RNA molecules consist of long strands of joined nucleotides - VCE - SSCE Biology - Question 2 - 2020 - Paper 1
Question 2
RNA molecules consist of long strands of joined nucleotides. Each nucleotide consists of three sub-units.
Label the three sub-units on the diagram of the RNA nucleo... show full transcript
Worked Solution & Example Answer:RNA molecules consist of long strands of joined nucleotides - VCE - SSCE Biology - Question 2 - 2020 - Paper 1
Step 1
Label the three sub-units on the diagram of the RNA nucleotide below.
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Answer
The three sub-units of the RNA nucleotide are:
Phosphate: This is the group responsible for linking nucleotides together through phosphodiester bonds.
Ribose: This is the sugar component, which is a pentose sugar that serves as the backbone of the RNA structure.
Base: This refers to the nitrogenous base (adenine, uracil, cytosine, or guanine) that pairs with bases during the processes of transcription and translation.
Step 2
tRNA
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Answer
tRNA (transfer RNA) plays a crucial role in the translation process of protein synthesis.
It brings amino acids to the ribosome, matching them with the codons on the mRNA strand to ensure the correct sequence of amino acids in a protein.
Step 3
mRNA
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Answer
mRNA (messenger RNA) carries genetic information from the nucleus to the ribosomes.
It acts as a template for protein synthesis, where it directs the order of amino acids by providing codons that are matched by tRNA.
