The electrochemical gradient that determines how a charged ion will move through a permeable membrane depends upon
A. the electrical forces acting on that ion.
B. the ratio between the charge on the ion and its atomic mass.
C. the combined effects of electrical forces and concentration differences across the membrane.
D. the difference in concentration of that ion on either side of the membrane.
E. All of the answers are correct.
Answer: C
You might also like to view...
________ enables a single gene to encode two or more polypeptides that are different in their amino acid sequence.
A. Reverse transcription B. Self-splicing C. Capping D. Alternative splicing E. Regulatory splicing
Which of the following statements is true according to the endosymbiotic theory?
A) Mitochondria and chloroplasts developed from organisms that were once free-living B) Bacteria were engulfed by larger cells and became the nucleus of those cells C) Photosynthesis algae evolved from plants D) None of the choices are correct E) Bacterial flagella have the same evolutionary origin as eukaryotic flagella
Which structure is NOT associated with the development of the central nervous system in vertebrates?
A. neural tube B. neural plate C. ectoderm D. notochord
Rods and cones are located in the ____.
A. lens B. cornea C. pupil D. iris E. retina