Proteins separated on 2D gels provide information on their pH and size but not their identity. MALDI-mass spectrometry provides this missing information by which of the following?
A) generating sequence data for the protein
B) generating a m/z ratio "fingerprint" for the protein
C) generating a gene "fingerprint" for the protein
D) generating a sequence "fingerprint" for the protein
Answer: B
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The force driving simple diffusion is _____, while the energy source for active transport is _____
A) the concentration gradient; ADP B) the concentration gradient; ATP C) transmembrane pumps; electron transport D) phosphorylated protein carriers; ATP
How does the early development of the mouse differ from that of Caenorhabditis?
a. Embryonic mouse cells commit to their ultimate fate earlier than do the cells of Caenorhabditis. b. Early development of a mouse is regulative, while early development of Caenorhabditis is not. c. Mouse cells require higher concentrations of nutrients than do the cells of Caenorhabditis. d. Embryonic mouse cells differentiate much later than the cells of Caenorhabditis. e. Embryonic development in the mouse is controlled by transcription factors, while Caenorhabditis is not.
Reproductive isolation is the only requirement for speciation
Indicate whether the statement is true or false
Polar molecules are composed of covalently-bonded
A. ions. B. atoms of different electronegativity. C. identical atoms. D. atoms of identical electronegativity. E. carbon atoms.