Why do bacteria numbers start to decline when treated with antibiotic C but then begin to increase as time goes on?
A) Some bacteria with resistance to antibiotic C were selected for over time.
B) Additional bacteria were added to the experimental group.
C) Antibiotic C degraded and thus was no longer effective.
D) This is the normal course of bacterial growth no matter which antibiotic is applied.
D) This is the normal course of bacterial growth no matter which antibiotic is applied.
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Mumps is caused by a ________.
A. adenovirus B. paramyxovirus C. morbillis virus D. synctial virus
Some drugs are now being delivered into cells through liposomes, where the drug is surrounded by a phospholipid bilayer. How do the drugs enter into the cell?
A. The drug destroys the liposome and is transported via diffusion into the cell. B. The liposome cuts a hole in the cell and injects the drug into the cell. C. The liposome fuses with the phospholipid bilayer of the cell. D. Protein channels on the cell surface transport the liposomes into the cell.
The ability to control defecation is because the anal sphincter is made of:
a. skeletal muscle b. elastic connective tissue c. fibrous connective tissue d. tendon e. cardiac muscle
Four of the following are associated with mushrooms. Which one is the exception?
a. Gills b. dikaryotic hyphae c. nuclear fusion d. Meiosis e. flagellated spores