Mucus is secreted onto membrane surfaces by ____
a. desmosomes
b. chondrocytes
c. cardiocytes
d. endocrine cells
e. goblet cells
ANSWER: e
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The condition that develops on a previously damaged heart valve is called
A. an aneurysm. B. acute bacterial endocarditis. C. myocarditis. D. subacute bacterial endocarditis.
Which leaf tissue would be most directly affected by a non-functional rubisco enzyme?
A. cuticle B. mesophyll tissue C. upper epidermis D. lower epidermis E. stoma
What is a possible reason deep-sea animals can be much larger than their surface relatives? a. They acquire more nutrients
b. They need their size for protection. c. They have a longer lifespan. d. Larger sized animals can attract mates easily.
Matching I. Even though there may be more than one
correct letter response to some numbered items, discriminate and “juggle” so that you have the one BEST response for each blank. 1. ___ effector 2. ___ excitatory postsynaptic potential 3. ___ ganglion 4. ___ integrator 5. ___ Inhibitory Postsynaptic Potential 6. ___ interneuron 7. ___ muscle spindle 8. ___ myelin sheath 9. ___ neuroglia 10. ___ receptor 11. ___ recovery period 12. ___ response 13. ___ sodium-potassium pump 14. ___ stimulus 15. ___ neurotransmitter molecule A. cells that nurture and support neurons B. a hyperpolarizing event C. a neuron cannot propagate an action potential at this time D. ACh or GABA E. interneuron in brain or spinal cord F. establishes basis of resting membrane potential G. sheathed muscle cells that contain receptors H. input I. integrator cell between sensory and motor J. modified dendrite of a sensory neuron K. a depolarizing event L. output M. muscle or gland N. produced by a Schwann cell O. cluster of cell bodies outside the CNS