The role of transfer RNA (tRNA) is to match a codon (3 bases) in mRNA sequence to: A. An amino acid B. A peptide bond C. An R group D. A start codon
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The role of transfer RNA (tRNA) is to match a codon (3 bases) in mRNA sequence to:
| A. |
An amino acid |
|
| B. |
A peptide bond |
|
| C. |
An R group |
|
| D. |
A start codon |
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Solved in 4 steps with 1 images
- What is the genetic code? a. The relationship between a three-base codon sequence and an amino acid or the end of translation b. The entire base sequence of an mRNA molecule c. The entire sequence from the promoter to the terminator of a gene d. The binding of tRNA to mRNAWhich of the following best describes mRNA?Group of answer choices a) Complexes with ribosomal proteins to form ribosomes b) Transports amino acids to ribosomes during translation c) Provides the instructions for the amino acid sequence of a polypeptide d) Used for eukaryotic RNA processingWhich of the following best describes tRNA? a. Provides the instructions for the amino acid sequence of a polypeptide b. Complexes with ribosomal proteins to form ribosomes c. Used for eukaryotic RNA processing d. Transports amino acids to ribosomes during translation
- The ribosome is needed for translation of mRNA (a) because it has the enzyme for adding amino acids to the 5’ end of a tRNA (b) because the ribosomal RNA contains the codon which determines the sequence of amino acids in a protein (c) because it positions tRNA and mRNA so that correct pairing of codon and anti-codon can occur (d) because it has an enzyme that removes introns from mRNA (e) all of the aboveImagine that a mutation in a DNA molecule results in the codon CCU being changed to CCC. Both of these codons code for proline. The fact that more than one codon can code for the same amino acid is referred to as ___ a. the ambiguity of the genetic code b. the redundancy of the genetic code c. the randomness of the genetic code d. mutations in the genetic codeA ribozyme is a. a complex between RNA and a protein. b. an RNA that encodes a protein that functions as an enzyme. c. an RNA molecule with catalytic function. d. a protein that degrades RNA molecules.
- What is the role of transcription in the determination of the amino acid sequence of a polypeptide chain? A. It pairs anticodons and codons. B. It synthesizes an mRNA strand. C. It duplicates the information in DNA. D. It decodes the information from mRNA.The ribosome is needed for translation of mRNA (a) because it has the enzyme that forms peptide bonds between amino acids (b) because the ribosomal RNA contains the codon which determine the sequence of amino acids in a protein (c) because it contains the enzyme that links the amino acids and tRNA (d) because it has enzyme that removes introns from mRNA (e) all of the aboveFor what reasons is it important to know the structure of a protein? a) Because then you can fold the protein as you want b) Because it will be easier to predict its function then c) Because then you can clone it better d) Because then you can design medicines better
- The anticodon a. is present in the tRNA and complementary to the codon in mRNA b. is present in the mRNA and binds to the codon c. is present in the tRNA and complementary to the amino acid d. is responsible for charging the tRNAThe information a cell needs to function is found on the DNA molecule in the form of a. multiple combinations of unknown chemicals. b. RNA subgroups. c. a spiral helix. d. four bases and the order in which they appear.If you imagine a messenger RNA molecule in the cytoplasm of a cell, which of the following will likely affect how much protein is made by translation of this message? A. The presence of appropriate snRNPs. B. The length of the polyA tail. C. The strength of hydrogen bonds holding the mRNA to ribosomal RNA. D. The ability of the mRNA to pair with itself to form a helix-turn-helix structure.
