Shown below is a codon in an mRNA. What is the correct sequence of the tRNA anticodon that recognizes this codon? mRNA codon 5' CAG 3' tRNA anticodon = ?

Use this mRNA coding sequence as your starting point. This sequence begins with a start codon and ends with a stop codon, so it is only looking at the region of DNA that directly encodes a protein sequence. 5’-AUGCACAAAUUAGAGUACCCCCCAGGAAGGUAG-3’ Make the following mutation in this sequence by changing/adding/removing only one nucleotide. Make the mutation easy to see (a different color, circled, something like that) 1) A silent mutation that is also a transition

The following diagram illustrates a step in the process of translation. Identify the following elements on the diagram. a. Start codon

A series of tRNAs have the following anticodons. Consider the wobble rules listed in Table  and give all possible codons with which each tRNA can pair. Q. 5′ –CAG–3′

The following diagram illustrates a step in the process of translation. Identify the following elements on the diagram. a. Stop codon

Indicate the amino acid sequence of the protein encoded by the following mRNA molecule.  Use the genetic code table and assume that the very first “AUG” the ribosome encounters will serve as the start codon and specify methionine. 5’-AAUUCAUGCCCAAAUUUGGGGCACGAAGCUUCUUAGGCUAGUCCUAAAAAA-3’

A mRNA sequence is shown below.  Note that the coding strand of DNA has the same sequence as the mRNA, except that there are U’s in the mRNA where there are T’s in the DNA.  The first triplet of nucleotides AAU (underlined) is in frame for coding, and encodes Asparagine.      45              50              55               60             65              5’—A A C G A A U C G U C G C C A A C U A A G A G  –-3’     Which of the following DNA mutations is almost certain to result in a shorter than normal protein?         at position 56 a change from G to C     an insertion of a G after the G at position 56     inversion of region 56-59 (G C C A)     an delete the C at position 52     None of the above.

TRNAS are 'charged' or activated by aminoacyl TRNA synthetases. Select the correct statements regarding this process. The process is dependent on interactions between ribosomes and aminoacyl TRNA synthetases. The aminoacid is added to the D-loop of the tRNA. Aminoacyl TRNA synthetases are pre-associated with tRNAS. The amino acid is attached to the terminal to the 3' hydroxyl of an adenine in the acceptor arm. The process requires an aminoacyl-adenylate intermadiate. QUESTION 19 Select the correct statements regarding myosin-mediated contraction the sarcomere. O Ca2+ is required for the binding of myosin to f-actin. Myosin and f-actin are randomly distributed in the sarcomere. Physical pulling of the actin microfilament requires three distinct conformation changes on myosin that involve ATP binding, ATP hydrolysis and sequential release of inorganic phosphate and ADP. Myosin-mediated contracted is ubiquitous across all cell types. O O O O