What happens to a cell that is placed in a hypotonic solution?
a. The cell swells.
b. The cell shrinks.
c. The cells stays the same size.
d. The cell will crenate.
a. The cell swells.
You might also like to view...
The type of skeleton that consists of fluid constrained within a layer of flexible tissue is a(n)
A. vascular canal. B. endoskeleton. C. gastrovascular cavity. D. exoskeleton. E. hydrostatic skeleton.
Muscle fibers (muscle cells) are filled with myofibrils which in turn are filled with the contractile filaments myosin and actin.
a. true b. false
Alexander Fleming had been running tests using Staphylococcus, and he left some plates out to incubate. Evidently, after returning to his lab after the weekend, he found that Penicillium mold was growing on his agar plates containing the growth of Staphylococcus. Looking more closely, he found a large, clear area around the mold colony where Staphylococcus colonies did not grow. Given this situation, a valid hypothesis would be that
A. the bacteriological medium being used in the plates was somehow inhibitory to the Staphylococcus growth. B. the room temperature incubation was inhibitory to the growth of Staphylococcus. C. the Staphylococcus was being inhibited by the Penicillium mold. D. the Penicillium mold was being killed by the Staphylococcus.
Controls are necessary in scientific experiments because they
A. serve as a basis for comparison with the experimental results. B. enable the investigator to control the results. C. always confirm your observation. D. allow the investigator to develop experience in science.