Electron Microscopes

question 23

Multiple Choice

Electron microscopes:

• A)that are scanning have better resolution than those that are transmission
• B)are much more expensive and take up more space than light microscopes
• C)can use the same preparations of specimens that have been prepared for viewing with a light microscope
• D)have a resolving power approximately 10 times better than the best light microscope

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Definitions:

Enzyme-reactant Interaction

The specific process by which an enzyme binds to a reactant, or substrate, to catalyze a biochemical reaction.

Lock-and-key Mechanism

A model for enzyme-substrate interaction suggesting that the enzyme and substrate possess specific complementary geometric shapes that fit exactly into one another.

Codexis

A company specializing in the development of enzymes and biocatalytic processes for pharmaceutical and biofuel productions.

Commercial Process

A systematic sequence of activities designed to produce a product or service for the marketplace.