Cells

Question 1

Meiosis:

Answer 1

46 chromosomes 
Nucleus dissolve microfibres attach and align
Chromosomes pulled apart by chromatids
Microfibres dissapear 
Split to 2 cells with 46 chromosomes 
Fibres again pull apart now 23
Spilt to 4 cell 23 chromosomes

Question 2

Natural selection

Answer 2

Individuals most suited to environment are MORE LIKEY TO SURVIVE DUE TO DIFFERENCES IN GENES. Indiciduals poorly adapted die off leaving the next generation full of evolved animals.

Question 3

Chemical reactions take place in order to gain

Answer 3

Full outer shell of electrons

Question 4

Body systems are coordinated by the

Answer 4

Endocrine and nervous system

Question 5

Use diagram of lightbulb to explain relationship with voltage resistance and current

Answer 5

As voltage increases more electrons are forced through the filament resulting in increase current. Electron forced through filament resulting in increased resistance.b

Question 6

Evidence of continental drift

Answer 6

Fossil shows common aces try between far counties
Rock structure similar
Common vegetation

Question 7

Mitosis:

Answer 7

Diploid cell
Chromosome double
Nucleus dissolve micro tubules attacks to centermetre
Align
Chromosome pulled aparts
Fibre dissapear
Split to 2 daughter cells 46 chromosomes each