Biology
- Created by: Orlanna Morris
- Created on: 14-04-13 15:47
View mindmap
- Biology
- Cells
- Animal
- Skin
- Plant
- Sperm
- Eggs
- Blood
- White
- Red
- Tissues, organs and organ systems
- Types of tissues
- Muscular tissue- Contracts and bringing about movement
- Glandular tissue- produces substances such as enzymes and hormones
- Epithelial tissue- covers some parts of the body
- Types of plant tissues
- Epidermal tissue- covers the plant
- Mesophyll- carries out photosynthesis
- xylem and phloem- transport of substances around plant
- Types of tissues
- Photosynthesis
- Gas needed - Carbon Dioxide
- Type of energy needed - Light
- Waste product photosynthesis produces is Oxygen
- Word equation - Carbon Dioxide + Water = Glucose + Oxygen
- Organisms and their environment
- Factors that affect organisms
- Temperature
- Amount of light
- Availability of water
- Availability of nutrients
- Availability of oxygen and carbon dioxide
- Environment- all the conditions that surround a living organism
- Habitat the place where an organism lives
- Population- all the members of a single species that live in a habitat
- Community- all the population of different species that live together in a habitat
- Ecosystem- a community and the habitat in which it lives
- Factors that affect organisms
- Proteins - their functions and uses
- Enzymes
- Protease ( AMINO ACIDS)
- Amylase (GLUCOSE)
- Lipase (FATTY ACIDS, GLYCEROL)
- Enzymes
- Respiration
- Aerobic - this uses oxyegen
- Anaerobic- Does NOT use oxygen
- Cloning
- 1. an egg a sperm.
- 2. zygote
- 3 take a nucleus from the embryo
- 4.Get any egg and throw away nucleus
- 5.Put nucleus and egg together put in woman both babies the same
- 4.Get any egg and throw away nucleus
- 3 take a nucleus from the embryo
- 2. zygote
- 1. an egg a sperm.
- Cell division and inheritance
- Chromosomes (made of DNA) before cell divides DNA doubles
- This process is call MITOSIS
- EXAMPLE
- Cystic Fibrosis (RECESSIVE)
- Polydactylys (DOMINANT)
- Inherited disorders
- Dominant
- Can't be carried (Stronger alleles)
- Recessive
- Can be carried (Weaker alleles)
- Dominant
- Chromosomes (made of DNA) before cell divides DNA doubles
- Specatation
- Fossils
- Mineral Replacement
- Minerals in groundwater replace minerals in hard parts of the skeleton e.g. bone/shell
- Mummification
- Growth of decay organisms is prevented by conditions in the ground e.g. too cold/acidic soft tissues are prevented
- Moulds and Casts
- Dead organisms pressed into soft sediment fossil decays and leaves shape making a cast. shape is a mould
- Trace Fossils
- Things made by organisms such as foot prints, burrows or root shape. can make casts in the right conditions
- 1. Dinosaur dies
- 2.More layers of sediment build up bones turn to stone fossils
- 3. The dinosaur is covered by a layer of sediment the soft parts of the body decay leaving hard bones
- 4. Many years later people find the fossilised bones
- 3. The dinosaur is covered by a layer of sediment the soft parts of the body decay leaving hard bones
- 2.More layers of sediment build up bones turn to stone fossils
- Mineral Replacement
- Fossils
- Darwin and Lamarck
- Theory of evolution
- Darwin- Survival of the fittest the fittest would go on to breed and offspring would have strengths and a new species can be made
- Enviromentalpressures- water, food, space and predators
- Mutations (changes in DNA)
- Common ancestor
- Survival of the fittest
- Reproduction
- Evolution
- Lamarck- if living things kept doing something they would change, they could learn
- Darwin- Survival of the fittest the fittest would go on to breed and offspring would have strengths and a new species can be made
- Theory of evolution
- Cells
Comments
Report