Figure 10 represents a piece of DNA from a gene - VCE - SSCE Biology - Question 4 - 2002 - Paper 1
Question 4
Figure 10 represents a piece of DNA from a gene. The template strand for a section of the gene is shown.
part of the template strand
AAAGTACTGC
complementary strand... show full transcript
Worked Solution & Example Answer:Figure 10 represents a piece of DNA from a gene - VCE - SSCE Biology - Question 4 - 2002 - Paper 1
Step 1
In the space provided in Figure 10 write in the complementary bases for the other strand of DNA.
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Answer
The complementary strand of the DNA sequence would be
TTTCA GTACG C
This means that A pairs with T, G pairs with C, and vice versa.
Step 2
What does the A represent in this DNA sequence?
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Answer
The A in this DNA sequence represents adenine, which is one of the four nucleotide bases found in DNA.
Step 3
The first step in the process of gene expression is transcription. What is produced during transcription?
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Answer
During transcription, messenger RNA (mRNA) is produced from the DNA template. This mRNA carries the genetic information needed for protein synthesis.
Step 4
The compound produced during transcription attaches to an organelle in the cell.
What is the name of this organelle?
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The organelle to which the mRNA attaches is called the ribosome.
Step 5
What is the name of the step in gene expression which follows transcription and occurs at this organelle?
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The step in gene expression that follows transcription at the ribosome is called translation.
Step 6
What is produced during this process mentioned in part ii?
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Answer
During translation, a polypeptide or protein is produced as the ribosome reads the sequence of the mRNA.
