Which part of an amino acid is always acidic?
a. Amino functional group
b. Carboxyl functional group
c. Side chain ("R group")
d. None of the above
Ans: b. Carboxyl functional group
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Humans have disrupted the nitrogen cycle primarily by ____
a. irrigation b. cutting down forests c. using nitrogen-containing fertilizers d. crop rotation e. leaching
What is proprioception?
A) the sense of pressure on the body B) the sense of the position of the body C) the sense of smell D) the sense of the body's temperature
A fungal ________ is light enough to be carried for miles in the wind, dispersing the fungus to new areas.
Fill in the blank(s) with the appropriate word(s).
Which of the following characteristics of genetic material accounts for the need to get a flu vaccine every year, but a polio vaccine once in a life time?
A. transmission B. variation C. information D. replication and transmission E. replication