Where is the palisade mesophyll positioned within the leaf?
a. One layer above the lower epidermal surface
b. Within the vascular layer
c. On the lower epidermal layer
d. One layer below the upper epidermal surface
e. On the upper epidermal surface
d
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Most Devonian osteolepiforms had strong, stout fins that enabled them to crawl on the muddy bottom of shallow
pools.
a. True b. False
Dynein is a molecular motor that:
a. Moves cargo to the plasma membrane b. Moves cargo to the actin filaments c. Moves cargo to the centrosome d. Acts as an actin filament e. None of the above
How can an individual whose parents did not have the "fish odor syndrome" trait inherit that trait?
a. If each parent were a silent carrier of the "fish odor syndrome," then their offspring would have a 25% chance of having the syndrome. b. The "fish odor syndrome" trait is inherited extra-genetically. c. If each parent were a silent carrier of the "fish odor syndrome," then their offspring would have a 100% chance of having the syndrome. d. If each parent were a silent carrier of the "fish odor syndrome," then their offspring would have a 50% chance of having the syndrome. e. Under the circumstances outlined above, the "fish odor syndrome" cannot be inherited.
The major cation responsible for regulating actin-myosin contraction is
a. Ca2+. b. H+. c. K+. d. Na+.