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Questions and Answers
What is the primary function of spliceosomes in the context of genetic code?
What is the primary function of spliceosomes in the context of genetic code?
- To remove exons from mRNA
- To synthesize proteins directly
- To code for amino acids
- To remove introns and join exons together (correct)
How many combinations of nucleotides can be formed using a triplet code with 4 different nucleotides?
How many combinations of nucleotides can be formed using a triplet code with 4 different nucleotides?
- 64 (correct)
- 16
- 80
- 32
What is the significance of having introns in DNA genes?
What is the significance of having introns in DNA genes?
- They allow for more than one type of protein to be made (correct)
- They limit the variety of proteins produced
- They are coding regions for proteins
- They are unnecessary and commonly deleted
What is the minimum number of nucleotides required to specify all 20 amino acids in the genetic code?
What is the minimum number of nucleotides required to specify all 20 amino acids in the genetic code?
Which statement best describes the genetic code?
Which statement best describes the genetic code?
Flashcards
Genetic Code
Genetic Code
A set of rules that tells the cell how to translate a gene's DNA sequence into a protein's amino acid sequence.
Exons
Exons
Coding regions of a gene that contain the instructions for making a protein.
Introns
Introns
Non-coding regions of a gene that are removed before the gene is translated into protein.
Spliceosome
Spliceosome
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Triplet Code
Triplet Code
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Study Notes
Genetic Code
- DNA contains coding (exons) and non-coding (introns) regions
- Introns are removed by spliceosomes, joining exons
- mRNA is formed from exons
- mRNA leaves the nucleus and is translated into protein
- The genetic code converts mRNA nucleotide sequences to amino acid sequences
- The code uses 4 nucleotides (A, C, G, T) to code for 20 amino acids
- The code is read in triplets (3 nucleotides)
- Each triplet codes for a specific amino acid
- There are 64 possible triplet combinations, enough to code for all 20 amino acids
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