Water that moves through living cells in a root is following the ____
a. symplastic pathway only
b. transmembrane and symplastic pathways
c. transmembrane pathway only
d. apoplastic, transmembrane, and symplastic pathways
e. apoplastic pathway only
ANSWER: b
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Which of the following kinds of traits was originally used for classifying organisms into taxonomic
categories?
a. morphology and behavior b. DNA and amino acid sequences c. physiology and biochemical pathways d. geography and ecology e. morphology and physiology
The type of digestion performed by digestive enzymes is __________ digestion.
Fill in the blank(s) with the appropriate word(s)
The hormone that is antagonistic in action to glucagon is
a. norepinephrine. b. insulin. c. thyroxine. d. epinephrine. e. mineralocorticoids.
Which extraembryonic membrane produces HCG?
a. yolk sac b. amnion c. chorion d. allantois e. umbilical cord