What is the definition of inspiration?
A) Another term from breathings
B) To conduct air from the lungs to the atmosphere
C) An exchange of gases at the cellualar level
D) Conducting air from the atmosphere to the lungs
Answer: D) Conducting air from the atmosphere to the lung
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Organisms that have descended from the same initial group and have the ability to interbreed belong to the same
a. genus. b. species. c. class. d. family. e. order.
Titration of valine by a strong base, for example NaOH, reveals two pK's. The titration reaction occurring at pK2 (pK2 = 9.62) is:
A) —COOH + OH? ? —COO? + H2O. B) —COOH + —NH2 ? —COO? + —NH2+. C) —COO? + —NH2+ ? —COOH + —NH2. D) —NH3+ + OH? ? —NH2 + H2O. E) —NH2 + OH? ? —NH? + H2O.
A microbiologist is attempting to check for the presence of Mycobacterium tuberculosis in a sputum sample. This particular bacterium, if present, would have a particularly impervious outer wall. What type staining technique might be used to check for this bacterium?
A) Gram stain B) simple stain C) negative stain D) acid-fast stain
Refrigeration is an effective germicidal method.
Answer the following statement true (T) or false (F)