OCR Biology B1 - Body and Plants
Second half of Biology Unit 1.
- Created by: LJas
- Created on: 23-10-15 20:27
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- B1 - Body and Plants
- The Eye
- Lens
- Accomodation
- Focuses light on the retina
- Accomodation
- Iris
- Controls amount of light entering the eye
- Pupil
- Allows light to enter the eye
- Cornea
- Refracts light into the eye
- Optic Nerve
- Retina
- Receptors
- Detect light
- Roots
- Cones
- Receptors
- Lens
- Eye Problems
- SHORT
- Image before
- Requires concave lense
- LONG
- Image behind
- Requires convex lense
- SHORT
- CNS
- Stimulus ->
- Receptor ->
- Sensory Neuron ->
- Relay Neuron ->
- Motor Neuron ->
- Effector ->
- Response
- Effector ->
- Motor Neuron ->
- synapse
- Relay Neuron ->
- Motor Neuron ->
- Effector ->
- Response
- Effector ->
- Motor Neuron ->
- Relay Neuron ->
- Relay Neuron ->
- Sensory Neuron ->
- Receptor ->
- Stimulus ->
- Homeostatis
- Maintaining constant internal enviroment
- Norm = 37.C
- Too Hot
- Hair flat
- Vaso-dilation
- Sweat (evaporates)
- Too Cold
- Shivering
- Hair Stands
- Vaso-constriction
- Too Hot
- Norm = 37.C
- Maintaining constant internal enviroment
- Plant Responses
- Photosynthesis
- CO2 + H2O -> C6H12O6 + O2
- Hormones
- Control Growth
- Auxin
- Phototrophic
- Shoots grow towards light
- Photosynthesis
- Inheritance
- Alleles
- Recessive
- Dominant
- Heterozygous
- Two different
- Homozygous
- Two the same
- Chromosomes
- Alleles
- Recessive
- Dominant
- Heterozygous
- Two different
- Homozygous
- Two the same
- Alleles
- Alleles
- Human Variation
- Random Fusion
- Not controlling which gametes meet
- Crossing Over
- Causing ends of chromosomes to switch genes
- Random Assort
- Randomly select chromosomes to go into gametes
- Random Fusion
- Genetic Disease
- Huntingtons
- Faulty genes
- Cystic Fibrosis
- The Eye
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