unit 2 biology
- Created by: amy
- Created on: 09-05-13 16:44
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- Unit 2 Biology
- Variation
- Genetic Variation
- Variation due to Genes
- E.G. Blood type
- Variation due to Genes
- Environmental Variation
- Variation due to lifestyles and environment
- E.G. height
- Variation due to lifestyles and environment
- Standard deviation
- the equation used to measure the range of values
- Square root of the sum of value from sample minus mean squared divide by number of vaules
- the equation used to measure the range of values
- Genetic Variation
- DNA and Meiosis
- The Triplet code
- a code containing 3 bases
- which codes for 1 amino acid
- a code containing 3 bases
- Structure of DNA
- deoxy-ribose
- phosphate
- organic base
- Double ring A,G
- single ring C,T
- DNA and chromsomes
- Homologous chrosomes
- chromsomes that determine the same genes
- Alleles
- one form of a gene
- Homologous chrosomes
- Meiosis and Gentic variation
- crossing over
- when genes swap cromatids
- Independent segregation
- when the chromatids organise them selves in a radom order
- crossing over
- The Triplet code
- Genetic Diversity
- selective breeding
- breeding sele cted animals for desired traits
- E.G. beef cows
- breeding sele cted animals for desired traits
- the founder effect
- when a small population is made from a existing one
- giving the new population specifc genes
- when a small population is made from a existing one
- Gentic bottlenecks
- when a species suffer large lose in numbers
- leaving only specifc genes E.G. elephant seals
- when a species suffer large lose in numbers
- selective breeding
- The Variety of Life
- Heamglobin
- takes oxygen aorund the body
- can have hig or low afinty
- Oxygen disociation Curve
- shows factors effecting oxygen uptake
- Starch , glycogen and cellulose
- starch and glycogen storage and cellulose in plant structures
- plant cell structure
- move chloroplast near surface to adsorb sunlight
- Heamglobin
- The Cell Cycle
- replication of DNA
- semi consevative
- uses one strand from old DNA
- DNA Helicase and ployimerase
- semi consevative
- mitosis
- the normal division of cells
- interphase,prophase ,metaphase,anaphase ,telophase and cytokynesis
- the normal division of cells
- cell cycle
- the way the cells divide change in this can detect cancer
- replication of DNA
- Cellular Organisation
- celll differentiation
- looking at different tissue and systems
- E.G. organ systems and tissue types
- looking at different tissue and systems
- celll differentiation
- Exchange and Transport
- transpiration
- factors are light ,temperature,humidity ,
- exchange systems
- use pump to move blood
- s.a to vol ratio not used
- exchange in insects and fish
- use gills and spircales
- transpiration
- Classifcation
- naming
- kingdom,phylum,class,order,family,genus,species
- naming
- Evidence for Relationships Between Organisms
- DNA Comparision
- Comparing DNA and amino acids
- courtship behaviour
- showing behavior to find mate
- DNA Comparision
- Adaptation and Selection
- genetic variation of bactira
- passes a copy of the plasmid and us a conjugation tube to do so
- antibiotics and resistance
- mrsa becomes resistant to antibotics
- genetic variation of bactira
- Biodiversity
- species diversity
- measured by habit and amount of species therer
- human diversity and species diversity
- impacts of deforestation
- impact of agriculture
- species diversity
- Variation
- a code containing 3 bases
- which codes for 1 amino acid
- when genes swap cromatids
- looking at different tissue and systems
- E.G. organ systems and tissue types
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