Systolic pressure measures
a. the contracting force of the ventricles.
b. the pressure of fully relaxed ventricles.
c. the contracting force of the atria.
d. the pressure of fully relaxed atria.
e. the contracting force of the entire heart
A
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Community ecology is best defined as the study of
A. plant distributions in a given region. B. mutual benefits between organisms at all scales in a region. C. the relationship between abiotic and biotic factors. D. how groups of species interact in the same place at the same time E. global scale influences of major disturbances such as volcanos.
To avoid the introduction of introns into the vector, a ____ copy of mature mRNA is made, using the enzyme ____
a. sDNA; RNA polymerase b. cDNA; DNA ligase c. cDNA; reverse transcriptase d. sDNA; reverse transcriptase e. cDNA; DNA polymerase
Which is NOT a correct association of intestinal disorders?
Select one: a. diarrhea—rapid movement of feces that may result in dehydration b. constipation—too slow movement of feces, permitting hard and dry feces c. polyps—small growths on the epithelial lining that can become cancerous d. hemorrhoids—a sexually contracted disease e. hepatitis—inflammation of the liver
Which of the following is not a type of neuron?
A. motor B. sensory C. afferent D. interneuron E. neuroglia