You sprain your ankle at a roller derby practice. How would you treat your injury?
A) Use ice only because it will reduce swelling and increase blood flow to aid healing.
B) Just leave it alone. Ice and heat both make the injury worse.
C) First use ice to reduce swelling, and then use heat much later to aid healing.
D) First use heat to aid healing, and use ice later to reduce swelling.
Answer: C
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Which of the following is not true of the genes encoding the enzymes required for transporting and metabolizing galactose in yeast?
A. Each of the GAL genes is transcribed separately. B. The GAL genes are arranged in an operon. C. All of the GALgenes have similar promoters. D. All of the GAL genes are coordinately regulated by a common set of proteins.
Microbial ecologists seek to understand how microbes drive and respond to the biogeochemical cycles that are essential for life on Earth. However, at this time it is only possible to make any concrete connections, identifications, or measurements about the abiotic flux of nutrients rather than the interactions between microbes that make these fluxes possible.
Answer the following statement true (T) or false (F)
The antiparallel arrangement within DNA molecules refers to
A. a purine always bonding to a pyrimidine. B. each base bonding at the 1' position of the sugar. C. one helix strand that runs from the 5' to 3' direction and the other strand runs from the 3' to 5' direction. D. an original parent DNA strand and one newly synthesized DNA strand comprising a new DNA molecule.
Sewage pollution is especially problematic in coastal areas
a. that are sparsely populated. b. after drought. c. after prolonged rains. d. having fast moving currents.