A spider's chelicerae _____
a. detect light c. produce silk
b. inject venom d. eliminate excess water
B
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After the depolarization phase of an action potential, the resting potential is restored by _____
A) the opening of sodium activation gates B) the opening of voltage-gated potassium channels and the closing of sodium channels C) a decrease in the membrane's permeability to potassium and chloride ions D) a brief inhibition of the sodium-potassium pump E) the opening of more voltage-gated sodium channels
Human development begins with fertilization, but the fertilized egg does not begin to divide until after it implants in the uterine wall
A. true B. false
In the streak plate method, what is the best way to ensure that the loop is cool, after it has been flamed?
A) Touch the loop to your finger to determine the temperature B) Touch the loop to an uninoculated area of the plate C) Touch the loop to an inoculated area of the plate
Unmethylated CpG islands are correlated with inactive genes.
Answer the following statement true (T) or false (F)