Bio 151: A&P Final Exam Latest Update
Questions with Correct Answers Graded
A Download (100 out of 100)
A brief contraction of all muscle fibers in a motor unit in response to a single action potential moving
down the somatic motor neuron is known as - Answer -twitch contraction
A fasciculus is a subunit of a skeletal muscle surrounded by ________________. - Answer -
perimysium
A single action potential will create a single momentary contraction, not a continuous contraction. -
Answer -True
A skeleton that exhibits a partially closed epiphyseal plate would likely be that of a: - Answer -An
adolescent
A tissue is a group of cells that usually have a common origin in the embryo and function together to
carry out specialized activities. - Answer -True
active transport - Answer -the movement of ions or molecules across a cell membrane into a
region of higher concentration, assisted by enzymes and requiring energy.
Adherens junctions are composed of a protein plaque, microfilaments and transmembrane proteins. -
Answer -True
Albinism is the inherited inability to produce - Answer -melanin
All connective tissues consist of two basic elements: cells and __________. - Answer -extracellular
matrix
Amphipathic molecules are: - Answer -both hydrophilic (polar) and hydrophobic (non-polar)
Anatomy - Answer -the study of body structures and the relationships of structures
As long as the levels of calcium and ATP inside the cell are adequate then the contraction cycles will
repeatedly occur. - Answer -True
As newly formed cells of the stratum basale are pushed to the surface, they accumulate keratin and
undergo apoptosis. This process is referred to as ________. - Answer -Keratinization
At the end of contraction, the sarcomere returns to its relaxed position when - Answer -Calcium
pumps remove calcium ions from the sarcomere and put them back into storage in the sarcoplasmic
reticulum.
Atoms - Answer -the smallest units of matter that participate in chemical reactions
,ATP is hydrolyzed by the myosin tail. - Answer -False
Bone is a type of ________ because it contains an extracellular matrix that surrounds widely spaced
cells. - Answer -Connective tissue
Bone remodeling, especially bone resorption, plays a role in the maintenance of proper levels of calcium
in the blood. - Answer -True
Bone remodeling: - Answer -Involves replacement of old bone tissue with new bone tissue
Involves bone resorption and bone deposition
Involves osteoclasts and osteoblasts
All of these
By what process does the motor neuron stimulate the muscle cell? - Answer -Neurotransmitter is
released into the synaptic cleft to cause an action potential in the muscle cell.
By which process, as an individual grows to adulthood, is the thickness (diameter) of bone increased? -
Answer -appositional growth
Calcitonin (CT) decreases blood Calcium. - Answer -True
Calcitonin is produced by the parathyroid gland. - Answer -False
Cardiac and smooth muscle are striated. - Answer -False
Cardiovascular Physiology - Answer -functions of the heart and blood vessels
Carrier (integral) - Answer -transports a specific substance across membrane by undergoing a
change in shape
Cell Biology - Answer -cellular structure and functions
cell identity marker (glycoprotein) - Answer -distinguishes your cells from anyone else's (unless you
are an identical twin); an important class of such markers are the major histocompatibility (MHC)
proteins.
Cells - Answer -the basic unit of structure and function in all living things
Choose the following statements that describe keratin.
1. Keratin is a tough, fibrous protein.
2. Keratin is used for pigmenting skin.
3. Keratin helps protect the skin.
4. Keratin participates in immune responses.
, 5. Keratin protects the skin from UV light. - Answer -1 and 3
Clinical Anatomy - Answer -the application of anatomy to the practice of medicine, dentistry, and
other health-related sciences, for example, to aid in the diagnosis and treatment of disease
Developmental Biology - Answer -the growth and development of an individual from fertilization
to death
Differences in skin pigmentation are due to the number of melanocytes in the basal layer of the skin.
People with darker skin have many more melanocytes than people with paler skin. - Answer -False
Differentiation - Answer -change in a cell from an unspecialized state to a specialized state
Diffusion - Answer -the movement of molecules from an area of high concentration to an are of
low concentration
During arm flexion, the type of contraction that would occur in triceps brachii is - Answer -
eccentric isotonic contraction
During endochondral ossification in a fetus, bones initially develop as a cartilage model that was formed
from - Answer -mesenchyme
During muscle relaxation, what does tropomyosin block? - Answer -myosin-binding sites on actin
Embryology - Answer -the first eight weeks of growth and development after fertilization of a
human egg; the earliest stage of developmental biology
Endocrinology - Answer -hormones (chemical regulators in the blood) and how they control body
functions.
endocytosis, exocytosis & transcytosis - Answer -endo - into a cell
exo - out of a cell
trans - endo + exo (both)
Enzyme (integral and peripheral) - Answer -catalyzes reaction inside or outside cell (depending on
which direction the active site faces)
Epithelial and connective tissues are found adjacent to each other because: - Answer -Epithelium
is avascular and needs to exchange oxygen, nutrients and waste with the blood of highly vascular
connective tissue.
