Which of the following characterizes the symplastic pathways in the root?
a. the water moves into and through living cells and is moving through the cytoplasm
b. the water moves into and through living cells and is moving through the cell wall
c. the water moves into and through nonliving cells and is moving through the cytoplasm
d. the water moves into and through nonliving cells and is moving through the cell wall
Ans: a. the water moves into and through living cells and is moving through the cytoplasm
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The initial influx of sodium ions when an
action potential begins causes which of the following to follow?
a. a chain reaction in which more and more sodium channels open b. a chain reaction in which potassium channels open c. sodium channels rapidly close d. potassium channels rapidly close e. the cytoplasm becomes more negatively charged
Viruses that infect bacteria are:
not known to exist. prions. bacteriophages. composed of only proteins. viroids. .
Which is not true of placoderms?
a. They gave birth to live young. b. They had jaws. c. They had teeth. d. They had paired pelvic fins. e. They had paired pectoral fins
waste
What will be an ideal response?