General Biology Exam Prep Guide Covering
Chapters 1, 2 & 3 Review Questions and Correct
Answers / BIO 181 Exam Prep Test Bank Latest
2026 (Chapter 1-3 Correctly Answered Questions)
Contents
Bio 181 Chapter 1 (200 Questions) ............................................................................................................ 1
Bio 181 Chapter 2 (240 Questions) .......................................................................................................... 25
Bio 181 Chapter 3 (200 Questions) .......................................................................................................... 54
Bio 181 Chapter 1 (200 Questions)
Microscopic structures within cells that are specialized to carry out specific
functions are called which of the following? - ANSWER-Organelles
Proteins are polymers composed of - ANSWER-Amino Acids
When biuret reagent is added to a solution containing protein, the solution turns
pink or purple. In the absence of protein, the solution is blue. Biuret reagent was
added to solutions that may or may not contain protein. The data can be seen in the
table below. What conclusion can be drawn from this data?
Tube Result A Blue B Blue C Blue D Purple - ANSWER-Tube D contains
protein, while tubes A, B, and C do not.
When biuret reagent is added to a solution containing protein, the solution turns
pink or purple. In the absence of protein, the solution is blue. Biuret reagent was
added to solutions that may or may not contain protein. The data can be seen in the
table below. What is the dependent variable in this experiment?
Tube Result A Blue B Blue C Blue D Purple - ANSWER-the color change from
blue to purple
pg. 1
,An unknown liquid sample is tested for chemical composition. You receive the
following results: iodine test = yellow; biuret test = blue; Benedict's test = blue;
and paper lipid test = clear. Which of the following are present in this sample?
(Select all that apply) - ANSWER-None of these are present.
An unknown sample is tested for chemical composition. You receive the following
results: iodine test = purple; biuret test = blue; Benedict's test = green; and paper
lipid test = greasy spot. Which of the following are present in this sample? (Select
all that apply) - ANSWER-Starch, Sugar, and Lipids
Which reagent is used to detect the presence of protein? - ANSWER-Biuret
During the paper test, solution 2 left a faint stain behind and was determined to be
milk while solution 4 left a very definite and greasy stain behind and was
determined to be oil. What can be concluded about the lipid content of milk? -
ANSWER-It contains a lower concentration of lipids than oil.
An assemblage of populations of different species that live together in one place is
called a biological_________________. - ANSWER-Community
A biological community and the physical environment within which it lives
together constitute which of the following? - ANSWER-Ecosystem
As complex structures are assembled from simpler subunits, which of the
following may develop? - ANSWER-Emergent Properties
Place the following levels of organization living things in the correct order, starting
with the least inclusive at the top. - ANSWER-Organism, Population, Species,
Community, Ecosystem, Biosphere
pg. 2
,Which of the following are examples of the organ system level of biological
organization (choose all that apply)? - ANSWER-
A group of organisms of the same species living in the same place is which of the
following? - ANSWER-Population
As we look at more and more complex biological systems, we can see that they
have novel properties, which result from the way in which their components
interact. These novel properties cannot be easily deduced from the nature of the
components themselves, and are called which of the following? - ANSWER-
Emergent properties
Which of the following would be an example of descriptive biology? - ANSWER-
Sequencing the human genome
Which of the following is not a typical stage of the scientific method? -
ANSWER-Make Subjective Conclusions
Scientific investigations should begin with which of the following? - ANSWER-
One or more observations
True or false: In many cases, biology can be descriptive, i.e. scientists are
attempting to describe something as completely as possible. - ANSWER-True
Arrange the following steps of the scientific method in the correct order (start at
the top). - ANSWER-1. Observations of the natural world are made.
2. A hypothesis is made
3. Experiments are conducted
4. Hypothesis are supported or rejected
pg. 3
, Experiments are designed to test which of the following? - ANSWER-Predictions
A hypothesis cannot be which of the following? - ANSWER-Proven
Which of the following statements about hypotheses are TRUE (choose all that
apply)? - ANSWER-1. An accepted hypothesis may eventually be rejected as new
data become available.
2. An accepted hypothesis is a tentative idea, meaning it may or may not be true.
3. When scientists accept a hypothesis, that means all the available evidence
supports it.
You place 15 human cheek cells under the light microscope and visualize each has
a nucleus. You then place 25 onion cells under the light microscope and observe a
nucleus inside of each one. These statements are examples of which of the
following? - ANSWER-Observations
The emerging field of ______ biology focuses on studying living organisms as a
whole as well as understanding the workings of the parts of an organism. -
ANSWER-Systems Biology
True or false: A hypothesis can be proven correct if it is tested enough times. -
ANSWER-False
Of the following statements about hypotheses, which are TRUE (choose all that
apply)? - ANSWER-1. A hypothesis can be disproved, but it cannot be proved
correct.
