The most distinctive characteristic of leaf mesophyll cells is that they are filled with
A. central vacuoles.
B. many chloroplasts.
C. oxygen bubbles.
D. veins.
E. stomata.
B. many chloroplasts.
Since leaves are the main photosynthetic organ of a plant, the mesophyll cells within a leaf are filled with chloroplasts. The chloroplasts function to capture sunlight energy and convert it into chemical energy. Please read section 36.5 for more information about leaves and mesophyll cells.
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Auxin has an effect on plant embryos much like the Bicoid protein in Drosophila. If auxin were added to a culture of embryonic root cells, what would be the likely result?
A) Root cells would elongate and mature. B) Root cells would change into meristem cells. C) Root cells would halt their development. D) Root cells would not respond to auxin.
Because it is an enclosed compartment of fluid under pressure, the coelom can serve as a
_____, which shapes the body of soft animals. a. food vessel b. pressure balloon c. hydrostatic skeleton d. cartilaginous skeleton e. storage compartment
Which sequences of eukaryotic genes code for proteins?
A) exons B) introns C) invariant D) the spliceosome
A coenzyme of oxidation-reduction that becomes FADH2 as oxidation of substrates occurs in the mitochondria during cellular respiration, FAD then delivers electrons to the electron transport chain.
What will be an ideal response?