During the process of gel electrophoresis, the DNA fragments migrate due to the effects of ____
a. gravity
b. vibrations
c. electrical charge
d. magnetic attraction
e. centrifugal force
c
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Oxygen moves from alveoli to the bloodstream
a. because the concentration of oxygen is greater in alveoli than in the blood. b. mainly due to the activity of carbonic anhydrase in the red blood cells. c. because of its attraction to hemoglobin. d. to counter the high concentration of CO2 in the blood. e. because of all of these.
What has the classification of fungi traditionally been based on?
a. on body type b. on whether the fungus is a saprobe, a parasite, or in a mutual symbiosis c. on mode of feeding d. on structures that release sexual spores
If two species of plants bloom during different seasons in the same habitat, this is known as
A. behavioral isolation. B. mechanical isolation. C. temporal isolation. D. ecological isolation. E. geographical isolation.
What hazardous material do fluorescent light bulbs contain, making it important to dispose of them properly?
A- aluminum B- carbon C- lead D- uranium E- mercury