OCR GCSE Biology B1 Gateway - concept maps and summaries

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OCR GCSE Biology B1 Gateway - concept maps and summaries

Education Technology

B1.1
Fitness and
health

B1.2
Health and
diet

B1.3
Preventing
diseases

B1.4
Infectious
diseases

B1.6 The
eye

B1.7 The nervous
system

B1.8 Drugs

B1.9 Tobacco and
alcohol

B1.1 0
Controlling body
temperature

B1.11 Controlling blood glucose levels

B1.12
Controlling
plant
growth

B1.16
Variation

Alleles

Genetic
variation

Gametes

Caused by

Male and female sex
cells

are
Different versions of
the cells DNA code

are

B1.14 Genetic variation
Contain only 23
chromosomes and all are
different

1. Gamete formation –
splitting of the male
and female cell in
gamete formation leads
to random different
sex cells.

2. Fertilisation – when
gametes combine
during fertilisation the
23 chromosomes from
the male and female
randomly form the 46
chromosomes of the
new baby

3.Mutations –
spontaneous incorrect
division of DNA OR
environmental factors
such as aggressive
chemical attack, UV, X
rays or gamma rays on
cells

B1.15 Human
characteristics

B1.16
Inherited
disorders

B1.16
Inherited
disorders

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1.

2. B1.1 Fitness and health

3. B1.2 Health and diet

4. B1.3 Preventing diseases

5. B1.4 Infectious diseases

6. B1.6 The eye

7. B1.7 The nervous system

9. B1.9 Tobacco and alcohol

10. B1.1 0 Controlling body temperature

11. B1.11 Controlling blood glucose levels

12. B1.12 Controlling plant growth

13. B1.16 Variation

14. Alleles Genetic variation Gametes Caused by Male and female sex cells are Different versions of the cells DNA code are B1.14 Genetic variation Contain only 23 chromosomes and all are different 1. Gamete formation – splitting of the male and female cell in gamete formation leads to random different sex cells. 2. Fertilisation – when gametes combine during fertilisation the 23 chromosomes from the male and female randomly form the 46 chromosomes of the new baby 3.Mutations – spontaneous incorrect division of DNA OR environmental factors such as aggressive chemical attack, UV, X rays or gamma rays on cells

15. B1.15 Human characteristics

16. B1.16 Inherited disorders

17. B1.16 Inherited disorders