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

Biology & Microbiology

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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

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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

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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.

Biology & Microbiology

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

Biology & Microbiology