Proteins are made up of amino acids - Edexcel - GCSE Biology - Question 1 - 2013 - Paper 1
Question 1
Proteins are made up of amino acids.
(a) The table shows the DNA bases that code for some of the amino acids found in proteins.
DNA bases AAA AAC CAA TAC ... show full transcript
Worked Solution & Example Answer:Proteins are made up of amino acids - Edexcel - GCSE Biology - Question 1 - 2013 - Paper 1
Step 1
State the order of amino acids coded for by this sequence of DNA.
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Answer
The order of amino acids coded for by the sequence of DNA T A C C A A T T C is:
met (from TAC)
val (from CAA)
lys (from TTC)
Thus, the full sequence is: met, val, lys.
Step 2
These amino acids will be joined together during protein synthesis. During which stage of protein synthesis will this take place?
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Answer
The joining of these amino acids takes place during the translation stage of protein synthesis.
Step 3
Complete the sentence by putting a cross (✗) in the box next to your answer.
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Answer
Amino acids are joined together D at the ribosome.
