Which Types of Molecules Can Serve as Informational Macromolecules in Cells

question 64

Multiple Choice

Which types of molecules can serve as informational macromolecules in cells?

• A) proteins
• B) nucleic acids
• C) oligosaccharides
• D) both proteins and nucleic acids
• E) proteins, nucleic acids, and oligosaccharides

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Definitions:

Urine Specific Gravity

A measure of the concentration or amount (total weight) of substances dissolved in urine.

Sterile Plastic

Plastic materials that have been treated to eliminate all forms of life and biological contaminants.

Clean-Catch Midstream

A method of urine collection that involves cleansing the genital area and collecting urine midstream to minimize contamination.

Urine Culture

A laboratory test in which urine is placed on a growth medium and bacteria are allowed to grow for 24 to 48 hours. Any large growths of bacteria are then identified. Urine cultures are often followed by a sensitivity or susceptibility test to determine which antibiotic will be most effective against the bacteria.