Restriction enzymes
1.are produced by human cells.
2.cleave RNA.
3.cleave DNA.
4.are man made.
5.were discovered in the 1940s.
3
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Human development ____
a. is complete at birth b. begins at puberty c. is complete at puberty d. occurs only during adult life e. begins at conception
The transgene that confers ________ to crops has escaped into the environment, appearing in wild plants and nonengineered crops
a. glyphosate tolerance b. increased yields c. the ability to produce the Bt protein d. drought resistance
The oldest fossils
a. demonstrate the widest distribution. b. represent the most highly evolved organisms. c. are found buried deeper in the ground than more modern forms. d. are found in Africa. e. are primitive marine vertebrates
A common first separation technique in 2D gels is isoelectric focusing. What property is isoelectric focusing taking advantage of?
A) size B) amino acid content C) the pH at which the overall charge is zero D) charge