RIO SALADO BIO 201 EXAM 1 -HUMAN ANATOMY
AND PHYSIOLOGY I |ACTUAL QUESTIONS AND
VERIFIED ANSWERS|BRAND NEW 2026-2027
UPDATE|GRADED A+
Question 1
Living organisms share a number of characteristics. These unifying characteristics separate
them from nonliving things. Which of the following statements is NOT a unifying principle
of living organisms?
A.) All living organisms (populations) are capable of evolving.
B.) All living organisms grow by increasing cell size and/or cell number.
C.) All living organisms reproduce by passing genetic information to future generations.
D.) All living organisms are made up of one or more cells.
E.) All living organisms are dependent on a constant supply of oxygen for survival.
CORRECT ANSWER
E.) All living organisms are dependent on a constant supply of oxygen for survival.
Question 2
The formulation of a hypothesis is based on observations and refined by available
information from past observations or research. Place the following statements in the
appropriate sequence showing the correct progression through scientific inquiry.
I. Because the bread on the counter developed mold 6 days before the bread in the fridge,
your hypothesis is supported.
II. Bread placed in warmer temperatures should develop mold faster and more extensively
than bread placed in colder temperatures.
III. You put one slice of bread on the counter and another identical slice in the fridge. Both
are uncovered and exposed to air.
1
,IV. You suppose that temperature affects the growth of mold and that the difference in mold
growth related to the differences between the bread and the rolls.
V. You notice that bread you left on the counter has more mold on it than do the rolls that
you left in the refrigerator.
A.) V - II - IV - I
CORRECT ANSWER
D.) V - IV - II - III - I
Question 3
Which of the following is NEITHER a valid hypothesis NOR a theory?
A.) All living organisms contain DNA, which encodes the genes that determine what they
look like and how they interact with their environment.
B.) Bacteria secrete antibiotics in the presence of other bacteria in times of food stress.
C.) The thick shell of lobsters protects them from predation.
D.) The fact that humans possess a soul sets them apart from other living organisms.
E.) The diversity of organisms alive today is due to evolution via natural selection.
CORRECT ANSWER
D.) The fact that humans possess a soul sets them apart from other living organisms.
Question 4
Which level of organization is common to all life forms?
A.) tissue
B.) organelle
2
,C.) organ
D.) cell
E.) colony
CORRECT ANSWER
D.) cell
Question 5
A researcher decides to test the scientific validity of the common phrase "An apple a day
keeps the doctor away." What would be a valid hypothesis to investigate this specific
question?
A.) Eating apples decreases the frequency of contracting a cold.
B.) Eating one apple every day is good for you.
C.) The daily consumption of a single apple does not change the number of visits to the
doctor.
D.) Apples are high in vitamin C.
E.) Those who consume apples have longer lifespans than those who do not consume
apples.
CORRECT ANSWER
C.) The daily consumption of a single apple does not change the number of visits to the
doctor.
Question 6
A scientist isolates a single-celled organism from the bottom of a sulfur hot spring. When
examined under the microscope, she captures the following image. Based on this image, in
what domain of life is this organism?
A.) Either bacteria or archaea
3
, B.) Eukarya
C.) Archaea
D.) Bacteria
E.) It is impossible to determine anything based on this evidence alone
CORRECT ANSWER
B.) Eukarya
Question 7
A group of Boa constrictors on an island is an example of a(n)
A.) cell.
B.) congregation.
C.) population.
D.) ecosystem.
E.) pod.
CORRECT ANSWER
C.) population.
Question 8
Plant photosynthesis and the consumption of plants by animals are both examples of what
unifying principle of life?
A.) All living organisms metabolize.
B.) All living organisms have evolved over the course of many generations.
C.) All living organisms maintain some level of homeostasis.
D.) All living organisms are composed of similar structures.
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AND PHYSIOLOGY I |ACTUAL QUESTIONS AND
VERIFIED ANSWERS|BRAND NEW 2026-2027
UPDATE|GRADED A+
Question 1
Living organisms share a number of characteristics. These unifying characteristics separate
them from nonliving things. Which of the following statements is NOT a unifying principle
of living organisms?
A.) All living organisms (populations) are capable of evolving.
B.) All living organisms grow by increasing cell size and/or cell number.
C.) All living organisms reproduce by passing genetic information to future generations.
D.) All living organisms are made up of one or more cells.
E.) All living organisms are dependent on a constant supply of oxygen for survival.
CORRECT ANSWER
E.) All living organisms are dependent on a constant supply of oxygen for survival.
Question 2
The formulation of a hypothesis is based on observations and refined by available
information from past observations or research. Place the following statements in the
appropriate sequence showing the correct progression through scientific inquiry.
I. Because the bread on the counter developed mold 6 days before the bread in the fridge,
your hypothesis is supported.
II. Bread placed in warmer temperatures should develop mold faster and more extensively
than bread placed in colder temperatures.
III. You put one slice of bread on the counter and another identical slice in the fridge. Both
are uncovered and exposed to air.
1
,IV. You suppose that temperature affects the growth of mold and that the difference in mold
growth related to the differences between the bread and the rolls.
V. You notice that bread you left on the counter has more mold on it than do the rolls that
you left in the refrigerator.
A.) V - II - IV - I
CORRECT ANSWER
D.) V - IV - II - III - I
Question 3
Which of the following is NEITHER a valid hypothesis NOR a theory?
A.) All living organisms contain DNA, which encodes the genes that determine what they
look like and how they interact with their environment.
B.) Bacteria secrete antibiotics in the presence of other bacteria in times of food stress.
C.) The thick shell of lobsters protects them from predation.
D.) The fact that humans possess a soul sets them apart from other living organisms.
E.) The diversity of organisms alive today is due to evolution via natural selection.
CORRECT ANSWER
D.) The fact that humans possess a soul sets them apart from other living organisms.
Question 4
Which level of organization is common to all life forms?
A.) tissue
B.) organelle
2
,C.) organ
D.) cell
E.) colony
CORRECT ANSWER
D.) cell
Question 5
A researcher decides to test the scientific validity of the common phrase "An apple a day
keeps the doctor away." What would be a valid hypothesis to investigate this specific
question?
A.) Eating apples decreases the frequency of contracting a cold.
B.) Eating one apple every day is good for you.
C.) The daily consumption of a single apple does not change the number of visits to the
doctor.
D.) Apples are high in vitamin C.
E.) Those who consume apples have longer lifespans than those who do not consume
apples.
CORRECT ANSWER
C.) The daily consumption of a single apple does not change the number of visits to the
doctor.
Question 6
A scientist isolates a single-celled organism from the bottom of a sulfur hot spring. When
examined under the microscope, she captures the following image. Based on this image, in
what domain of life is this organism?
A.) Either bacteria or archaea
3
, B.) Eukarya
C.) Archaea
D.) Bacteria
E.) It is impossible to determine anything based on this evidence alone
CORRECT ANSWER
B.) Eukarya
Question 7
A group of Boa constrictors on an island is an example of a(n)
A.) cell.
B.) congregation.
C.) population.
D.) ecosystem.
E.) pod.
CORRECT ANSWER
C.) population.
Question 8
Plant photosynthesis and the consumption of plants by animals are both examples of what
unifying principle of life?
A.) All living organisms metabolize.
B.) All living organisms have evolved over the course of many generations.
C.) All living organisms maintain some level of homeostasis.
D.) All living organisms are composed of similar structures.
4
