Technician a Says That on Some Engines, Guide Seals Have

question 11

Multiple Choice

Technician A says that on some engines, guide seals have to be installed on exhaust valves only. Technician B says that even though two valve guide seals might look alike, one could be made of a rubber that will survive longer under higher temperature. Who is right?

• A)Technician A only
• B)Technician B only
• C)Both A and B
• D)Neither A nor B

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Definitions:

Pyruvate

A key intermediate in several metabolic pathways, especially glycolysis, where glucose is broken down to produce energy.

Cellular Respiration

The process by which cells convert glucose and oxygen into energy, carbon dioxide, and water.

Electron Transport System

a series of complexes that transfer electrons from electron donors to electron acceptors via redox reactions, coupled with the transfer of protons across a membrane.

Photosynthesis

The process by which green plants and certain other organisms transform light energy into chemical energy, using carbon dioxide and water to produce glucose and oxygen.