Science B1

Drugs
1. Stimulants
  1. Caffeine
  2. Cocaine
2. Depressants
  1. Alcohol
  2. Solvent
3. Painkiller
  1. Aspirin
  2. Heroin
4. Hallucinogens
  1. LSD
  2. Cannabis
5. Performance enhancers
  1. Anabolic Steroids
Smoking
1. 4 Chemicals
  1. Tar
  2. Carbon Monoxide
  3. Nicotine
  4. Particulate
Alcohol
1. Short term effects
  1. Slurred speech
  2. Drowsiness
  3. Vomiting
  4. Impaired Judgment
  5. Coma
  6. Blackouts
2. Long term effects
  1. Liver diease
  2. Nerve damage
  3. Sexual problems
  4. Permanent damage to the brain
  5. Injuries
Control system
1. 37 digrees
  1. Enzymes
  2. above this and the enzymes with denature
2. what do we need to control in our bodies?
  1. Temperature
  2. Heart rate/ carbon dioxide CO2
  3. Water levels
  4. Glucose
3. Homeostasis
  1. The maintenance of a constant internal environment
4. Temperature cycle
  1. High body temperature
    1. Taking clothes off
    2. Sweating
    3. Vosodilation
  2. Low body temperature
    1. Hairs lift up
    2. Vosodilation
    3. Shivering
    4. Putting clothes on
  3. Veins
    1. Sweating cools down the body and evaporate from the skin and takes the heat with it.
    2. Shivering is to help the body get warm by muscles contract to create energy to heat the body up.
Staying in Balance
1. Diabetes
  1. Type 1
    1. You are born with it. NO insulin made by pancreas
  2. Type 2
    1. You can get it later on. some insulin made usually in adulthood
Plant Hormones
1. a growth movement is response to a stimulus is a tropism
2. movement towards a stimulus is called a positive tropisum
3. negative tropism- a movement away from a stimulus
4. Phototropism- light
5. Geotropism-gravity
6. Hydrotropism
7. Auxin stays on the dark side
  1. weedkillers
    1. Auxin are used in selective weedkiller. It made trees lose their leaves without leaves plants cannot make food and the trees die.
  2. Rooting powder
    1. If cuttings are dipped into auxin powder, new roots start to grow on the cuttings so they can anchor in soil.
  3. Fruit ripening
    1. Auxin can be sprayed onto fruit trees to prevent the ripe fruit from dropping. Then they can harvested the fruit at the same time and they wouldn't be bruised
  4. How does auxin work
    1. Auxin is at the top of the plant so if you cut the top of the plants off the auxin can't travel to the darkside and it want enlongate
Variation and Inheritance
1. homologous chromosomes
  1. We get some characteristics from our chromosomes
    1. We have 46 in every cell in our body
  2. Chromosomes from the male and female if they are the same. They are called homologous chromosomes
  3. Each chromosomes is a very long molecule that is called DNA
2. Environment
  1. Speaking English
  2. Ear piercings
  3. Tan lines
3. Inherited
  1. Intelligence
  2. Eye colour
  3. Sex
  4. Blood group
  5. Tongue rolling
4. Both
  1. Body mass/ Weight
  2. Height
Dominant and Recessive
1. Different versions of a gene that code for different versions of a characteristics called alleles
Chromosomes
Inherited Diseases
1. Colour Blindness
Classification

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Science B1

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	Created by LJ Tech over 9 years ago