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Summary A level Biology Mind Maps

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These are mind maps for the entire Alevel Biology syllabus with the following topics: 1)Cell Biology 2)Molecular Biology 3)Genetics 4)Ecology 5)Evolution and Biodiversity 6)Human Physiology 7)Transcription and gene expression 8)Metabolism, cell respiration and photosynthesis (AHL) 9)Plant biology (AHL) 10)Genetics and evolution (AHL) 11)Animal physiology (AHL) 12)Neurobiology and behaviour 14)Biotechnology and bioinformatics

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Module
Biology

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Mind maps Topic 1
Chlorella/Scenedesmus [A] Paramecium [A]
Striated muscle/giant Stargardt’s
Plants Animals algae/aseptate fungal disease [A]
Nutrition, metabolism, hyphae [NoS][A]
growth, response, excretion, Advantages? Used to treat Expression of
homeostasis and Unicellular Therapeutic
uses some genes
reproduction Ethics [NoS]
Multicellular Develop not others
All living organisms are from
Evidence? Endosymbiont Stem cells
theory composed of cells To enable Differentiation
Life processes
larger
Pasteur experiment organisms
Cell theory Develop into
[A][NoS] Surface area: specialised
Why are cells
Origin of cells the size they volume issues tissue
Cells come 1. Cell biology are?
from pre-




Practical 1 [S]
Origin of Magnification
existing cells
molecules of life Calculation
Cell division Drawing cells and tissues
Actual size of structures
Mitotic index [S] Stages of mitosis [S] Cell wall: murein
How see internal structure? [NoS]
Draw Binary fission [A]
Controlled by
Used when studying ultrastructure [S] Eukaryotes Prokaryotes Draw ultrastructure [S]

80S ribosomes 70S ribosomes
Oncogenes Correlation Cyclins [NoS] Cell wall Cytoplasm Nucleoid
with Mitochondria (plants/ Singer–Nicolson vs Davson–Danielli [S][NoS]
smoking [A] Pili; flagella
fungi)
Cancer Nucleus




Expt. method [NoS]
Draw fluid




Practical 2 [S]
Affect Cytoplasm Models Diffusion
mosaic [S]
Other membrane-bound organelles
Osmosis
Metastasis Controls
Mutagens Contains cholesterol [A] Cell membrane Structure/ entry/exit Facilitated diffusion
function
from cell Active transport
Identify organelles and deduce function
of specialised cells [A][S]
Sodium/potassium pumps [A] Osmolarity of tissues [A][S] Endo/exocytosis

Biology for the IB Diploma Study and Revision Guide © Andrew Davis 2017

, Mind maps Topic 2
Polar Hydrogen bonds form Solvent Transport in blood plasma Glucose, amino acids,
2. Molecular biology Water molecule properties of selected molecules [A] cholesterol, fats, oxygen, NaCl
between water
molecules [NoS]
Covalent bonding Coolant Sweat [A]
Cohesion Adhesion Thermal properties Water vs
Molecules to metabolism




isomers
Cis/trans
Carbon basis of life methane [A] Polyunsaturated
Carbohydrates and lipids Lipids in
diets Saturated Monounsaturated
Metabolism Production Drawing
= web of all of urea [NoS][A] 3 fatty acids + glycerol
glucose, ribose, Monosaccharide Disaccharide
enzyme-catalysed [A][NoS] Fatty acids Triglyceride
saturated fatty Condensation
reactions acid, amino acid Glycogen




Visualisation [S]
Structure/function [A]
[S]; identification Sucrose Lactose Maltose pH
Cellulose Body mass Temperature
Anabolism Catabolism from molecular index [S]
Starch Polysaccharide Proteome =
diagrams [S]
Rubisco; insulin; Denaturation [A] entire set of
Condensation Hydrolysis Amylose proteins expressed
immunoglobulin; Range of
Energy storage rhodopsin; by the genome
Macromolecules Macromolecules Amylopectin value of lipids vs functions of the individual
collagen; spider
from monomers into monomers carbohydrates [A] organism
silk [A]
Formation of
Universality [A]
replication [NoS][S]
Semi-conservative




PCR [A] 1 or
Proteins Amino acids Polypeptides Protein peptide bond [S]
Photosynthesis Respiration more =
Practical 3
20




Experiments [NoS][S]
Limiting mRNA codons [S] Coded by Synthesised
Enzymes Temperature
action spectrum [S]
Absorption spectrum;




factors Anaerobic on ribosomes

DNA Active pH
Yeast [A] Model: Structure of Molecular Denaturation
Temperature proteins in different motion/ site
ATP Crick and Substrate
Carbon dioxide Humans [A] organisms [NoS] collisions concentration
Watson
Light intensity Transcription Industrial applications
[NoS][A]
Aerobic Structure: double Sketch graphs
helix/strands/hydrogen bonds Lactose-free milk [A] of activity
Effect of limiting factors Translation
[S][NoS]; chromatograph Changes to DNA; RNA Polymers
Respiration rates; Nucleotides Drawings [S] Immobilisation of lactase
[S] (Practical 4) Earth [A] (differences?) of
respirometers [S][NoS]

Biology for the IB Diploma Study and Revision Guide © Andrew Davis and C. J. Clegg 2017

, Mind maps Topic 3
Sickle cell anaemia [A] Alleles – different forms Locus – a gene occupies a specific Human Genome Project Number of genes in humans
of the same gene position on a chromosome compared to other species
Caused by [A]

Mutation Genome – the whole of the genetic Comparison between
information of an organism different species [A] Gene sequencers: used for
Identify the locus of a human gene
and its polypeptide product [A]
Genes the sequencing of genes
[NoS]
Differences in the base sequence of a
Contain gene in two species [S]
Autoradiography: used to Inheritance of cystic fibrosis and
establish the length of DNA Number of chromosomes is Huntington’s disease [A]; use of
molecules in chromosomes [NoS]; a characteristic feature of pedigree charts [S]
Chorionic villus
Cairns’ technique [A] members of a species [A] A heritable factor that
sampling;
consists of a length of DNA
amniocentesis [A] Predicting the outcome of
Sex and influences a specific
Prokaryote vs eukaryote Chromosomes chromosomes characteristic monohybrid crosses
Karyogram/ (Punnett squares) [S]
karyotype
3. Genetics Homologous chromosomes: Inheritance
Mendel’s principles of
inheritance [NoS] Blood groups [A]
carry the same sequence of
genes but not necessarily the Down syndrome [A]
Discovered by Sex
same alleles of those genes Genetic Role of radiation and Hiroshima; Chernobyl [A]
microscope linkage diseases mutagenic chemicals
examination of Haploid: one [A]
dividing germ- chromosome of DNA profiling
Diploid: pairs of homologous Genetic modification [A][S]
line cells [NoS] chromosomes each pair
& biotechnology
Gametes are haploid
so contain only one PCR
Diploid → haploid Non-disjunction [A] Gel electrophoresis
Meiosis allele of each gene
Genetic modification
Variation Allows for fertilisation Somatic cell [NoS]
Age of parents [A] Cloning
Fertilised cells: alleles nuclear transfer
DNA replicated Gene transfer
Random may be homozygous [A] Crops [A]
in interphase 1 → 4 cells Crossing over to bacteria [A]
assortment or heterozygous
Drawing diagrams to show the stages of meiosis Experiment design: Risks to monarch
resulting in the formation of four haploid cells [S] Co-dominant Dominant Recessive stem cuttings [S] butterflies of Bt crops [S]


Biology for the IB Diploma Study and Revision Guide © Andrew Davis and C. J. Clegg 2017

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2021/2022
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