Turgor pressure in plant cells is
A. due in part to osmosis.
B. a result of the walled cell being in a hypotonic environment.
C. All of the answer choices are correct.
D. the force of water against the inside of the cell wall.
E. necessary to keep plants from wilting.
C. All of the answer choices are correct.
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Which of the following isnot true of the fruit fly Hedgehog (Hh) protein?
A. Hh is a member of the Wnt signaling pathway. B. Hh expression is activated by the transcription factor engrailed (en). C. Hh is secreted and interacts with Wg-producing cell receptors. D. Hh functions as a signaling molecule at segment boundaries.
A ________ is a deformity that looks like a tumor that results from a subcutaneous fungal infection.
Fill in the blank(s) with the appropriate word(s).
Red blood cells are characterized as having an actin cytoskeleton associated with their plasma membrane. The presence of the membrane cytoskeleton most likely accounts for:
A. the shape of the cell. B. enhanced gas exchange. C. the ability of these cells to fit through narrow capillaries. D. All of the above statements are correct.
Eukaryotic DNA methylation occurs on which base?
A. guanine B. cytosine C. thymine D. adenine E. thymine and adenine