Table 82
Codons in MRNA Molecule and Their Corresponding Amino Acids

question 15

Multiple Choice

Table 8.2
Codons in mRNA molecule and their corresponding amino acids
$$\begin{array} { | c | c | c | c | } \hline \text { UUU } & \text { Phenylalanine } & \text { UAU } & \text { tyrosine } \\\hline \text { UUA } & \text { leucine } & \text { UAA } & \text { nonsense } \\\hline \text { GCA } & \text { alanine } & \text { AAU } & \text { asparagine } \\\hline \text { AAG } & \text { lysine } & \text { UGC } & \text { cysteine } \\\hline \text { GUU } & \text { valine } & \text { UCG, UCU } & \text { serine } \\\hline\end{array}$$




-Refer to Table 8.2.When amino acid sequences from a cell cycle control protein from a patient with cancer and a healthy person are aligned,the sequence from the cancer patient indicates one amino acid has changed from phenylalanine (Phe) to leucine (Leu) .A mutation in the cancer patient's DNA must have taken place.Identify the result of this DNA change in the mRNA codon that led to this change in the protein sequence.

• A)UUU altered to UCU
• B)UUU altered to UAU
• C)UCU altered to UUA
• D)CAA altered to UUU
• E)UUU altered to UUA

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Definitions:

Acoustically

Pertaining to the properties of sound or the science of sound, including its production, transmission, and effects.

Short-Term Memory

A capacity for holding a small amount of information in conscious awareness for a brief period of time.

Sensory Memory

The immediate, very brief recording of sensory information in the memory system.

Memory Span

The amount of information or number of items one can hold in short-term memory at one time.