BIO 270 Hynd JMU Exam 2 || Most Recent 2025/2026 Actual
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How and where can oxidative phosphorylation occur -
ANSWER-in muscle
mitochondria if oxygen is
sufficient
Activity supported by oxidative phosphorylation is called -
ANSWER-aerobic or
endurance
type
Is oxidative phosphorylation fast or slow - ANSWER-slow
How many molecules of ATP is produced by glycolysis -
ANSWER-2
How many molecules of pyruvate is produced by glycolysis -
ANSWER-2
What is pyruvate converted to in glycolysis - ANSWER-lactate
,Activity supported by glycolysis is called - ANSWER-anaerobic
or high intensity
What is atrophy? - ANSWER-decreased muscle mass
What is disuse atrophy? - ANSWER-Reduction in the normal
size of muscle
cells as a result of prolonged
inactivity
What is denervation atrophy - ANSWER-shrinkage of
paralyzed muscle when
connection not
restored
What is age related atrophy - ANSWER-loss of motor neurons
after age 40
What binding protein is present in smooth muscle - ANSWER-
calmodulin
What are three types of filaments in smooth muscle -
ANSWER-Thick myosin
filaments, thin actin filaments, intermediate
size filaments
What do intermediate filaments do? - ANSWER-support cell
shape
,what don't intermediate filaments do? - ANSWER-Participate in
contraction
How are the filaments arranged in smooth muscle? -
ANSWER-in a diagonal
diamond
shape
Are there T tubules in smooth muscle? - ANSWER-no
What is multiunit smooth muscle? - ANSWER-multiple
discrete units that
function
independently
How are multiunit smooth muscles stimulated - ANSWER-
separately by
autonomic nerves
(neurogenic)
Where is multiunit smooth muscle found? - ANSWER-walls
of large blood
vessels, bronchioles, ciliary muscle of the eye,
iris of the eye
What is single unit smooth muscle - ANSWER-muscle fibers
that contract as a
single,
coordinated unit
, How is single unit smooth muscle stimulated - ANSWER-
self excitable
(myogenic)
What are single unit smooth muscles linked by - ANSWER-gap
junctions
Where is single unit smooth muscle found? - ANSWER-
hollow organs of
digestive, reproductive, and
urinary tract
What does the heart do - ANSWER-serves as a pump that
establishes pressure
gradient needed for blood to reach
the tissues
What are blood vessels? - ANSWER-passageways through
which blood is
distributed from the heart to all parts of the body and
back to the heart
what is blood - ANSWER-transport medium within which
materials being
transported are dissolved or
suspended
Complete Real Exam Questions And Verified Answers | 100%
Correct Answers Graded A+ / Guaranteed Success!! Newest
Exam / Just Released!!!
How and where can oxidative phosphorylation occur -
ANSWER-in muscle
mitochondria if oxygen is
sufficient
Activity supported by oxidative phosphorylation is called -
ANSWER-aerobic or
endurance
type
Is oxidative phosphorylation fast or slow - ANSWER-slow
How many molecules of ATP is produced by glycolysis -
ANSWER-2
How many molecules of pyruvate is produced by glycolysis -
ANSWER-2
What is pyruvate converted to in glycolysis - ANSWER-lactate
,Activity supported by glycolysis is called - ANSWER-anaerobic
or high intensity
What is atrophy? - ANSWER-decreased muscle mass
What is disuse atrophy? - ANSWER-Reduction in the normal
size of muscle
cells as a result of prolonged
inactivity
What is denervation atrophy - ANSWER-shrinkage of
paralyzed muscle when
connection not
restored
What is age related atrophy - ANSWER-loss of motor neurons
after age 40
What binding protein is present in smooth muscle - ANSWER-
calmodulin
What are three types of filaments in smooth muscle -
ANSWER-Thick myosin
filaments, thin actin filaments, intermediate
size filaments
What do intermediate filaments do? - ANSWER-support cell
shape
,what don't intermediate filaments do? - ANSWER-Participate in
contraction
How are the filaments arranged in smooth muscle? -
ANSWER-in a diagonal
diamond
shape
Are there T tubules in smooth muscle? - ANSWER-no
What is multiunit smooth muscle? - ANSWER-multiple
discrete units that
function
independently
How are multiunit smooth muscles stimulated - ANSWER-
separately by
autonomic nerves
(neurogenic)
Where is multiunit smooth muscle found? - ANSWER-walls
of large blood
vessels, bronchioles, ciliary muscle of the eye,
iris of the eye
What is single unit smooth muscle - ANSWER-muscle fibers
that contract as a
single,
coordinated unit
, How is single unit smooth muscle stimulated - ANSWER-
self excitable
(myogenic)
What are single unit smooth muscles linked by - ANSWER-gap
junctions
Where is single unit smooth muscle found? - ANSWER-
hollow organs of
digestive, reproductive, and
urinary tract
What does the heart do - ANSWER-serves as a pump that
establishes pressure
gradient needed for blood to reach
the tissues
What are blood vessels? - ANSWER-passageways through
which blood is
distributed from the heart to all parts of the body and
back to the heart
what is blood - ANSWER-transport medium within which
materials being
transported are dissolved or
suspended
