B13.5 - DNA Structure and Protein Synthesis - 9-1 AQA Biology

Enter the correct key term/answer to the explanation/question
Enter the correct key term/answer to the explanation/question
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Last updated: July 13, 2017
First submittedJuly 13, 2017
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Average score33.3%
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Definition/Question
Key Term/Answer
DNA strands are polymers made up of lots of repeating units called ...
Nucleotides
Each nucleotide consists of one sugar molecule, one phosphate molecule and one ...
Base
The sugar and phosphate molecules in the nucleotides form a __ to the DNA strands.
Backbone
The sugar and phosphate molecules ...
Alternate
One of four different bases _, _, _ or _ - joins to each sugar.
A,T,C,G
A pairs always link up with ...
T
C always pairs up with ...
G
The pairing up of A,T,C or G is called ...
Complimentary Base Pairing
Each amino acid is coded for by a sequence of ____ bases in the gene.
3
Definition/Question
Key Term/Answer
The order of bases in a ____ decides the order of amino acids in a protein.
Gene
The parts of a gene that don't code for proteins are non-coding parts which switch the genes on or off, so they control whether or not a gene is used to make a protein (_________).
Expressed
Proteins aer made in the cell cytoplasm on tiny structures called ...
Ribosomes
The cell gets the code from the DNA to the ribosome by using a molecule called ...
mRNA
The correct amino acids are brought to the ribosomes in teh correct order by ...
Carrier Molecules
When a chain of amino acids has been assembled, if folds into a unique shape which allows the _______ to perform the task it's meant to do.
Protein
Acts as biological catalysts to speed up chemical reactions in the body.
Enzyme
Used to carry messages around the body. E.g. Insulin
Hormones
Are physically strong. E.g. Collagen
Physical Proteins
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