The process of gene expression involves
A - VCE - SSCE Biology - Question 17 - 2009 - Paper 1
Question 17
The process of gene expression involves
A. translation followed by transcription.
B. exons carrying information required for protein synthesis.
C. identical action i... show full transcript
Worked Solution & Example Answer:The process of gene expression involves
A - VCE - SSCE Biology - Question 17 - 2009 - Paper 1
Step 1
A. translation followed by transcription.
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Answer
This statement is incorrect. The process of gene expression begins with transcription, where the DNA is transcribed to messenger RNA (mRNA), followed by translation where mRNA is translated to form proteins.
Step 2
B. exons carrying information required for protein synthesis.
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Answer
This statement is correct. Exons are the coding sequences in a gene that contain the information needed for synthesizing proteins, while introns are the non-coding sequences that are removed during RNA processing.
Step 3
C. identical action in every cell of the organism containing the particular gene.
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Answer
This statement is misleading. While all cells contain the same genetic information, not all cells express genes identically. Different cells may express different genes depending on various factors like cell type and environment.
Step 4
D. tRNA molecules, each carrying four nucleotides that specify one amino acid.
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Answer
This statement is incorrect. tRNA molecules carry amino acids to the ribosome during translation; however, each tRNA anticodon pairs with a three-nucleotide codon on mRNA, not four nucleotides.
