COGNITIVE ASSESSMENT What Method Is Used to Read a Bar

question 19

Multiple Choice

COGNITIVE ASSESSMENT What method is used to read a bar code?

• A) The magnetic bar codes are converted by a bar code reader into a form that a computer can process.
• B) A laser translates the bars on the bar code into digital signals that are stored in RAM.
• C) A laser scanner produces light beams that pass through a scanner filter which then translates the light patterns into digital patterns that can be interpreted by the CPU.
• D) A bar code reader uses laser beams to read bar codes.

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Definitions:

Substrate

In biochemistry, the reactant that an enzyme acts upon to catalyze a chemical reaction.

Pepsin

An enzyme in the stomach that breaks down proteins into smaller peptides, facilitating digestion.

Denature

A process in which proteins lose their native shape and functionality due to the disruption of non-covalent bonds, often caused by changes in pH, temperature, or chemical exposure.

pH

A scale used to specify the acidity or basicity of an aqueous solution, with values ranging from 0 to 14.