Multiple Choice
In the context of organic chemistry, what is the process called when a pine tree seed begins to grow into a new tree?
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1. A Review of General Chemistry
Intro to Organic Chemistry
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In 1990, Carl Woese proposed a new classification system for organisms. What was unique about his system?
A
It eliminated the use of kingdoms in biological classification.
B
It was based on the nutritional habits of organisms.
C
It introduced the concept of domains, dividing life into three major groups.
D
It classified organisms based solely on their physical characteristics.
Verified step by step guidance1
Identify the key contribution of Carl Woese to biological classification, which is the introduction of the concept of domains.
Understand that Woese's system divided life into three major groups, known as domains: Bacteria, Archaea, and Eukarya.
Recognize that this system was unique because it was based on genetic and molecular analysis, particularly ribosomal RNA sequences, rather than traditional methods like physical characteristics or nutritional habits.
Note that Woese's classification system did not eliminate the use of kingdoms but rather introduced a higher taxonomic rank above kingdoms.
Appreciate the impact of Woese's work in providing a more accurate reflection of the evolutionary relationships among organisms.
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