Preferred typed anwer :) (It is hard to understand hand writing.. )
1. List the three types of RNA and briefly describe their functions in protein synthesis.
2. In what structural ways are RNA and DNA similar? In what ways are they different?
Solution
Answer:
1. mRNA: mRNA is transcribed from a DNA template, and carries coding information to the
sites of protein synthesis, the ribosomes. Here, the nucleic acid polymer is translated into a
polymer of amino acids, a protein.
tRNA: help decode the mRNA sequence. They transfer a specific amino acid to a growing
polypeptide chain at the ribosomal site of protein synthesis during translation.
rRNA: associates with a set of proteins to form ribosomes. They provide a mechanism for
decoding mRNA into amino acids and to interact with the tRNAs during translation by providing
peptidyl transferase activity. Basically acts as a coordinator for the actions of mRNA and tRNA.
2. Similarities between DNA and RNA:
a. They both carry genetic information.
b. They both consist of a sugar, nucleotide and a phosphate.
c. They both are involved in protein synthesizing process.
Difference:
a. DNA is double stranded and RNA is single stranded.
b. RNA has ribose whereas DNA has deoxy ribose.
c. DNA is only found in the nuclues whereas RNA can be found both within and outside the
nucleus.
d. DNA contains the nucleotide thymine while RNA contains uracil instead of thymine.
e. DNA is much longer than RNA..
Preferred typed anwer ) (It is hard to understand hand writing.. ).pdf
1. Preferred typed anwer :) (It is hard to understand hand writing.. )
1. List the three types of RNA and briefly describe their functions in protein synthesis.
2. In what structural ways are RNA and DNA similar? In what ways are they different?
Solution
Answer:
1. mRNA: mRNA is transcribed from a DNA template, and carries coding information to the
sites of protein synthesis, the ribosomes. Here, the nucleic acid polymer is translated into a
polymer of amino acids, a protein.
tRNA: help decode the mRNA sequence. They transfer a specific amino acid to a growing
polypeptide chain at the ribosomal site of protein synthesis during translation.
rRNA: associates with a set of proteins to form ribosomes. They provide a mechanism for
decoding mRNA into amino acids and to interact with the tRNAs during translation by providing
peptidyl transferase activity. Basically acts as a coordinator for the actions of mRNA and tRNA.
2. Similarities between DNA and RNA:
a. They both carry genetic information.
b. They both consist of a sugar, nucleotide and a phosphate.
c. They both are involved in protein synthesizing process.
Difference:
a. DNA is double stranded and RNA is single stranded.
b. RNA has ribose whereas DNA has deoxy ribose.
c. DNA is only found in the nuclues whereas RNA can be found both within and outside the
nucleus.
d. DNA contains the nucleotide thymine while RNA contains uracil instead of thymine.
e. DNA is much longer than RNA.
