A student was given a stained smear to observe. Upon observation, the student noted rod-shaped bacteria that were clear and unstained against a darker background. What sort of stain was performed on this slide?
A. Gram stain
B. negative stain
C. simple stain
D. acid-fast stain
Answer: B
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All are true about a dehydration reaction EXCEPT which of the following?
A. Results in removal of a water molecule. B. Essential for the breakdown of complex molecules to simple ones. C. Essential to the formation of polymers. D. Essential for the formation of glycogen from glucose monomers. E. Essential for the formation of triglycerides (fat) from glycerol and fatty acids.
The Golgi complex ____
a. receives proteins made in the rough ER and chemically modifies them b. synthesizes proteins for export from the cell c. stores nucleic acids d. synthesizes lipids e. stores ribosomes
If a cell is placed into a hypotonic solution, the concentration of solutes in the solution is higher than the concentration of solutes in the cell.
a. true b. false
The only helminth disease of humans spread by an insect vector is
A) ascariasis. B) fascioliasis. C) filariasis. D) hydatid disease. E) schistosomiasis.