A scientist develops a new medication that is a protein compound and that must be administered by injection. Which of the following would be the most effective and safest means of preparing a sterile solution of the new medication?
A. autoclaving
B. filtration
C. dilution with alcohol
D. lyophilization
E. ultraviolet irradiation
Answer: B
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The production of large quantities of a particular DNA sequence is known as gene ________.
Fill in the blank(s) with the appropriate word(s).
Which of the following is a true about the members of Kingdom Fungi?
A) All members are photosynthetic. B) Absorption of dissolved organic matter through cell wall. C) Absorption of dissolved inorganic matter. D) All members are microscopic. E) All members are macroscopic.
Matter composed of a single type of atom is an element.
Answer the following statement true (T) or false (F)
A neuropeptide that functions as a natural analgesic is _____
A) acetylcholine B) epinephrine C) endorphin D) nitric oxide E) gamma-aminobutyric acid (GABA)