Before leaving on a trip, you give your favorite houseplant a little extra water and a pinch of plant food. Your trip ends up lasting a few days longer than you originally planned, and when you return, you discover that your plant has wilted dramatically. What happened?
a. The extra water caused its cells to swell, bursting its plasma membranes.
b. Overwatering your plant deprived it of the electrolytes that plants crave.
c. Your plant dried out before you returned, and it suffered from plasmolysis.
d. The plant food inverted the concentration gradient in the plant, dehydrating it.
c. Your plant dried out before you returned, and it suffered from plasmolysis.
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What is the most abundant metabolic waste produced by animals?
a. ketones b. sodium ions c. ammonia d. uric acid e. water
One reason that malaria continues to be the world's most significant infectious disease is because Plasmodium falciparum continues to develop resistance to the drugs that have been used to treat malaria. This is due to which of the following?
a. Some Plasmodium falciparum have pre-existing mutations that make them resistant to antimalarial drugs b. Some mosquitoes have pre-existing mutations that make them resistant to antimalarial drugs c. Some people have pre-existing mutations that make them resistant to antimalarial drugs d. The antimalarial drugs cause mutations to occur in Plasmodium falciparum e. The antimalarial drugs cause mutations to occur in the mosquito
These results indicate which of the following?
A) Brown is dominant to black. B) Black is dominant to brown and to yellow. C) Yellow is dominant to black. D) There is incomplete dominance. E) Epistasis is involved.
Aminoacyl-tRNA synthetases catalyze covalent addition of ________ ________ to tRNAs.
Fill in the blank(s) with the appropriate word(s).