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- 1. Multiple Choice
What is the primary function of DNA in cells?
To control the cell's metabolism
To store genetic information
To regulate the cell's size and shape
To produce proteins
- 2. Multiple Choice
What is the difference between introns and exons?
Introns code for proteins, while exons do not
Exons are non-coding sequences, while introns contain genetic information
Introns are removed from the pre-mRNA, while exons are spliced together to form the mature mRNA
Exons are found only in eukaryotic DNA, while introns are found only in prokaryotic DNA
- 3. Multiple Choice
Which of the following is NOT a characteristic of introns?
They are transcribed into pre-mRNA
They are spliced out during RNA processing
They contain genetic information
They code for proteins
- 4. Multiple Choice
What is splicing?
The process of synthesizing mRNA from DNA
The process of removing introns and splicing exons together to form mature mRNA
The process of translating mRNA into protein
The process of copying DNA into RNA
- 5. Multiple Choice
What is the function of mature mRNA?
To store genetic information
To code for proteins
To regulate gene expression
To transcribe introns
- 6. Multiple Choice
What is the purpose of alternative splicing?
To increase the number of genes in an organism's genome
To increase the diversity of proteins that can be produced from a single gene
To eliminate introns from the pre-mRNA
To prevent the translation of mRNA into protein
- 7. Multiple Choice
Which of the following is an example of alternative splicing?
The production of a single mRNA from a gene with no introns
The production of different proteins from a single gene through the use of different start codons
The production of different proteins from a single gene through the use of different combinations of exons
The production of a protein that is shorter than expected due to the presence of a premature stop codon
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