BIO 201 CHAPTER 1 EXAM WITH
CORRECT ANSWERS 2025
Put the following levels of organization from the simpler to the
more complex level. correct answers >> 1. Chemical level
2. Cellular level
3. Tissue level
4. Organ level
5. Organ system level
6. Organism level
Which of the following statements regarding positive feedback is
not correct? correct answers >> If blood pressure decreases
and negative feedback is not able to maintain homeostasis,
positive feedback will cause blood pressure to increase.
Put the following events in the correct order to describe how
negative feedback controls blood pressure. correct answers
>> 1. Receptors in the wall of a blood vessel detect that blood
pressure has decreased.
2. Nerves send information about blood pressure to the control
center (the brain).
3. Nerves from the brain send signals to the effector (the heart) to
increase stroke rate and volume.
4. Blood pressure is restored to its normal levels.
, Place each statement in the proper category to distinguish
whether it is referring to positive or negative feedback. correct
answers >> Positive feedback
1. This feedback produces a rapid "climatic event".
3. This feedback is an increasing, amplifying, or magnifying
process.
4. Stretching the cervix indirectly causes the uterus to contract
with more force, causing greater stretch of the cervix.
5. Platelets in the blood adhere to a recent cut in the skin and
release chemicals, which causes additional platelets to adhere to
the wound.
Negative feedback
1. This feedback negates (make ineffective) or reverses a trend.
2. Decreasing blood pressure indirectly causes widespread
vasoconstriction, resulting in a rise in blood pressure.
3. Decreasing levels of blood calcium cause parathyroid hormone
to be released, resulting in the increase of blood calcium levels.
Longitudinal section correct answers >> through the long
axis of an organ
Transverse (cross) section correct answers >> right angle to
the long axis
Oblique section correct answers >> through the long axis at
other than a right angle
CORRECT ANSWERS 2025
Put the following levels of organization from the simpler to the
more complex level. correct answers >> 1. Chemical level
2. Cellular level
3. Tissue level
4. Organ level
5. Organ system level
6. Organism level
Which of the following statements regarding positive feedback is
not correct? correct answers >> If blood pressure decreases
and negative feedback is not able to maintain homeostasis,
positive feedback will cause blood pressure to increase.
Put the following events in the correct order to describe how
negative feedback controls blood pressure. correct answers
>> 1. Receptors in the wall of a blood vessel detect that blood
pressure has decreased.
2. Nerves send information about blood pressure to the control
center (the brain).
3. Nerves from the brain send signals to the effector (the heart) to
increase stroke rate and volume.
4. Blood pressure is restored to its normal levels.
, Place each statement in the proper category to distinguish
whether it is referring to positive or negative feedback. correct
answers >> Positive feedback
1. This feedback produces a rapid "climatic event".
3. This feedback is an increasing, amplifying, or magnifying
process.
4. Stretching the cervix indirectly causes the uterus to contract
with more force, causing greater stretch of the cervix.
5. Platelets in the blood adhere to a recent cut in the skin and
release chemicals, which causes additional platelets to adhere to
the wound.
Negative feedback
1. This feedback negates (make ineffective) or reverses a trend.
2. Decreasing blood pressure indirectly causes widespread
vasoconstriction, resulting in a rise in blood pressure.
3. Decreasing levels of blood calcium cause parathyroid hormone
to be released, resulting in the increase of blood calcium levels.
Longitudinal section correct answers >> through the long
axis of an organ
Transverse (cross) section correct answers >> right angle to
the long axis
Oblique section correct answers >> through the long axis at
other than a right angle
