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
Answer: B) Touch the loop to an uninoculated area of the plate
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In an aquatic microbial community where a photoautotroph, chemoorganoheterotroph, and nitrogen fixing bacterium are present, predict an environmental perturbation that would cause only one to be outcompeted by the other two groups and explain how each group would respond
What will be an ideal response?
Answer the question by using the accompanying graph. The optimal pH for enzyme 1 is ____
a. 2 b. 3 c. 4 d. 7 e. 8
The term _________ refers to the alternating surges of pressure in an artery that occur with each contraction and relaxation of the left ventricle.
a. diastole b. murmur c. pulse d. systole
The hydrologic cycle is different from other nutrient cycles in that
A) the atmosphere is involved. B) water is not recycled, but flows one way through ecosystems. C) the biotic part of the cycle plays only a small role. D) the soil is not involved. E) the ocean is involved.