All the cells in a cancerous tumor are ____________________ directly descended from one cell
Fill in the blank(s) with correct word
clones
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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. Which of the following is the contributing factor to its resistance?
A. The antimalarial drugs cause mutations to occur in the mosquito. B. Some Plasmodium falciparum have preexisting mutations that make them resistant to antimalarial drugs. C. Some mosquitoes have preexisting mutations that make them resistant to antimalarial drugs. D. The antimalarial drugs cause mutations to occur in Plasmodium falciparum. E. Some people have preexisting mutations that make them resistant to antimalarial drugs.
To which of the following processes is transpiration most analogous?
a. water moving through a water hose b. magnets attracting metal
c. sucking soda through a straw d. a waterfall e. a sponge absorbing a spill
Which of the following should be present in the
human diet in the highest percentage? a. protein b. carbohydrate c. lipid d. vitamins e. minerals
Frederick Griffith discovered
A. transformation. B. transposons. C. the lac operon. D. DNA. E. conjugation.