Sludge
A. is a byproduct of sewage treatment.
B. may be a source of pollution.
C. takes up space in a landfill.
D. All of the choices are correct.
D. All of the choices are correct.
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Which of the following would not be found in a vial containing DNA?
a. nucleotides b. phosphate c. adenine d. uracil
DNA polymerases used in PCR
A. must remain active at very cold temperatures. B. include Taq polymerases and Vent polymerase. C. use an RNA template to make complementary DNA. D. are labeled with fluorescent dyes.
The organelle that is compared to a whip is a
a. microfilament. b. basal body. c. microvillus. d. flagellum. e. microtubule.
In a severe allergic reaction, a person's tongue can swell up, effectively blocking the air passageways. An emergency procedure can be performed to restore airflow
Basically, a hole is cut into the passageways below the blockage to allow air to flow into the lungs. What passageway would be best for the surgical hole?