The Concept That Each Cell of an Organism Maintains Homeostasis

question 73

Multiple Choice

The concept that each cell of an organism maintains homeostasis is part of our understanding of

• A) cell theory.
• B) Darwinian theory.
• C) the cell cycle.
• D) mitotic theory.
• E) the theory of differentiation.

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Definitions:

Peptidoglycan

A complex polymer found in the cell walls of bacteria that provides structural support and protection.

Gram-positive

Refers to bacteria that retain the crystal violet dye used in Gram staining, indicating a thick peptidoglycan layer in their cell walls.

Gram-negative

Bacteria characterized by a thin layer of peptidoglycan in their cell wall, covered by an outer membrane containing lipopolysaccharides; stains pink in Gram staining.

Cyanobacteria

Photosynthetic microorganisms, also known as blue-green algae, that are key players in nitrogen fixation and oxygen production in various ecosystems.