2. An accepted hypothesis may be false.
pg. 4
Chapters 1, 2 & 3 Review Questions and Correct
Answers / BIO 181 Exam Prep Test Bank Latest
2026 (Chapter 1-3 Correctly Answered Questions)
Contents
Bio 181 Chapter 1 (200 Questions) ............................................................................................................ 1
Bio 181 Chapter 2 (240 Questions) .......................................................................................................... 25
Bio 181 Chapter 3 (200 Questions) .......................................................................................................... 54
Bio 181 Chapter 1 (200 Questions)
Microscopic structures within cells that are specialized to carry out specific
functions are called which of the following? - ANSWER-Organelles
Proteins are polymers composed of - ANSWER-Amino Acids
When biuret reagent is added to a solution containing protein, the solution turns
pink or purple. In the absence of protein, the solution is blue. Biuret reagent was
added to solutions that may or may not contain protein. The data can be seen in the
table below. What conclusion can be drawn from this data?
Tube Result A Blue B Blue C Blue D Purple - ANSWER-Tube D contains
protein, while tubes A, B, and C do not.
When biuret reagent is added to a solution containing protein, the solution turns
pink or purple. In the absence of protein, the solution is blue. Biuret reagent was
added to solutions that may or may not contain protein. The data can be seen in the
table below. What is the dependent variable in this experiment?
Tube Result A Blue B Blue C Blue D Purple - ANSWER-the color change from
blue to purple
pg. 1
,An unknown liquid sample is tested for chemical composition. You receive the
following results: iodine test = yellow; biuret test = blue; Benedict's test = blue;
and paper lipid test = clear. Which of the following are present in this sample?
(Select all that apply) - ANSWER-None of these are present.
An unknown sample is tested for chemical composition. You receive the following
results: iodine test = purple; biuret test = blue; Benedict's test = green; and paper
lipid test = greasy spot. Which of the following are present in this sample? (Select
all that apply) - ANSWER-Starch, Sugar, and Lipids
Which reagent is used to detect the presence of protein? - ANSWER-Biuret
During the paper test, solution 2 left a faint stain behind and was determined to be
milk while solution 4 left a very definite and greasy stain behind and was
determined to be oil. What can be concluded about the lipid content of milk? -
ANSWER-It contains a lower concentration of lipids than oil.
An assemblage of populations of different species that live together in one place is
called a biological_________________. - ANSWER-Community
A biological community and the physical environment within which it lives
together constitute which of the following? - ANSWER-Ecosystem
As complex structures are assembled from simpler subunits, which of the
following may develop? - ANSWER-Emergent Properties
Place the following levels of organization living things in the correct order, starting
with the least inclusive at the top. - ANSWER-Organism, Population, Species,
Community, Ecosystem, Biosphere
pg. 2
,Which of the following are examples of the organ system level of biological
organization (choose all that apply)? - ANSWER-
A group of organisms of the same species living in the same place is which of the
following? - ANSWER-Population
As we look at more and more complex biological systems, we can see that they
have novel properties, which result from the way in which their components
interact. These novel properties cannot be easily deduced from the nature of the
components themselves, and are called which of the following? - ANSWER-
Emergent properties
Which of the following would be an example of descriptive biology? - ANSWER-
Sequencing the human genome
Which of the following is not a typical stage of the scientific method? -
ANSWER-Make Subjective Conclusions
Scientific investigations should begin with which of the following? - ANSWER-
One or more observations
True or false: In many cases, biology can be descriptive, i.e. scientists are
attempting to describe something as completely as possible. - ANSWER-True
Arrange the following steps of the scientific method in the correct order (start at
the top). - ANSWER-1. Observations of the natural world are made.
2. A hypothesis is made
3. Experiments are conducted
4. Hypothesis are supported or rejected
pg. 3
, Experiments are designed to test which of the following? - ANSWER-Predictions
A hypothesis cannot be which of the following? - ANSWER-Proven
Which of the following statements about hypotheses are TRUE (choose all that
apply)? - ANSWER-1. An accepted hypothesis may eventually be rejected as new
data become available.
2. An accepted hypothesis is a tentative idea, meaning it may or may not be true.
3. When scientists accept a hypothesis, that means all the available evidence
supports it.
You place 15 human cheek cells under the light microscope and visualize each has
a nucleus. You then place 25 onion cells under the light microscope and observe a
nucleus inside of each one. These statements are examples of which of the
following? - ANSWER-Observations
The emerging field of ______ biology focuses on studying living organisms as a
whole as well as understanding the workings of the parts of an organism. -
ANSWER-Systems Biology
True or false: A hypothesis can be proven correct if it is tested enough times. -
ANSWER-False
Of the following statements about hypotheses, which are TRUE (choose all that
apply)? - ANSWER-1. A hypothesis can be disproved, but it cannot be proved
correct.
2. An accepted hypothesis may be false.
pg. 4
