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Problem 7 A) In how many cases in the genetic code would you fail to know...
Question 9: The genetic code is read in groups of three nucleotides, called codons, in mRNA that specifies for a particular amino acid. tRNA molecules act as the amino acid carriers that by correctly pairing with the codon on mRNA can deliver the correct amino acid to the ribosome during translation. At the tip of each tRNA molecule is a group of three nucleotides called an anticodon and at the other end is where the corresponding amino acid is attached...
How do I use the genetic code to determine the exact codon for an amino acid? (ex. how do I find the exact codon for Lys?)
Because the genetic code is nonoverlapping, a missense mutation (from a single nucleotide change) results in the alteration of ______________, and the resulting protein has ______________. a) only one codon / at least three amino acid changes b) three codons / a single amino acid change c) only one codon / a single amino acid change d) three codons / three amino acid changes
You are investigating a rare genetic brain disorder and would like to identify the gene responsible, clone it and determine its function. A very small protein isolated from the brains of healthy individuals who have the disease. The protein has a molecular weight of about 2700 Daltons. Assume that the molecular weight of a typical amino acid is 100 Daltons. How many amino acids do you expect the protein to be? How long, in nucleotides, would the corresponding mature mRNA...
Question 24 (1 point) In regard to the components of the genetic code, a "codon" is a a) polymeric molecule composed of nucleic acids. b) sequence of three nucleotides. c) phosphate group, a ribose sugar, and nitrogen. d) sequence of nucleotides that codes for a protein. Question 25 (1 point) Which one of the following statements concerning protein is not correct? a) Proteins are synthesized in the liver and by B-lymphocytes. b) Proteins are polymers of amino acids. c) An...
QUESTION 11 Meselson and Stahl had obtained the resuk below, what would have been there conclusion First Generation Replication Replication N4 14 NINIS NAS N15 DNA replication is conservative DNA replication is semi-conservative DNA replication is dispersive None of the above QUESTION 12 If one strand of DNA Is CGGTAC in the 5-3 direction, what is the corresponding complementary strand of DNA in the 53' direction? GCCTAG ©GTACG TAACGT GCCATG CATGGA QUESTION 13 Which of the following statements regarding the...
Question 2 (1 point) In order to target a protein to the endomembrane system, which of the following is required first? O a ER bound ribosome signal peptide on the N terminus of the polypeptide chaperone protein signal peptide on the C terminus of the polypeptide O signal-recognition particles A tRNA is chemically modified so that the amino acid bound is different than the one specified by its anticodon. Which codon in the mRNA would the tRNA recognize: the one...
The genetic code is read in groups of three (3) nucleotides called codons. Some mutations are silent because they have no effect on the phenotype. How is that possible? Since there was a mutation in one of the codons, that gene will not be expressed. o It is not possible, mutations are always expressed and always have an effect The mutation changed the codon but the new codon codes for the same amino acid The ribosome knows there was a...
Genetic code: 1. How many silent mutations can be made starting from the codon TGG? (2 points) A. O B. 1 C. 2 D. 3 Answer: 2. How many single base changes result in nonsense mutations for the codon TCA? (2 points) A. O B. 1 C. 2 D. 3 E. 4 Answer: 3. How many single base change missense mutations are possible for codon ATG resulting in how many different amino acids? (2 points) A. 3,3 B. 5, 3...
10) The codon UCA specifies the amino acid serine. a) How many single nucleotide substitutions in this codon could result in chain termination? b) How many single nucleotide substitutions in this codon would fail to change the amino acid?