Unit 1 Practice Test

Frage 1 von 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

Wähle eine der folgenden:

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

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Frage 2 von 42

1

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

Wähle eine der folgenden:

controlled variable
dependent variable
independent variable
inferred variable

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Frage 3 von 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 __________.

Wähle eine der folgenden:

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

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Frage 4 von 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 ________.

Wähle eine der folgenden:

Controlled variable
Experimental plot
Replicate plot
Control plot
Dependent variable

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Frage 5 von 42

1

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

Wähle eine der folgenden:

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

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Frage 6 von 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

Wähle eine der folgenden:

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

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Frage 7 von 42

1

In experimental procedures, repetition of the procedures ___________.

Wähle eine der folgenden:

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

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Frage 8 von 42

1

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

Wähle eine der folgenden:

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.

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Frage 9 von 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

Wähle eine der folgenden:

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

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Frage 10 von 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

Wähle eine der folgenden:

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

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Frage 11 von 42

1

Which statement best describes a hypothesis?

Wähle eine der folgenden:

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

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Frage 12 von 42

1

Fülle die Lücke, um den Text zu vervollständigen

A is a protein coat that surrounds a virus.

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Frage 13 von 42

1

Fülle die Lücke, um den Text zu vervollständigen

A virus must infect a cell before it can replicate.

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Frage 14 von 42

1

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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.

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Frage 15 von 42

1

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

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Frage 16 von 42

1

Klicke auf den orangenen Punkt und schreibe die korrekte Antwort.

Label the X-axis.

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Frage 17 von 42

1

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

Wähle eine der folgenden:

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

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Frage 18 von 42

1

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

Wähle eine der folgenden:

Organelle
Organism
Tissue
Cell

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Frage 19 von 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

Wähle eine der folgenden:

metabolism
asexual reproduction
an adaptation
homeostasis

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Frage 20 von 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.

Klicke und ziehe, um den Text zu vervollständigen.

retrovirus

Antibiotics

vaccinations

reverse transcriptase

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Frage 21 von 42

1

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

Klicke und ziehe, um den Text zu vervollständigen.

Homeostasis

set point

Feedback Mechanisms

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Frage 22 von 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?

Wähle eine der folgenden:

Owner gets up
The bell
The dog
Dog rings the bells

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Frage 23 von 42

1

Complete the diagram below.

Ziehe eine Antwort zum richtigen orangen Punkt.

Dilation of skin blood vessels & Sweat

Body temperature decreases

Set Point: 37.1*C

Body temperature increases

Blood vessels constrict & muscles shiver

Negative

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Frage 24 von 42

1

Fülle die Lücken, um den Text zu vervollständigen.

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

Mean:
Median:
Mode:
Range:

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Frage 25 von 42

1

Wähle von der Dropdown-Liste, um den Text zu vervollständigen.

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.

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Frage 26 von 42

1

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

Wähle eine der folgenden:

hypothesis
theory
law

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Frage 27 von 42

1

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

Wähle eine der folgenden:

hypothesis
theory
law

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Frage 28 von 42

1

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

Wähle eine der folgenden:

constants
controls
variables

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Frage 29 von 42

1

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

Wähle eins der folgenden:

WAHR
FALSCH

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Frage 30 von 42

1

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

Wähle eine der folgenden:

constants
controls
variables

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Frage 31 von 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?

Wähle eine der folgenden:

soda
energy drink
coffee
lemonaid

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Frage 32 von 42

1

What type of virus infects bacteria cells?

Wähle eine der folgenden:

rhinovirus
bacteriophage
retrovirus
adenovirus

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Frage 33 von 42

1

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

Wähle eine der folgenden:

DNA
RNA

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Frage 34 von 42

1

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

Wähle eine der folgenden:

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

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Frage 35 von 42

1

Viruses are specific to the types of cells they infect.

Wähle eins der folgenden:

WAHR
FALSCH

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Frage 36 von 42

1

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

Wähle eine der folgenden:

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

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Frage 37 von 42

1

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

Wähle eine der folgenden:

response
adaptation
growth
development

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Frage 38 von 42

1

Fülle die Lücken, um den Text zu vervollständigen.

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

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Frage 39 von 42

1

Fülle die Lücken, um den Text zu vervollständigen.

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

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Frage 40 von 42

1

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

Wähle eine der folgenden:

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

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Frage 41 von 42

1

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

Wähle eine der folgenden:

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

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Frage 42 von 42

1

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

Wähle eine der folgenden:

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

	Erstellt von Jessica Dewald vor etwa 6 Jahre

9th grade Biology Quiz am Unit 1 Practice Test, erstellt von Jessica Dewald am 05/07/2018.

Unit 1 Practice Test

Frage 1 von 42

Wähle eine der folgenden:

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Frage 2 von 42

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

Wähle eine der folgenden:

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Frage 3 von 42

Wähle eine der folgenden:

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Frage 4 von 42

Wähle eine der folgenden:

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Frage 5 von 42

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

Wähle eine der folgenden:

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Frage 6 von 42

Wähle eine der folgenden:

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Frage 7 von 42

In experimental procedures, repetition of the procedures ___________.

Wähle eine der folgenden:

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Frage 8 von 42

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

Wähle eine der folgenden:

Erklärung

Frage 9 von 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

Wähle eine der folgenden:

Erklärung

Frage 10 von 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

Wähle eine der folgenden:

Erklärung

Frage 11 von 42

Which statement best describes a hypothesis?

Wähle eine der folgenden:

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Frage 12 von 42

Fülle die Lücke, um den Text zu vervollständigen

A is a protein coat that surrounds a virus.

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Frage 13 von 42

Fülle die Lücke, um den Text zu vervollständigen

A virus must infect a cell before it can replicate.

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Frage 14 von 42

Fülle die Lücke, um den Text zu vervollständigen

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.

Erklärung

Frage 15 von 42

Fülle die Lücke, um den Text zu vervollständigen

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

Erklärung

Frage 16 von 42

Klicke auf den orangenen Punkt und schreibe die korrekte Antwort.

Label the X-axis.

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Frage 17 von 42

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

Wähle eine der folgenden:

Erklärung

Frage 18 von 42

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

Wähle eine der folgenden:

Erklärung

Frage 19 von 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

Wähle eine der folgenden:

Erklärung

Frage 20 von 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.

Klicke und ziehe, um den Text zu vervollständigen.

Erklärung

Frage 21 von 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.