End of the digestive tract opening to the outside of the body_______________
Fill in the blank(s) with the appropriate word(s).
anus
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Anaerobic organisms thrive:
a. in oxygen-free environments. b. where oxygen is abundant. c. where carbon dioxide is abundant. d. in surface waters of the ocean. e. in the middle of the water column.
The nitrogenous base found in DNA but not in RNA
is a. adenine. b. cytosine. c. guanine. d. uracil. e. thymine.
Sickle cell anemia is a genetic disease caused by the replacement of one amino acid in the hemoglobin
molecule. This replacement changes the shape and function of the hemoglobin protein in dramatic ways, which can sometimes be lethal. How can the substitution of one amino acid lead to such drastic results?What will be an ideal response?
If you had to choose, where would you rather get infected with a serious bacterial disease?
A) In a hospital, where most of the bacteria are probably already weakened by antibiotics in the environment. B) In a livestock barn where the animals have been treated with antibiotics. C) In a big city where antibiotics are routinely prescribed by doctors. D) In a remote, sparsely populated area where the bacteria have not been exposed to antibiotic drugs. E) It doesn't make any difference a serious bacterial illness is going to have a similar impact on your health regardless of where you pick it up.