Internationally, the use of ricin as a weapon is banned in most countries according to the ____
a. Madrid protocol
b. Paris protocol
c. Kyoto protocol
d. Geneva protocol
e. Vienna protocol
ANSWER: d
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Tubular secretion regulates how much ___ is
secreted into the urine.
a. bicarbonate ion b. hydrogen ion c. glucose d. amino acid e. salt
While examining her patient's nose, Dr. Carlita Gonzales, an allergy specialist, noted a hole in the partition between the nasal cavities. The doctor suspects her patient is snorting which drug?
A) alcohol B) marijuana C) mescaline D) cocaine
Which of the following can add an additional 2,900 ml of air to the lungs?
A. expiratory reserve volume B. tidal volume C. residual volume D. inspiratory reserve volume E. vital capacity
Often students are surprised after performing this exercise at the fact that the bacterial pellet was quite small, and yet they were able to see the DNA without the aid of magnification. Which of the following choices provides a good explanation as to why the amount of DNA may seem large?
A) In this procedure the DNA is replicated B) While in cells DNA is extremely compact within the double helix (supercoiled), the DNA isolated in this protocol is no longer compact C) DNA swells after it has been extracted from bacterial cells