Which of the Following Statements About the TRNA That Normally

question 43

Multiple Choice

Which of the following statements about the tRNA that normally accepts phenylalanine is false? (mRNA codons for phenylalanine are UUU and UUC. )

• A)It interacts specifically with the Phe synthetase.
• B)It will accept only the amino acid phenylalanine.
• C)Its molecular weight is about 25,000.
• D)Phenylalanine can be specifically attached to an -OH group at the 3' end.
• E)The tRNA must contain the sequence UUU.

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Definitions:

Chemical Weathering

Chemical reactions that affect a rock or other material by breaking down minerals and removing soluble material from the rock.

Physical Weathering

The physical breaking or disintegration of rocks when exposed to the environment.

Sedimentary Environments

Areas where sediment is deposited on the Earth's surface, including lakes, rivers, deserts, and marine settings, each of which leaves distinct geological records.

Topography

The arrangement of the natural and artificial physical features of an area, including its relief, and any landforms and bodies of water.