List the three (3) types of RNA molecules and in one sentence each describe their functions.
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List the three (3) types of RNA molecules and in one sentence each describe their functions.
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- A certain mRNA strand has the following nucleotide sequence: 5AUGACGUAUAACUUU3 What is the anticodon for each codon? What is the amino acid sequence of the polypeptide? (Use Figure 13-5 to help answer this question.) Figure 13-5 The genetic code The genetic code specifies all possible combinations of the three bases that compose codons in mRNA. Of the 64 possible codons, 61 specify amino acids (see Figure 3-17 for an explanation of abbreviations). The codon AUG specifies the amino acid methionine and also signals the ribosome to initiate translation (start). Three codonsUAA, UGA, and UAGdo not specify amino acids; they terminate polypeptide synthesis (stop).RNA differs from DNA in that the base _______________ is substituted for _______________. (a) adenine; uracil (b) uracil; thymine (c) guanine; uracil (d) cytosine; guanine (e) guanine; adenineWhich of the following does cytosine pair with? a. guanine b. thymine c. adenine d. a pyrimidine
- RNA has many functions in a cell. Besides mRNA, which carries information from the genome to the translation machinery, and rRNA, which is part of ribosomes and catalyzes the formation of peptide bonds, name three other types of RNA and describe the function of each.An mRNA molecule codifies only one type of protein?Describe the structure of an RNA nucleotide while pointing out the various differences between RNA and DNA (structural and functional differences).