Dwain is drinking a cup of coffee which has a pH of 5. Compare Dwain's coffee to his friend's coffee which has a pH of 6
What will be an ideal response?
Each single digit change on the pH scale corresponds to a 10-fold change in hydrogen ion concentration. Dwain's coffee, with a pH of 5, is 10 times more acidic than his friend's coffee, with a pH of 6. The hydrogen ion concentration increases 10-fold from a pH of 6 to a pH of 5.
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Which of the following is not a property of articular cartilage?
A) covered by perichondrium B) lubricated by synovial fluid C) enclosed by an articular capsule D) similar to hyaline cartilage E) smooth, low-friction surface
Which of the following evolutionary adaptations would result in an increase in the speed of conduction of action potentials by decreasing the longitudinal resistance of the axon?
a. increasing the number of channels in the plasma membrane b. myelinating the axon c. increasing the diameter of the axon d. placing all voltage-gated ion channels at distant intervals e. None of these.
The deepest abdominal muscle is the ________ abdominal.
Fill in the blank(s) with the appropriate word(s).
________ form the myelin sheath around axons in PNS.
A. Ependymal cells B. Oligodendrocytes C. Microglial cells D. Astrocytes E. Schwann cells