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BIO 150 EXAM 1 - UTK MAMANTOV
2026 QUESTIONS AND ANSWERS | A+
GRADED | WITH EXPERT SOLUTIONS
Describe the nature of science - correct answer-Scientific ideas
change over time as new info is discovered.
Differentiate between questions that can be answered through the
scientific process and those that cannot - correct answer-
Questions can be answered when they can be observed or
measured by collecting data. Questions cannot be answered if
they cannot be observed or measured.
Define a theory in the scientific sense - correct answer-
Explanations for observed phenomena that is supported by a
wide body of evidence.
Compare and contrast scientific theories and hypotheses - correct
answer-A hypothesis is made before any research has been
conducted, while a theory is a principle formed based on the
research done and shown in data.
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Identify and explain the steps in the scientific method. - correct
answer-First step is observation. This is essentially where you
observe a certain thing occurring.
The next step is doing research about the topic you observed in
order to gain an understanding of what is already known about
the question.
Then you will form a hypothesis based on the limited evidence
you have to make a starting point for further investigation. The
hypothesis should be precise and testable using data.
The next step would be to conduct an experiment to test the
hypothesis in order to collect data.
Then with that data, you must analyze it and see what the results
mean.
The final step would be to report conclusions based on the results
and then the process would start all over again.
Describe the purpose of a null hypothesis - correct answer-The
purpose of the null hypothesis is to see if the test is supported or
not (null hypothesis states that there will be no difference, effect,
or relationship between the variables).
How is the scientific method different from the scientific process?
- correct answer-There is no order for the scientific process as
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scientists tend to go back and forth while in the scientific method it
is a step by step method scientists need to follow.
Explain why data supports or rejects hypotheses, not "proves"
them - correct answer-Data supports or rejects a hypothesis
because you can never really prove a hypothesis correct, you can
only run tests to support the hypothesis. There can always be
some scenario in which a hypothesis is incorrect.
Describe a control group - correct answer-It is the group that is
left unchanged in an experiment. It is important because they
provide baseline measurements.
what kind of variables are of the x-axis? - correct answer-
independent variables
what kind of variables are of the y-axis? - correct answer-
dependent variables
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What is DNA? - correct answer-Deoxyribonucleic acid (DNA)
stores genetic information. DNA is a type of nucleic acid. It is a
polymer made up of monomers called nucleotides.
Describe the structure of DNA - correct answer-DNA is a double
helix in which the backbone is made of alternating sugar
(deoxyribose) and phosphate groups. Attached to each sugar is
one of four bases: adenine (A), cytosine (C), guanine (G) or
thymine (T). The two strands are connected by hydrogen bonds
between
these bases. The sequence of the bases along DNA's backbone
encodes biological information, such as the instructions for
making a protein or RNA molecule.
What is the primary structure of DNA? - correct answer-The
primary structure of DNA is a directional sugar-phosphate
backbone.
What is the secondary structure of DNA? - correct answer-The
secondary structure of DNA is an antiparallel double helix.
Explain the key results of the Hershey-Chase experiment - correct
answer-They wanted to figure out whether genes were made of
BIO 150 EXAM 1 - UTK MAMANTOV
2026 QUESTIONS AND ANSWERS | A+
GRADED | WITH EXPERT SOLUTIONS
Describe the nature of science - correct answer-Scientific ideas
change over time as new info is discovered.
Differentiate between questions that can be answered through the
scientific process and those that cannot - correct answer-
Questions can be answered when they can be observed or
measured by collecting data. Questions cannot be answered if
they cannot be observed or measured.
Define a theory in the scientific sense - correct answer-
Explanations for observed phenomena that is supported by a
wide body of evidence.
Compare and contrast scientific theories and hypotheses - correct
answer-A hypothesis is made before any research has been
conducted, while a theory is a principle formed based on the
research done and shown in data.
, Page | 2
Identify and explain the steps in the scientific method. - correct
answer-First step is observation. This is essentially where you
observe a certain thing occurring.
The next step is doing research about the topic you observed in
order to gain an understanding of what is already known about
the question.
Then you will form a hypothesis based on the limited evidence
you have to make a starting point for further investigation. The
hypothesis should be precise and testable using data.
The next step would be to conduct an experiment to test the
hypothesis in order to collect data.
Then with that data, you must analyze it and see what the results
mean.
The final step would be to report conclusions based on the results
and then the process would start all over again.
Describe the purpose of a null hypothesis - correct answer-The
purpose of the null hypothesis is to see if the test is supported or
not (null hypothesis states that there will be no difference, effect,
or relationship between the variables).
How is the scientific method different from the scientific process?
- correct answer-There is no order for the scientific process as
, Page | 3
scientists tend to go back and forth while in the scientific method it
is a step by step method scientists need to follow.
Explain why data supports or rejects hypotheses, not "proves"
them - correct answer-Data supports or rejects a hypothesis
because you can never really prove a hypothesis correct, you can
only run tests to support the hypothesis. There can always be
some scenario in which a hypothesis is incorrect.
Describe a control group - correct answer-It is the group that is
left unchanged in an experiment. It is important because they
provide baseline measurements.
what kind of variables are of the x-axis? - correct answer-
independent variables
what kind of variables are of the y-axis? - correct answer-
dependent variables
, Page | 4
What is DNA? - correct answer-Deoxyribonucleic acid (DNA)
stores genetic information. DNA is a type of nucleic acid. It is a
polymer made up of monomers called nucleotides.
Describe the structure of DNA - correct answer-DNA is a double
helix in which the backbone is made of alternating sugar
(deoxyribose) and phosphate groups. Attached to each sugar is
one of four bases: adenine (A), cytosine (C), guanine (G) or
thymine (T). The two strands are connected by hydrogen bonds
between
these bases. The sequence of the bases along DNA's backbone
encodes biological information, such as the instructions for
making a protein or RNA molecule.
What is the primary structure of DNA? - correct answer-The
primary structure of DNA is a directional sugar-phosphate
backbone.
What is the secondary structure of DNA? - correct answer-The
secondary structure of DNA is an antiparallel double helix.
Explain the key results of the Hershey-Chase experiment - correct
answer-They wanted to figure out whether genes were made of