Even at rest, a skeletal muscle exhibits a small amount of tautness or tension in the muscle due to weak,
involuntary contractions of its motor units which could be seen easily in a well trained athlete. What is
this characteristic? - Answer -muscle tone
Exercise Physiology - Answer -changes in cell and organ functions due to muscular activity
faciliated diffusion - Answer -can't move freely across membrane
Questions with Correct Answers Graded
A Download (100 out of 100)
A brief contraction of all muscle fibers in a motor unit in response to a single action potential moving
down the somatic motor neuron is known as - Answer -twitch contraction
A fasciculus is a subunit of a skeletal muscle surrounded by ________________. - Answer -
perimysium
A single action potential will create a single momentary contraction, not a continuous contraction. -
Answer -True
A skeleton that exhibits a partially closed epiphyseal plate would likely be that of a: - Answer -An
adolescent
A tissue is a group of cells that usually have a common origin in the embryo and function together to
carry out specialized activities. - Answer -True
active transport - Answer -the movement of ions or molecules across a cell membrane into a
region of higher concentration, assisted by enzymes and requiring energy.
Adherens junctions are composed of a protein plaque, microfilaments and transmembrane proteins. -
Answer -True
Albinism is the inherited inability to produce - Answer -melanin
All connective tissues consist of two basic elements: cells and __________. - Answer -extracellular
matrix
Amphipathic molecules are: - Answer -both hydrophilic (polar) and hydrophobic (non-polar)
Anatomy - Answer -the study of body structures and the relationships of structures
As long as the levels of calcium and ATP inside the cell are adequate then the contraction cycles will
repeatedly occur. - Answer -True
As newly formed cells of the stratum basale are pushed to the surface, they accumulate keratin and
undergo apoptosis. This process is referred to as ________. - Answer -Keratinization
At the end of contraction, the sarcomere returns to its relaxed position when - Answer -Calcium
pumps remove calcium ions from the sarcomere and put them back into storage in the sarcoplasmic
reticulum.
Atoms - Answer -the smallest units of matter that participate in chemical reactions
,ATP is hydrolyzed by the myosin tail. - Answer -False
Bone is a type of ________ because it contains an extracellular matrix that surrounds widely spaced
cells. - Answer -Connective tissue
Bone remodeling, especially bone resorption, plays a role in the maintenance of proper levels of calcium
in the blood. - Answer -True
Bone remodeling: - Answer -Involves replacement of old bone tissue with new bone tissue
Involves bone resorption and bone deposition
Involves osteoclasts and osteoblasts
All of these
By what process does the motor neuron stimulate the muscle cell? - Answer -Neurotransmitter is
released into the synaptic cleft to cause an action potential in the muscle cell.
By which process, as an individual grows to adulthood, is the thickness (diameter) of bone increased? -
Answer -appositional growth
Calcitonin (CT) decreases blood Calcium. - Answer -True
Calcitonin is produced by the parathyroid gland. - Answer -False
Cardiac and smooth muscle are striated. - Answer -False
Cardiovascular Physiology - Answer -functions of the heart and blood vessels
Carrier (integral) - Answer -transports a specific substance across membrane by undergoing a
change in shape
Cell Biology - Answer -cellular structure and functions
cell identity marker (glycoprotein) - Answer -distinguishes your cells from anyone else's (unless you
are an identical twin); an important class of such markers are the major histocompatibility (MHC)
proteins.
Cells - Answer -the basic unit of structure and function in all living things
Choose the following statements that describe keratin.
1. Keratin is a tough, fibrous protein.
2. Keratin is used for pigmenting skin.
3. Keratin helps protect the skin.
4. Keratin participates in immune responses.
, 5. Keratin protects the skin from UV light. - Answer -1 and 3
Clinical Anatomy - Answer -the application of anatomy to the practice of medicine, dentistry, and
other health-related sciences, for example, to aid in the diagnosis and treatment of disease
Developmental Biology - Answer -the growth and development of an individual from fertilization
to death
Differences in skin pigmentation are due to the number of melanocytes in the basal layer of the skin.
People with darker skin have many more melanocytes than people with paler skin. - Answer -False
Differentiation - Answer -change in a cell from an unspecialized state to a specialized state
Diffusion - Answer -the movement of molecules from an area of high concentration to an are of
low concentration
During arm flexion, the type of contraction that would occur in triceps brachii is - Answer -
eccentric isotonic contraction
During endochondral ossification in a fetus, bones initially develop as a cartilage model that was formed
from - Answer -mesenchyme
During muscle relaxation, what does tropomyosin block? - Answer -myosin-binding sites on actin
Embryology - Answer -the first eight weeks of growth and development after fertilization of a
human egg; the earliest stage of developmental biology
Endocrinology - Answer -hormones (chemical regulators in the blood) and how they control body
functions.
endocytosis, exocytosis & transcytosis - Answer -endo - into a cell
exo - out of a cell
trans - endo + exo (both)
Enzyme (integral and peripheral) - Answer -catalyzes reaction inside or outside cell (depending on
which direction the active site faces)
Epithelial and connective tissues are found adjacent to each other because: - Answer -Epithelium
is avascular and needs to exchange oxygen, nutrients and waste with the blood of highly vascular
connective tissue.
Even at rest, a skeletal muscle exhibits a small amount of tautness or tension in the muscle due to weak,
involuntary contractions of its motor units which could be seen easily in a well trained athlete. What is
this characteristic? - Answer -muscle tone
Exercise Physiology - Answer -changes in cell and organ functions due to muscular activity
faciliated diffusion - Answer -can't move freely across membrane
