Cell Division and DNA - created from Mind Map

Cell Structure and Functions Unicelllular - One celled Multicellular= More than 1 cell Nucleus - Control centre. Contains DNA. Reproduces cells Cell Membrane - boundary around cell. control exit and entry of substance Cytoplams - all contents in cell except nuclueus Ribosomes - small organelles, make proteins or structures Chloroplasts - contains chlorophyll, pigment to convert sun into food photosythesis Vacuole - Sacs to store nutrients, waste products and food Cell wall - tough outer to make plant stronger

Genetic Infomation DNA located in nucleus Genetic info stored in chemical -DNA Deoxyribonucleic Acid Shaped in a double helix nucleotides -subuntils of DNA Adenine Guanine Cytosine Thymine Sugar and phosphate backbone Nitrogen bond

Genes Chromosones and DNA Gene - Unit of inhertence sequence of nucleotides is a chemical code DNA molecule = a gene Thousands of genes wrapped up to make thread like structure - chromosone Come in 23 pairs with 22 the same and 23rd determines boy or girl

DNA Repilcation Mitosis - division of cell into 2 to reproduce cells copying of genetic infomation - DNA replication Daughter cells may have different genetic code if error happpens mutation- accidental changes to DNA or CHROMOSONE Mutation in body - cause death of one cell or may become cancerous in a gamate may kill egg or sperm or embryo

Cell theory All living things are made out of cells Cells are the basic units or building blocks of life Are cells that come from other cells

Functions of life To grow To reproduce Take in substances from their surroundings and assimilate respond excrete wast extract energy form food

Types of cellsCell>Tissue>organ>organ system

Cell Division and DNA