Pioneer plant species are usually characterized by ____
a. small size
b. high dispersal rates
c. slow maturation
d. high dispersal rates and high numbers of offspring
e. small size, efficient dispersal mechanisms, and slow maturation
ANSWER: d
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If the midbrain of a fish became damaged it would harm its ability to _____
A) swim B) see C) hear D) smell E) eat
In two dimensional gel electrophoresis, proteins are first treated with SDS, separated according to molecular mass, and then separated by their net charge at a specific pH
Indicate whether the statement is true or false
Introns and an exons are removed from Gene 1 and inserted into Gene 2. What could happen to the protein product of Gene 2 as a result of this insertion?
A. Nothing; Gene 2 retains all of its exons so the protein will be translated correctly and will be functional. B. Only the first segment of Gene 2 will be translated into a protein, therefore the protein will be nonfunctional. C. The protein product could be nonfunctional or provide a survival and reproductive advantage. D. Gene 2 gains an additional exon, therefore the protein will provide an additional survival and reproductive advantage.
One possible use of transgenic plants is in the production of human proteins, such as vaccines. Which of the following is a possible hindrance that must be overcome?
A) prevention of transmission of plant allergens to the vaccine recipients B) prevention of vaccine-containing plants being consumed by insects C) use of plant cells to translate non-plant-derived mRNA D) inability of the human digestive system to accept plant-derived protein