Ovules become seeds and ovaries become:
a. cones.
b. roots.
c. flowers.
d. shoots.
e. fruits.
Ans: e. fruits.
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The competitive exclusion principle states that _____
A) it is not possible for two species with the same niche to coexist in the same region B) it is not possible for two species to compete for the same resources C) two species with different niches will not compete for the same resources D) two species with the same niche will constantly be competing for resources
One of the unexpected findings to occur in comparing mouse and human genomes is
A. that "junk" DNA may be more functional than we assumed. B. how incredibly different they are. C. that there is far more "junk" DNA than we ever thought. D. how similar some gene families are to their original transposons.
A certain gene is transformed into a plant cell for potential use as a vaccine delivery system. Upon performing a Northern blot, a good deal of mRNA for the gene is produced. However, the protein product for the gene is not observed. One explanation may be that the
A) plant cell recognizes and degrades the protein in the cytoplasm. B) plant ribosomes are not recognizing the mRNA translational initiation sites. C) mRNA is not stable in the plant cytoplasm. D) all of the above E) none of the above
Botox is the marketed version of the botulism exotoxin, used to treat muscle spasms and for cosmetic purposes. Indicate whether the statement is true or false