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.
C
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From which primary germ layer is the epidermis of the skin derived?
A. Endoderm B. Ectoderm C. Mesoderm
Imagine you are trying to create a living, artificial cell in a lab. Considering their role in human cells, explain how you would try to use each of the four types of biological molecules in your artificial cell
For example, explain how you would use one type of molecule to establish a boundary between the water in your test tube and the inside of your artificial cell.
The people who are predicted to succeed on the job because they passed the selection test, and who in fact turn out to be successful employee are identified as.
A. True negatives B. False positives C. False negatives D. True positives
In what segment of the nephron is the greatest fraction of filtered water reabsorbed?
A. the proximal tubule B. the ascending limb of the loop of Henle C. the distal convoluted tubule D. the collecting ducts E. the descending limb of the loop of Henle