A student drops his notes, and his papers scatter. The fact that the papers scatter and do not remain neatly stacked is an illustration of
A) the first law of thermodynamics.
B) the second law of thermodynamics.
C) an increase in entropy.
D) both choices A and B
E) both choices B and C
E) both choices B and C
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A barophile would grow best in ________.
A. hot geyser springs B. deep oceans C. acid pools D. arid, desert soil E. salt lakes
People at greatest risk for pneumococcal infections include all the following except
A. those with underlying lung disease and viral infections. B. adolescents and young adults. C. patients without a spleen. D. young infants. E. the elderly.
Isoelectric focusing ________.
A. directly reveals the identity of unknown proteins in a complex mixture B. focuses the data gathered onto a specific protein or ORF C. separates proteins based on their size and shape D. separates proteins based on the pH at which they are electrically neutral
Which of the following is incorrect about the polymerase chain reaction?
A. It cannot be used on very old samples of tissue or blood. B. It makes identical copies of the DNA molecule to be amplified. C. It can be used to identify the owner of a single hair. D. It uses a heat stable DNA polymerase. E. It is an amplification process.