Which one of the following ions outside the neuron would make it very difficult for a depolarization to occur?
A) potassium
B) sodium
C) chloride
D) manganese
C
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In healthy adult humans, normal systolic pressure is ____ mm Hg and normal diastolic pressure is ____ mm Hg
a. 20 to 50; 5 to 20 b. 60 to 80; 90 to 120 c. 90 to 120; 60 to 80 d. 90 to 120; 130 to 150 e. 130 to 150; 90 to 120
A bacterial culture has been exposed to UV radiation and is preparing to repair the DNA damage. Describe two mechanisms of repair used by E. coli to repair UV-induced DNA damage
Would you expect the bacteria to be able to repair more of the damage or less of the damage if they were placed in a dark environment after UV damage?
Describe the problems associated with a terrestrial existence and some of the adaptations of some animals for dealing
with these problems. What will be an ideal response?
Water temperature, and therefore global warming, plays a vital role in: a. population stocks
b. none of these choices. c. species distribution. d. species diversity.