Water moving up into a paper towel is attributable to:
A. adhesion
B. heat storage
C. electronegativity
D. cohesion
E. high heat of vaporization
Answer: A
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Which of the following describes the event depicted on the right side of the figure?
a. active transport of H+ ions
b. oxidation of ADP
c. ATP synthesis by oxidative phosphorylation
d. substrate level phosphorylation
Recall that leaves form in distinct arrangements (whorled, opposite or alternate) on the stems of vascular plants. How might chemical factors secreted by neighboring structures cause new leaves to form in these particular patterns?
Select all correct choices. A. Leaf primordia secrete chemical inhibitors that prevent the formation of leaves nearby. B. Leaf primordia secrete chemical activators that promote the formation of leaves nearby. C. Mature leaves secrete chemical inhibitors that prevent the formation of leaves nearby. D. Mature leaves secrete chemical activators that promote the formation of leaves nearby.
The tall ferns that we typically see in the tropics and temperate woodlands are the ________.
A. gametes B. spores C. sporophytes D. gametophytes
The methanogenic archaeans are ____ that pull
electrons from ____. a. chemoautotrophs; oxygen b. chemoheterotrophs; carbon dioxide c. chemoautotrophs; water d. chemoheterotrophs; methane e. chemoautotrophs; hydrogen gas