This is the more technical term used by scientists to describe the carrier DNA molecule used when cloning genes.
A. plasmid
B. vector
C. plastic
D. restriction fragment
B. vector
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Genes that modify the expression of other genes show:
A. dominance. B. incomplete dominance. C. recessiveness. D. blending inheritance. E. epistasis.
Which term best describes the movement of NH4+ ions into a cell down an electrochemical gradient?
a. a symport b. passive diffusion c. facilitated diffusion d. active transport
The hypothesis that RNA served as the genetic information of early life is called _________________.
A. ribozyme evolution hypothesis B. RNA world hypothesis C. central dogma of molecular biology D. hydrothermal synthesis E. DNA transcription hypothesis
What can you conclude from data in the figure?
A) The lipase from bacteria X is insensitive to changes in pH. B) Only the lipase from bacteria Y denatures at high temperatures. C) Bacteria X likely lives in an environment that undergoes large changes in temperature. D) The lipase from bacteria Y is more active than the lipase from bacteria X at 20°C.