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B2 Topic 1 The Components of Life CELL DIVISION There are 2 types of cell division. Draw the stages in each
Keywords: enculeated, daughter cell, parent cell, biological
one and state where they occur in the body
This topic looks at:
·DNA in detail and how cells divide MITOSIS
·Genetic Issues
·Enzymes and conditions affecting them
CLONING Use diagrams with explanations to show how cloning occurs.
MEIOSIS
What are enzymes? Sketch a graph to show how the 3 factors mentioned earlier affect how an
enzyme works.
What is a catalyst?
1. 2. 3.
Where are enzymes found?
What 3 things affect how an enzyme works?
Keywords: genetically identical, body cells, haploid, diploid…read more

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B2 Topic 1 The Components of Life Protein Synthesis
Keywords: Gene, chromosomes, undifferentiated plasmid, base pairs,
This topic looks at: Describe what transcription and translation are use diagrams to aid you. Use the
·DNA in detail and how cells divide following key words
·Genetic Issues
·Enzymes and conditions affecting them
Which base pairs match up in DNA?
Protein Synthesis
From the single strand of DNA, follow the steps to work out the sequence of amino
acids... DON'T FORGET THAT mRNA HAS A `U' INSTEAD OF `T'.
1. DNA= AATGGCTTGACTCTA
mRNA = ____________________________
tRNA triplets: ______ ______ ______ ______ ______
Order of _____ ______ ______ ______ ______
amino
acids:
2. DNA= TGGCTAGTAAAGCTT
mRNA = ____________________________
tRNA triplets: ______ ______ ______ ______ ______
Order of _____ ______ ______ ______ ______
amino How many base pairs make up an amino acid?
acids:
How many amino acids are there?
Keywords: hydrogen bonds,…read more

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