home, the more likely that people living in those homes will develop lung cancer. After the study was published, other researchers criticized it by asserting that the studied neighborhoods with higher radon concentrations also have a higher percentage of older people and a higher percentage of cigarette smokers than the low-radon neighborhoods. Both advanced age and cigarette smoking increase the risk of lung cancer. This criticism, if correct, shows that the radon study suffered from __________.

Select one of the following:

Nonsystematic observation and analysis of data
A small sample size
A lack of replication
Uncontrolled variables
An unfalsifiable hypothesis

Explanation

Question 4 of 42

1

Two garden plots were planted with corn. The soil was similar in each, and equal amounts of water were applied to each plot. One plot was fertilized, and the other was not. The experimenters measured the yield of bushels of corn from each plot. The plot that did not receive the fertilizer was the ________.

Select one of the following:

Controlled variable
Experimental plot
Replicate plot
Control plot
Dependent variable

Explanation

Question 5 of 42

1

The best method for determining whether bean plants require sodium is to ________.

Select one of the following:

grow bean plants with and without sodium
look for sodium in leaf tissues using autoradiography
analyze root content for sodium
measure how fast radioactive sodium enters the plant
measure the amount of sodium in a few bean plants

Explanation

Question 6 of 42

1

A company was testing a new drug it thought would help decrease the risk of transmission of viruses from mother to fetus. In an experiment to test the compound, an investigator gave 400 pregnant female rats a small dose of experimental drug and inoculated each with a type of virus known to cause disease in rats. At the same time, 400 other pregnant rats were given only the virus. Of the rat pups born to females that received both the virus and the drug, 203 showed no symptoms of the disease; 205 rat pups born to the virus-only females showed symptoms. From this data, we can best conclude

Select one of the following:

That the drug is 5%effective and testing on humans should begin.
That the drug seems to have little effect on viral transmission at the dosage given
Nothing, because no independent variable could be identified
That the drug enhances disease progression
Nothing, because no control group was used in the test of the drug

Explanation

Question 7 of 42

1

In experimental procedures, repetition of the procedures ___________.

Select one of the following:

is necessary before concluding that a given set of results is correct
is not necessary if the scientist obtains enough background information
is too difficult for researchers doing fieldwork
should always be done by changing a variable
wastes money that could be better spent doing new experiments

Explanation

Question 8 of 42

1

Should an experiment test only one variable at a time? Why or why not?

Select one of the following:

As long the experiment is repeated a sufficient number of times, it doesn't matter how many variables are used.
Yes, an experiment should only test one variable at a time. This ensures that the experimental outcome is clearly due to one identifiable factor.
Yes, and experiment should only test one variable at a time. That way, the experiment will only have to be performed once.
No, it is not necessary to test only one variable per experiment, especially when time is of the essence.

Explanation

Question 9 of 42

1

An experiment was designed to test whether students could squeeze a clothespin more times in one minute after resting or after exercise. The dependent variable for this experiment is

Select one of the following:

time the student was squeezing the clothespin
number of times the student was able to squeeze the clothes bin
strength of the student
length of the clothespin

Explanation

Question 10 of 42

1

An experiment was designed to test whether students could squeeze a clothespin more times in one minute after resting or after exercise. The experimental result can be made more valid by

Select one of the following:

increasing the time
using a plastic clothespin
using safety precautions
setting a specific type of exercise

Explanation

Question 11 of 42

1

Which statement best describes a hypothesis?

Select one of the following:

A process of making careful observations
The conclusion drawn from the results of an experiment is part of a hypothesis
A hypothesis serves as a basis for determining what data to collect when designing an experiment
The data collected from an experiment written in the form of a hypothesis

Explanation

Question 12 of 42

1

Fill the blank space to complete the text.

A is a protein coat that surrounds a virus.

Explanation

Question 13 of 42

1

Fill the blank space to complete the text.

A virus must infect a cell before it can replicate.

Explanation

Question 14 of 42

1

Fill the blank space to complete the text.

In the cycle the virus integrates its genetic information with that of the host and then becomes dormant, letting the host multiply and continue its normal activities.

Explanation

Question 15 of 42

1

Fill the blank space to complete the text.

In the cycle a virus infects a host cell, uses its metabolism to multiply, and then destroys the cell completely.

