Is a fluorescent technique:
a) Kinyoun
b) Auramine-rhodamine
c) both
d) neither
Answer: b) Auramine-rhodamine
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A person with this lung disease experiences a loss of elastic tissue, which makes it hard to exhale
A) pneumonia B) tuberculosis C) emphysema D) influenza
Buffers
A. contain salts of weak acids or weak bases. B. release hydrogen ions when a base is added to the solution. C. keep hydrogen ion concentration and pH within a narrow range. D. include phosphate, protein, and bicarbonate systems. E. All of these are correct statements.
Before Mendel, people had observed inheritance of dominant and recessive traits by following many generations of plants and animals. What was different about Mendel's work?
A) He followed more generations than anyone else. B) His results were immediately accepted and applied to other studies. C) He used a plant that had never been cultivated before. D) He did both cross- and self-fertilizations. E) He kept careful count of his results, including mathematical analysis.
Although covalent bonds are 10–100 times stronger than noncovalent interactions, many biological processes depend upon the number and type of noncovalent interactions between molecules
Which of the noncovalent interactions below will contribute most to the strong and specific binding of two molecules, such as a pair of proteins? (a) electrostatic attractions (b) hydrogen bonds (c) hydrophobic interactions (d) Van der Waals attractions