1
BIO 121 Final Exam practice 2026
Questions and Answers (100% Correct
Answers) Already Graded A+
Which form of endoplasmic reticulum modifies and
packages newly synthesized proteins? Ans: rough
endoplasmic reticulum
© 2026 Assignment
Which of the following is (are) concerned with maintaining
calcium balance? Ans: all of the above
Guru01 - Stuvia
Chondrocytes are to cartilage as osteocytes are to Ans:
Expert
bone
The diaphragm separates the ____________ from the
____________. Ans: thoracic cavity; abdominopelvic cavity
Unlike cartilage, bone Ans: is highly vascular
The cardiovascular reflexes are based in the Ans: medulla
oblongata
The dominant fiber type in most dense connective tissue
is Ans: collagen
Which of the following bones is not part of the
appendicular skeleton? Ans: sacrum
You are given samples of adipose tissue and muscle tissue
that have equal volumes. After weighing the samples, you
find the sample of muscle tissue has a greater mass. Which
, 2
is true of their densities? Ans: muscle tissue has a greater
density
Intercalated discs and striations are characteristic of Ans:
cardiac muscle tissue
What level of organization is the smallest living level of
organization? Ans: cellular level
Preganglionic neurons of the sympathetic nervous system
© 2026 Assignment
are located in the Ans: lateral gray horns of segments T1
to L2 of the spinal cord.
Guru01 - Stuvia
Expert
As the ________ nerve approaches the knee, it divides into
two branches, the common fibular nerve and the tibial
nerve. Ans: sciatic
The quadriceps group includes all of the following, except
the Ans: biceps femoris
Synaptic vesicles containing neurotransmitters are
released via ________ when the action potential arrives.
Ans: exocytosis
An increased amount of sodium in the extracellular fluid
would lead to: Ans: increase in extracellular fluid volume
Which of the following is not part of the axial division of
the skeletal system? Ans: pectoral girdle
The tough horny superficial layer of the epidermis is
known as the Ans: stratum corneum
, 3
Cells that store fat are called Ans: adipocytes
The Roman numeral VIII indicates the ________ nerve. Ans:
vestibulocochlear
The hormone calcitonin functions to Ans: decrease the
level of calcium ion in the blood
Ions with a + charge are called Ans: cations
© 2026 Assignment
The dorsal root of a spinal nerve contains Ans: axons of
sensory neurons
Guru01 - Stuvia
Expert
Chromosomes consist of Ans: DNA and proteins
If a red blood cell is placed in an isotonic solution, the red
blood cell will: Ans: remain unchanged
Substrate molecules bind to enzymes at the ________ sites.
Ans: active
The plasma membrane is composed of Ans: a bilayer of
phospholipids
Action potentials are electrical signals conducted by which
part of the neuron? Ans: axons
The energy in the chemical bonds of food is known as:
Ans: potential energy
The protein that permits stretching and recoiling of the
skin is Ans: elastin
BIO 121 Final Exam practice 2026
Questions and Answers (100% Correct
Answers) Already Graded A+
Which form of endoplasmic reticulum modifies and
packages newly synthesized proteins? Ans: rough
endoplasmic reticulum
© 2026 Assignment
Which of the following is (are) concerned with maintaining
calcium balance? Ans: all of the above
Guru01 - Stuvia
Chondrocytes are to cartilage as osteocytes are to Ans:
Expert
bone
The diaphragm separates the ____________ from the
____________. Ans: thoracic cavity; abdominopelvic cavity
Unlike cartilage, bone Ans: is highly vascular
The cardiovascular reflexes are based in the Ans: medulla
oblongata
The dominant fiber type in most dense connective tissue
is Ans: collagen
Which of the following bones is not part of the
appendicular skeleton? Ans: sacrum
You are given samples of adipose tissue and muscle tissue
that have equal volumes. After weighing the samples, you
find the sample of muscle tissue has a greater mass. Which
, 2
is true of their densities? Ans: muscle tissue has a greater
density
Intercalated discs and striations are characteristic of Ans:
cardiac muscle tissue
What level of organization is the smallest living level of
organization? Ans: cellular level
Preganglionic neurons of the sympathetic nervous system
© 2026 Assignment
are located in the Ans: lateral gray horns of segments T1
to L2 of the spinal cord.
Guru01 - Stuvia
Expert
As the ________ nerve approaches the knee, it divides into
two branches, the common fibular nerve and the tibial
nerve. Ans: sciatic
The quadriceps group includes all of the following, except
the Ans: biceps femoris
Synaptic vesicles containing neurotransmitters are
released via ________ when the action potential arrives.
Ans: exocytosis
An increased amount of sodium in the extracellular fluid
would lead to: Ans: increase in extracellular fluid volume
Which of the following is not part of the axial division of
the skeletal system? Ans: pectoral girdle
The tough horny superficial layer of the epidermis is
known as the Ans: stratum corneum
, 3
Cells that store fat are called Ans: adipocytes
The Roman numeral VIII indicates the ________ nerve. Ans:
vestibulocochlear
The hormone calcitonin functions to Ans: decrease the
level of calcium ion in the blood
Ions with a + charge are called Ans: cations
© 2026 Assignment
The dorsal root of a spinal nerve contains Ans: axons of
sensory neurons
Guru01 - Stuvia
Expert
Chromosomes consist of Ans: DNA and proteins
If a red blood cell is placed in an isotonic solution, the red
blood cell will: Ans: remain unchanged
Substrate molecules bind to enzymes at the ________ sites.
Ans: active
The plasma membrane is composed of Ans: a bilayer of
phospholipids
Action potentials are electrical signals conducted by which
part of the neuron? Ans: axons
The energy in the chemical bonds of food is known as:
Ans: potential energy
The protein that permits stretching and recoiling of the
skin is Ans: elastin