Explanation

Question 16 of 42

1

Click on the orange point and write the correct answer.

Label the X-axis.

Explanation

Question 17 of 42

1

All of the following are characteristics of living things except the ability to

Select one of the following:

grow and develop
reproduce asexually only
maintain a stable internal environment
change over time

Explanation

Question 18 of 42

1

Which of the following is a fundamental unit of structure and function in living organisms?

Select one of the following:

Organelle
Organism
Tissue
Cell

Explanation

Question 19 of 42

1

The ability to keep blood sugar levels within a fairly narrow range, despite the intake of meals high in carbohydrates, is an example of

Select one of the following:

metabolism
asexual reproduction
an adaptation
homeostasis

Explanation

Question 20 of 42

1

A ❌ is a group of RNA viruses that use ❌ to replicate. ❌ cannot be used to treat viral infections, but ❌ can be used to prevent them.

Drag and drop to complete the text.

retrovirus

Antibiotics

vaccinations

reverse transcriptase

Explanation

Question 21 of 42

1

❌ is the process of maintaining a stable internal environment. ❌ are used to regulate our internal environment around a ❌.

Drag and drop to complete the text.

Homeostasis

set point

Feedback Mechanisms

Explanation

Question 22 of 42

1

A dog rings a set of bells hanging on the door handle. The dog's owner gets up to let them outside. What is the Stimulus in this situation?

Select one of the following:

Owner gets up
The bell
The dog
Dog rings the bells

Explanation

Question 23 of 42

1

Complete the diagram below.

Drag an answer into the correct orange point.

Dilation of skin blood vessels & Sweat

Body temperature decreases

Set Point: 37.1*C

Body temperature increases

Blood vessels constrict & muscles shiver

Negative

Explanation

Question 24 of 42

1

Fill the blank spaces to complete the text.

Find the mean, median, mode, and range for the following set of data:
33, 23, 44, 23, 67, 55

Mean:
Median:
Mode:
Range:

Explanation

Question 25 of 42

1

Select from the dropdown lists to complete the text.

There are two types of data that can be collected when conducting an exerpiment. ( Qualitative, Quantitative ) which are obervations made using your senses and ( Quantitative, Qualitative ) in which instruments are used to collect numerical data.

Explanation

Question 26 of 42

1

This is supported by a large body of evidence; explains how and why nature works.

Select one of the following:

hypothesis
theory
law

Explanation

Question 27 of 42

1

Describes how nature works through the use of mathematical equations. Does not focus on the how or the why.

Select one of the following:

hypothesis
theory
law

Explanation

Question 28 of 42

1

In a scientific experiment, the factors that stay the same through out the experiment are called...

Select one of the following:

constants
controls
variables

Explanation

Question 29 of 42

1

The dependent variable is the variable that is being measured in an experiment.

Select one of the following:

True
False

Explanation

Question 30 of 42

1

In an experiment these are used to compare results to because we know they will not respond to the independent variable.

Select one of the following:

constants
controls
variables

Explanation

Question 31 of 42

1

You know caffiene can have an impact on a person's heart rate. If you were to conduct an experiment to determine the effect caffiene has on a person's heart rate which item below would you use as your control?

Select one of the following:

soda
energy drink
coffee
lemonaid

Explanation

Question 32 of 42

1

What type of virus infects bacteria cells?

Select one of the following:

rhinovirus
bacteriophage
retrovirus
adenovirus

Explanation

Question 33 of 42

1

Which type of genetic material is most commonly found in viruses?

Select one of the following:

DNA
RNA

Explanation

Question 34 of 42

1

During the lysogenic cycle, what happens to the viral genetic material?

Select one of the following:

it is absorbed and digested by lysosomes in the host cell
it is incorporated into the host cell's DNA
It is used to create thousands of new viruses
it is copied by the host cell and stored for later use

Explanation

Question 35 of 42

1

Viruses are specific to the types of cells they infect.

Select one of the following:

True
False

Explanation

Question 36 of 42

1

Which of the following it the correct order for increasing complexity?

Select one of the following:

cells--> tissues--> organs--> organ systems
tissues--> cells--> organ systems--> organs
organs--> organ systems--> tissues--> cells

Explanation

Question 37 of 42

1

The process of natural changes that take place during an organism's life is called ____.

