PSIO 305 Block 2 Quizzes (100 OUT OF 100) Questions and Answers (Latest Update)

PSIO 305 Block 2 Quizzes (100 OUT OF 100) Questions and Answers (Latest Update)
To study factors that affect determination of the ectoderm, which of the following could you do
to get a decrease in volume of neural tissue in the developing animal?
Decrease the release of noggin
Increase the release of nerve growth factor
Increase the release of chordin
Decrease the release of bone morphogenic proteins
Decrease the release of noggin
Which of the following is a special piece of the mesoderm that releases neural inducers?
Bone morphogenic organizer
Differentiation organizer
Neural organizer
Spemann organizer
Spemann organizer
Bone morphogenic proteins activate which pathway?
Protein kinase A pathway
Neural induction pathway
Calcium-calmodulin pathway
Smad pathway
Smad pathway
The germ layer that ultimately gives rise to skeletal muscle tissue is the:
Ectoderm
Endoderm
Mesoderm
Mesoderm
Myogenic regulatory factors include all of the following EXCEPT:
Hepatocyte growth factor
Myogenic determining factor
Myogenic factor 5
Myogenic regulatory factor
Hepatocyte growth factor
Which is the correct order for the development of muscle tissue?
(of determination, differentiation, proliferation, and maturation)
determination, proliferation, differentiation, maturation
What type of cells sit outside the sarcolemma of a muscle fiber but below the basement
membrane of the muscle fiber and retain their ability to divide?
Myotubes
Myoblasts
Myostatin cells
Satellite cells
Satellite cells
The experiment that crossed the nerve from a muscle that had a short contraction time "a fast
muscle" to a muscle with a slower contraction profile and from the slower muscle to the faster
muscle demonstrated that the nerve or activity of the muscle had no effect on properties of the
muscle fibers.
True
False
False
Which skeletal muscle fiber type requires continuous neural input or activation to retain its fiber
type properties?
(select all that apply)
The pattern and extent of activity throughout life (type of exercise one does) Fast twitch fibers
Slow twitch fibers
Slow twitch fibers
Nerve growth factor binds to which type of receptor?
Receptor tyrosine kinase
A Rube Goldberg device does which of the following:
Is used in neurophysiology for current injection into a cell
Makes a complex approach out of a simple task
Is used in biochemistry for mixing reagents
Is a type of statistical approach to discern if an effect in significant in physiology
Makes a complex approach out of a simple task
Most trophic factors work in an endocrine fashion.
True
False
False

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