Messenger RNA (mRNA) Worksheet
A Grade 12 Biology worksheet covering the structure, function, and processing of Messenger RNA (mRNA).
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Messenger RNA (mRNA) Worksheet
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Read each question carefully and answer to the best of your ability. This worksheet assesses your understanding of Messenger RNA (mRNA) structure, function, and processing in gene expression.
1. Which of the following best describes the primary function of mRNA?
Carrying amino acids to the ribosome
Forming the structural component of ribosomes
Carrying genetic information from DNA to the ribosome
Catalyzing biochemical reactions
2. The 5' cap on an mRNA molecule is primarily involved in:
Protecting mRNA from degradation
Initiating translation by binding to the ribosome
Facilitating mRNA splicing
Both a and b
1. Eukaryotic mRNA undergoes splicing to remove introns before translation.
True
False
2. The poly-A tail is added to the 3' end of mRNA and aids in its stability.
True
False
1. Transcription is the process where genetic information from DNA is used to synthesize .
2. In prokaryotes, mRNA translation can begin even before transcription is complete, a process known as .
3. The coding regions of an mRNA molecule are called , while the non-coding regions are called .
1. Briefly explain the role of mRNA in the central dogma of molecular biology.
2. Describe the three main modifications that a pre-mRNA molecule undergoes in eukaryotes before it becomes mature mRNA.
Match each term with its correct description.
1. Codon
a. The enzyme responsible for synthesizing RNA from a DNA template.
2. RNA Polymerase
b. A three-nucleotide sequence on mRNA that specifies a particular amino acid.
3. Spliceosome
c. A complex of RNA and protein that removes introns from pre-mRNA.