HIV/AIDS is one of the ten top causes of death in the United States.
a. true
b. false
Answer: b. false
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Virus receptors are often not distributed uniformly over the surface of host cells, but are instead concentrated in lipid rafts.
Answer the following statement true (T) or false (F)
The sputum of a 75-year-old man with chronic lung infections yields the following: • Many gram-negative coccobacilli in Gram stain • X and V factors required for growth • Nonhemolytic on rabbit blood agar The organism can be identified as:
a. Haemophilus aegyptius. b. H. parainfluenzae. c. Haemophilus haemolyticus. d. H. influenzae.
When one cell goes through cell division, it produces ________.
A. four identical cells B. two different cells C. two identical cells D. four different cells
Which of the following would be a good choice to accurately measure 1.0ml? (Choose all that apply)
> 50ml serological pipette > 1.0ml transfer pipette > P-20 micropipette > 5ml graduated cylinder a small beaker > 1.0ml serological pipette > P-1000 micropipette > 1L graduated cylinder > P-200 micropipette