Select one of the following:

response
adaptation
growth
development

Explanation

Question 38 of 42

1

Fill the blank spaces to complete the text.

Organisms that consist of one cell are said to be , while organisms composed of many cells are said to be .

Explanation

Question 39 of 42

1

Fill the blank spaces to complete the text.

reproduction consists one parent cell, while reproduction requires two parent cells. Sexual reproduction happens at a rate than asexual reproduction.

Explanation

Question 40 of 42

1

Which one of these is NOT one of the characteristics of living things?

Select one of the following:

all living things drink water
all living things are composed of one or more cells
all living things grow, develop, and have life spans
all living things reproduce

Explanation

Question 41 of 42

1

Living things require energy to survive. Which of the following is NOT an example of an organism requiring energy?

Select one of the following:

heterotrophs consume food
organisms contain DNA
decomposers break down dead material
autotrophs use sunlight to produce their own food

Explanation

Question 42 of 42

1

In order to maintain homeostasis, it is most important for an animal to be able to

Select one of the following:

change it habitat
hide from its predators
increase its prey population
respond to its environment

	Created by Jessica Dewald almost 6 years ago

9th grade Biology Quiz on Unit 1 Practice Test, created by Jessica Dewald on 05/07/2018.

Unit 1 Practice Test

Question 1 of 42

Select one of the following:

Explanation

Question 2 of 42

In an experiment, the variable that is deliberately changed is the

Select one of the following:

Explanation

Question 3 of 42

Select one of the following:

Explanation

Question 4 of 42

Select one of the following:

Explanation

Question 5 of 42

The best method for determining whether bean plants require sodium is to ________.

Select one of the following:

Explanation

Question 6 of 42

Select one of the following:

Explanation

Question 7 of 42

In experimental procedures, repetition of the procedures ___________.

Select one of the following:

Explanation

Question 8 of 42

Should an experiment test only one variable at a time? Why or why not?

Select one of the following:

Explanation

Question 9 of 42

An experiment was designed to test whether students could squeeze a clothespin more times in one minute after resting or after exercise. The dependent variable for this experiment is

Select one of the following:

Explanation

Question 10 of 42

An experiment was designed to test whether students could squeeze a clothespin more times in one minute after resting or after exercise. The experimental result can be made more valid by

Select one of the following:

Explanation

Question 11 of 42

Which statement best describes a hypothesis?

Select one of the following:

Explanation

Question 12 of 42

Fill the blank space to complete the text.

A is a protein coat that surrounds a virus.

Explanation

Question 13 of 42

Fill the blank space to complete the text.

A virus must infect a cell before it can replicate.

Explanation

Question 14 of 42

Fill the blank space to complete the text.

In the cycle the virus integrates its genetic information with that of the host and then becomes dormant, letting the host multiply and continue its normal activities.

Explanation

Question 15 of 42

Fill the blank space to complete the text.

In the cycle a virus infects a host cell, uses its metabolism to multiply, and then destroys the cell completely.

Explanation

Question 16 of 42

Click on the orange point and write the correct answer.

Label the X-axis.

Explanation

Question 17 of 42

All of the following are characteristics of living things except the ability to

Select one of the following:

Explanation

Question 18 of 42

Which of the following is a fundamental unit of structure and function in living organisms?

Select one of the following:

Explanation

Question 19 of 42

The ability to keep blood sugar levels within a fairly narrow range, despite the intake of meals high in carbohydrates, is an example of

Select one of the following:

Explanation

Question 20 of 42

A ❌ is a group of RNA viruses that use ❌ to replicate. ❌ cannot be used to treat viral infections, but ❌ can be used to prevent them.

Drag and drop to complete the text.

Explanation

Question 21 of 42

❌ is the process of maintaining a stable internal environment. ❌ are used to regulate our internal environment around a ❌.

Find the mean, median, mode, and range for the following set of data:
33, 23, 44, 23, 67, 55

Mean:
Median:
Mode:
Range:

There are two types of data that can be collected when conducting an exerpiment. ( Qualitative, Quantitative ) which are obervations made using your senses and ( Quantitative, Qualitative ) in which instruments are used to collect numerical data.