PSIO 305 Keen Quizzes with well answered questions

PSIO 305 Keen Quizzes with well /| /| /| /| /| /|




answered questions /|




to study factors that affect determination of the ectoderm, which
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of the following could you do to get a DECREASE in volume of
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neural tissue in the developing animal
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-- increase the release of nerve growth factor
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-- decrease the release of noggin
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-- increase the release of chordin
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-- decrease the release of bine morphogenic proteins - CORRECT
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ANSWERS ✔✔-- decrease the release of noggin
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which of the following is a special piece of the mesoderm that
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releases neural inducers? /| /|




-- Spemann organizer
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-- neural organizer
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-- bone morphogenic organizer
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-- differentiation organizer - CORRECT ANSWERS ✔✔-- Spemann
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organizer


bone morphogenic proteins activate which pathway?
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,-- calcium-calmodulin pathway
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-- protein kinase A pathway
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-- neural induction pathway
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-- Smad pathway - CORRECT ANSWERS ✔✔-- Smad pathway
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the germ layer that ultimately gives rise to skeletal muscle tissue
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is the
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-- endoderm
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-- mesoderm
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-- ectoderm - CORRECT ANSWERS ✔✔-- mesoderm
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myogenic regulatory factors include all of the following EXCEPT
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-- hepatocyte growth factor
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-- myogenic determining factor
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-- myogenic factor 5
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-- myogenic regulatory factor - CORRECT ANSWERS ✔✔--
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hepatocyte growth factor /| /|




which is the correct order for the development of muscle tissue?
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-- determination, differentiation, proliferation, maturation
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-- differentiation, determination, proliferation, maturation
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-- determination, proliferation, differentiation, maturation
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,-- differentiation, proliferation, determination, maturation -
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CORRECT ANSWERS ✔✔-- determination, proliferation, /| /| /| /| /|



differentiation, maturation /|




what type of cells sit outside the sarcolemma of a muscle fiber but
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below the basement membrane of the muscle fiber and retain
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their ability to divide?
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-- myotubes
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-- myostatin cells
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-- satellite cells
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-- myoblasts - CORRECT ANSWERS ✔✔-- satellite cells
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the experiment that crossed the nerve from a muscle that had a
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short contraction time "a fast muscle" to a muscle w/ a slower
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contraction profile and from the slower muscle to the faster
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muscle demonstrated that the nerve or activity of the muscle had
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no effect on properties of the muscle fibers
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-- true
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-- false - CORRECT ANSWERS ✔✔-- false
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which skeletal muscle fiber type requires continuous neural input
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or activation to retain its fiber type properties?
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-- the pattern and extent of activity throughout life (type of
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exercise one does) fast twitch fibers /| /| /| /| /|

, -- slow twitch fibers - CORRECT ANSWERS ✔✔-- slow twitch fibers
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nerve growth factor binds to which type of receptor?
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-- receptor serine/threonine kinase
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-- receptor guanylyl cyclase
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-- receptor tyrosine kinase
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-- receptor tyrosine phosphatases - CORRECT ANSWERS ✔✔--
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receptor tyrosine kinase /| /|




a Rube Goldberg device does which of the following
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-- is used in biochemistry for mixing reagents
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-- is a type of statistical approach to discern if an effect in
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significant in physiology /| /| /|




-- is used in neurophysiology for current injection into a cell
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-- makes a complex approach out of a simple task - CORRECT
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ANSWERS ✔✔-- makes a complex approach out of a simple task
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most trophic factors work in an endocrine fashion
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-- true
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-- false - CORRECT ANSWERS ✔✔-- false
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