Flow cytometry makes use of fluorescence to count microbes
Indicate whether the statement is true or false
TRUE
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A means of detecting the presence of specific carbohydrate moieties on glycoproteins is
A) SDS-PAGE. B) the freeze-fracture technique. C) photobleaching. D) ferritin-conjugated lectins. E) liposome formation.
Components of the first line of defense include all of the following, except
A. the tough cell sheet of the upper epidermis of the skin. B. the flushing action of tears and blinking. C. nasal hairs. D. the flushing action of urine. E. phagocytic white blood cells.
All behavioral traits have an early onset. Indicate whether the statement is true or false
Which one of the following occurs with each cycle of the sodium-potassium pump?
A) Sodium is moved into the cell, creating a net negative charge outside the cell. B) The net effect is removal of one osmotic particle and one positive charge from inside the cell. C) The net effect is removal of one osmotic particle and one negative charge from inside the cell. D) The inside of the cell becomes more negative as potassium is pumped out. E) Two potassium ions and three sodium ions are pumped out of the cell.