IB SL Biology: Cells

Description

Mind Map on IB SL Biology: Cells, created by mcgowan-w-10 on 27/05/2014.
mcgowan-w-10
Mind Map by mcgowan-w-10, updated more than 1 year ago
mcgowan-w-10
Created by mcgowan-w-10 over 10 years ago
1000
38

Resource summary

IB SL Biology: Cells
  1. Cell Theory
    1. 1. All living organisms are composed of cells
      1. 2. Cells are the smallest unit of life
        1. 3. Cells come from pre-existing cells
      2. Proof
        1. One sealed soup container: no decay
          1. Other open soup container: decay
            1. Bacteria in air
          2. Multicellular organisms
            1. Differentiation
              1. Cells specialise in different functions
                1. Genes needed to specialise
                  1. Once specialised, cell is committed
              2. Exhibits emergent properties
                1. More than sum of parts - complex interations
              3. Unicellular
                1. Single cell = all functions of life
                  1. Amoeba
                    1. Euglena
                      1. Chlorella
                    2. Stem Cells
                      1. Retain ability to differentiate along different pathways
                        1. Small number of embryonic cells still retained by adult body
                          1. Potential for tissue repair
                            1. Cord blood for leukaemia
                              1. Skin grafts
                                1. Heart regeneration
                                  1. Therapeutic use: bone marrow transplant as a result of chemotherapy
                              2. Cell Size
                                1. SA:Vol ratio
                                  1. Smaller animals - poor
                                    1. Heat loss - big issue
                                    2. Bigger animals - good
                                      1. Lungs + gills
                                    3. Prokaryotic Cells
                                      1. "Before the nucleus"
                                        1. Cell Wall
                                          1. Prevents damage
                                            1. Retains structure
                                          2. Plasma Membrane
                                            1. Controls entry and exit of substances
                                            2. Cytoplasm
                                              1. Site of biochemical reactions
                                              2. Pili
                                                1. Hair-like structure
                                                  1. Connect bacteria together
                                                2. Flagella
                                                  1. Propels cells
                                                  2. Ribosomes
                                                    1. Synthesise proteins
                                                      1. Translation of messenger RNA
                                                        1. 70 S
                                                    2. Nucleoid
                                                      1. Naked DNA
                                                      2. Binary fission
                                                      3. Eukaryotic Cells
                                                        1. Nucleus
                                                          1. Stores genetic information
                                                            1. Chromosomes
                                                              1. Strands of DNA associated with protein
                                                                1. 4+
                                                          2. Mitochondria
                                                            1. Carry out aerobic respiration
                                                            2. Lysosome
                                                              1. Stores digestive enzymes
                                                              2. Rough endoplasmic reticulum
                                                                1. Synthesises proteins for secretion from cell
                                                                2. Golgi Apparatus
                                                                  1. Processes proteins before secretion
                                                                  2. Plasma Membrane
                                                                    1. Controls entry and exit of substances
                                                                    2. Free ribosomes
                                                                      1. Synthesise proteins for use in the cytoplasm
                                                                        1. 80 S
                                                                    Show full summary Hide full summary

                                                                    Similar

                                                                    BIOLOGY HL DEFINITIONS IB
                                                                    Luisa Mandacaru
                                                                    Biology AQA 3.1.3 Cells
                                                                    evie.daines
                                                                    Cell Transport
                                                                    Elena Cade
                                                                    Pathogens and Immunity
                                                                    Elena Cade
                                                                    AQA Biology 3.3 Structure of an epithelial cell
                                                                    Charlotte Hewson
                                                                    IB Biology Topic 4 Genetics (SL)
                                                                    R S
                                                                    Biology AQA 3.2.5 Mitosis
                                                                    evie.daines
                                                                    Cells and the Immune System
                                                                    Eleanor H
                                                                    Cells And Cell Techniques - Flashcards (AQA AS-Level Biology)
                                                                    Henry Kitchen
                                                                    AQA Biology 12.1 cellular organisation
                                                                    Charlotte Hewson
                                                                    Biology Unit 1a - GCSE - AQA
                                                                    RosettaStoneDecoded