Glucose, a small uncharged molecule, can pass through the cell membrane, but sodium ions do not pass through the membrane easily. What is the most accurate explanation for these findings?
a. Cell membranes have carrier proteins for glucose but not for sodium.
b. The cell membrane is semipermeable.
c. The membrane potential makes it difficult for sodium ions to diffuse across the membrane.
d. The sodium-potassium pump keeps sodium inside the cell.
b. The cell membrane is semipermeable.
Glucose can pass through the cell membrane but sodium ions do not pass through the membrane easily is an example of cell membrane that is semipermeable.
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for example, in producing the masking effect. On the basis of this research, we can conclude that a. demand characteristics probably cannot explain the results. b. the propositional-coding explanation is likely to be correct. c. visual imagery is stronger than auditory or motor imagery. d. experimenter expectancy consistently influences the research on mental imagery.
If a person were to say that a scientific finding was replicated, he or she would be saying that the finding was:
a) accurate and truthful. b) capable of being consistently duplicated. c) not the result of correlation. d) parsimonious and straightforward.
How is chronic otitis media, which is uncuredafter six months of antibiotics treated?
a. Different antibiotics are tried b. The child is taken off of all antibiotics and a wait and see approach is warranted c. Tubes are surgically inserted d. The ears are manually drained of infection by the pediatrician
In bottom-up processing, the perception of a particular visual scene is created from:
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