Which one of the following does NOT apply to RNA?
A. It is a single strand.
B. It contains the base uracil.
C. The sugar is deoxyribose.
D. It is involved in translation and transcription.
C. The sugar is deoxyribose.
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Evaporation of sweat helps ____ a(n) ____ body temperature
a. lower; depressed b. raise; depressed c. lower; elevated d. raise; elevated e. maintain; average
In the sequence of permeability changes for a complete action potential, the first of these events that occurs is the _____
A) activation of the sodium-potassium "pump" B) inhibition of the sodium-potassium "pump" C) opening of voltage-gated sodium channels D) closing of voltage-gated potassium channels E) opening of voltage-gated potassium channels
Particular mutations in the cystic fibrosis transmembrane conductance (CFTR) gene result in a CFTR
molecule that transports sodium ions poorly or not at all.
Indicate whether the statement is true or false.Which insecticide has been outlawed in the United States but not in Latin America?
a. DDT b. pyrethrum c. inorganic phosphates d. biological insecticides e. sulfur-containing insecticides