What Group of Organisms Is Thought to Responsible for Converting

question 36

Multiple Choice

What group of organisms is thought to responsible for converting about 500 trillion kg of CO₂ to carbohydrate each year?

• A)plant life
• B)phytoplankton
• C)fungi
• D)bacteria
• E)moss

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Definitions:

Nucleic Acid Bases

The parts of DNA and RNA molecules that carry genetic information, specifically adenine, thymine (in DNA), cytosine, guanine, and uracil (in RNA).

Three-Base Combinations

Sequences of three nucleotide bases in DNA or RNA, known as codons, which specify the addition of a specific amino acid to a growing polypeptide chain during protein synthesis.

mRNA Transcript

The single-stranded RNA molecule copied from one of the DNA strands of a gene, which is used as a template for protein synthesis in the ribosome.

Human XYZ Gene

This term does not correspond with standard genetic nomenclature or recognized genes, suggesting it may not be a real key term.