A stalk of celery is placed in a solution of blue colored dye. After one hour, the leaves have blue fluid
in their veins. Which property of water is being demonstrated?
a. adhesion and cohesion
b. evaporation and cooling
c. lower density as a solid than as a liquid
d. high specific heat
e. surface tension
A
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Generally, the only physical finding in a patient with a prolapsed mitral valve is:
A) a chronically irregular heart rate. B) sharp chest pain following strenuous exertion. C) dyspnea and palpitations while in a sitting position. D) a clicking sound heard during cardiac auscultation.
The spread of toxin via circulation is called
A. septicemia. B. bacteremia. C. sepsis. D. toxemia.
Which of the following is CORRECT regarding the viral envelope?
A) It contains only viral proteins. B) It contains only host cell proteins. C) It is composed of sterols. D) It is composed of cellular phospholipid membrane, cellular and viral proteins. E) It is composed of sterols of viral proteins only.
Which of the following antibiotics inhibit translation by blocking the elongation stage? (Select all that apply)
A. chloramphenicol B. tetracycline C. streptomycin D. puromycin E. erythromycin