The Three- Domain System

question 53

Multiple Choice

The three- domain system

• A)subdivides the eukaryotes into two different domains.
• B)subdivides the prokaryotes into two different domains.
• C)no longer recognizes eukaryotes as a monophyletic group.
• D)separates plants,animals,and fungi into domains.

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Definitions:

Calvin-Benson Cycle

The Calvin-Benson cycle is a series of biochemical redox reactions that take place in the chloroplasts of photosynthetic organisms, used to fix carbon dioxide into organic compounds.

Thylakoid Membrane

A membrane-bound compartment inside chloroplasts and cyanobacteria, which contains chlorophyll and is the site of the light-dependent reactions of photosynthesis.

Stroma

The supportive tissue of an epithelial organ, tumor, gonad, etc., consisting of connective tissues and blood vessels, or the dense fluid found inside the chloroplasts of plant cells.

Thylakoid Compartment

The thylakoid compartment is a space within the chloroplasts of plant cells, surrounded by thylakoid membranes, where the light-dependent reactions of photosynthesis occur.