B2 Topic 1 The Components of Life This topic looks at: DNA in detail and how cells divide Genetic Issues Enzymes and conditions affecting them Draw, label and describe the function of the following cells: Animal Cell Plant Cell Bacteria Cell Organisms have adapted to live in extreme environments, what are two examples of these? 1. 2. What uses are there for genetic engineering? Keywords: Gene, chromosomes, undifferentiated plasmid, base pairs, Use diagrams to show the stages in genetic engineering STEM CELLS What are stem cells, how can they be used and where do we find them? What is the human genome project? What are the 4 bases in DNA and how do they pair up? Keywords: hydrogen bonds,

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

B2 Topic 1 The Components of Life This topic looks at: DNA in detail and how cells divide Genetic Issues Enzymes and conditions affecting them Protein Synthesis Describe what transcription and translation are use diagrams to aid you. Use the following key words 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= A A T G G C T T G A C T C T A mRNA = ____________________________ tRNA triplets: ______ ______ ______ ______ ______ Order of _____ ______ ______ ______ ______ amino acids: 2. DNA= T G G C T A G T A A A G C T T Keywords: Gene, chromosomes, undifferentiated plasmid, base pairs, How many base pairs make up an amino acid? How many amino acids are there? Keywords: hydrogen bonds,