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• Biology Exams

  • Biology Exam 1: Units 1-4
  • Biology Exam 2: Unit 4-7
• Revision technique

  1. Read

  2. Cover your notes up and write down as much as you can remember

  3. Check how you did. Did you miss any information out?

  4. Repeat the whole process
• Only try and do a few of the squares at a time
• Don't keep doing the ones you know well
• Keep repeating the ones you struggle to remember
• Bees


  Prevent hard cons parts of the brain wes Homeethasis the maintenance of a constare atten
• Stimulat


  1. shend on

  2. Receper

  3. Seeory neur

  4. electric impul

  5. Deley neurone (CNG)

  6. Pater near

  7. Effecter

  8. Electrical impulse

  9. effa

  10. End to person

  11. Dectrical impe
• WOLTES PRACTICAL
• Things the body needs to control


  • Temperature (therearegdetery centre is the brain)
  • od gecere pancrees
  • Water (kidney)
  • Merel era/
  • Urea (waste) (ver and keys
• Endocrine Systes


  The glands of the bady-secrete harmones
• Pituitary gland


  Often referred to as the meter glond because stintes other glands
• Glucose Regulation


  Prevet nerve c
• Menstrual Cycle

  28 days (evletin dey 14)
• Negative Feedback


  1. te and brain dange
• Tree 1

  1. Dent moks

  2. Tractant

  3. injected del

  4. FRAM

  5. From pita

  6. From

  7. SH

  8. The Ing

  9. LM

  10. chon day 14

  11. Mark

  12. Controutin
• Her bi pet net net certain
• Prevent inplan of

  ZYE CHT. CHLY
• rought on by by
• Mix with que
• Cared diet
• Is it
• 5 t
• Stimulus

  • Stand on nail
• Normal stress level
• makimg insulin 1. Remove wanted insulin gene using enzymes 2. Take a plasmid from a bacteria (vector) 3. Open plasmid and insert insulin gene with DNA ligase 4. Put plasmid back in bacteria 5. Incubate to allow bacteria to grow and make insulin.
• GM Crops + Resistant to insects, viruses, fungi + Grow bigger, taste better, more nutritious + Crops can be grown all over the World + Increased crop yield

  + Worries over long term effects

  + Reduced biodiversity

  + Could develop allergies to the food

  • Worries over long term effects - Reduced biodiversity
  • - Could develop allergies to the food
  • - Herbicide resistant gene could spread to weeds making superweeds
• 1. NATURAL SELECTION
  2. Variation occurs naturally within a species due to mutations 2. Some organisms have adaptations increasing their chances of survival 3 These organisms are more likely to reproduce 4. The genes responsible for the adaptation are passed on to their offspring.
• Revision technique

  Read, cover, write, check, repeat!
• Revision technique

  1. Read your notes

  2. Cover your notes up and write down as much as you can remember

  3. Check how you did. Did you miss any information out?

  4. Repeat the whole process
• TIPS: Only try and do a few of the squares at a time. Don't keep doing the ones you know well. Keep repeating the ones you struggle to remember.
• What is the formula for specific heat capacity?


  c = \frac{Q}{m \Delta \theta}
• What is the formula for density?


  \rho = \frac{m}{V}
• What does the formula \(E = m \times L\) represent?

  It represents the energy associated with a phase change of a substance