Approximately How Long Have Pygmies Lived in the Forests of Africa

question 45

Multiple Choice

Approximately how long have pygmies lived in the forests of Africa?

• A) since they were driven from their plantations
• B) for hundreds of years
• C) since the British colonial period
• D) for many thousands of years

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Definitions:

Ribosome

A cellular organelle composed of RNA and proteins, found throughout the cytoplasm in cells, which is involved in decoding the mRNA to produce proteins.

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.