GBIO 225 WEEK 2 EXAM 2/ GBIO 225 WEEK 2 EXAM 2

Jul 21st, 2016
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Exam 1) Acids act as (1pts) hydroxyl ions. hydrogen ion acceptors. proton donors as do bases. proton donors while a base accepts protons. 2) A base has a pH that is (1pts) above 7. equal to 7. below 7. 3) The buffer system is essential for overall body homeostasis. What condition is due to an increase in blood pH? (1pts) acidosis. alkalosis. carbonic acid. coma. 4) What is a neurotransmitter? (1pts) A chemical messenger that carrier signals from a neuron to a receiving cells across a synapse. A chemical signal that is active at troponin active sites. A hormonal signal that causes only muscle contractions. An electrical signal that carrier signals from a neuron to a receiving cells across a synapse. 5) What is the neuromuscular junction? (1pts) A site where an electrical signal directly passes from a muscle to a neuron. A site where an axon comes close to the cell membrane of a muscle. A site where a dendrite comes close to the cell me

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GBIO 225 WEEK 2 EXAM 2Exam1) Acids act as(1pts)hydroxyl ions.hydrogen ion acceptors.proton donors as do bases.proton donors while a base accepts protons.2) A base has a pH that is(1pts)above 7.equal to 7.below 7.3) The buffer system is essential for overall body homeostasis. What condition is due to anincrease in blood pH?(1pts)acidosis.alkalosis.carbonic acid.coma.4) What is a neurotransmitter?(1pts)A chemical messenger that carrier signals from a neuron to a receiving cells across a synapse.A chemical signal that is active at troponin active sites.A hormonal signal that causes only muscle contractions.An electrical signal that carrier signals from a neuron to a receiving cells across a synapse.5) What is the neuromuscular junction?(1pts)A site where an electrical signal directly passes from a muscle to a neuron.A site where an axon comes close to the cell membrane of a muscle.A site where a dendrite comes close to the cell membrane of a muscle.6) How does calcium relate to muscle contractions?(1pts)Calcium binds to tropomyosin and enables actin and myosin to interact.Calcium binds to acetylcholine and enables actin and myosin to interact.Calcium binds to actin and enables actin and myosin to interact.Calcium binds to troponin and enables actin and myosin to interact.7) The principal job of the human nervous system is to(1pts)store information.provide for defense against pathogens.facilitate communication among the body systems.rep

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