Which of the Following Is Essential for Life and Is

question 29

Multiple Choice

Which of the following is essential for life and is the major component of blood?

• A)carbohydrates
• B)proteins
• C)fats
• D)water

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Definitions:

Electron Microscope

A microscope capable of producing high-resolution, highly magnified images through the use of an electron beam (rather than light). Transmission electron microscopes (TEMs) produce images of thin sections; scanning electron microscopes (SEMs) produce images of surfaces.

Actinomycetes

A group of Gram-positive bacteria known for their soil-dwelling habits and significant role in the decomposition of organic materials.

Peptidoglycan

A complex polymer found in the cell walls of most bacteria, providing structural strength and shape.

Waxy Cell Wall

A waxy cell wall is characteristic of plant cells and some microorganisms, providing a protective, waterproof layer.