The sodium-potassium pump is a trans-membrane protein.
a. true
b. false
a. true
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The phase of the cell cycle associated with the doubling of the amount of DNA in the cell is
A) G0. B) G1. C) G2. D) M. E) S.
Red coat is dominant in horses and white coat is recessive. In a cross between a homozygous dominant red-coated
horse and a white-coated horse, what genotype(s) would be observed in the offspring?
a. all homozygous recessive b. all homozygous dominant c. half homozygous dominant and half homozygous recessive d. all heterozygous e. half heterozygous and half homozygous dominant
Which of the following are in order from
primary producer to 4th trophic level? a. grass: coyote: bird: grasshopper b. coyote: bird: grasshopper: grass c. bird: grasshopper: grass: coyote d. grass: grasshopper: bird: coyote e. none of these
During an experiment you are instructed to add sodium chloride, or table salt, to water and observe what happens. Based on the illustrations below, what process did you observe in this experiment?
A) The salt went through a chemical reaction and turned into sodium and chlorine gas. B) The salt evaporated out of the water solution. C) Water was the solute and the salt was the solvent, dissolving in the water. D) Water was the solvent and the salt was the solute, dissolving in the water.