Diversity Of Life

Question 1

Characteristics of life

Answer 1

Adaption through evolution
Cellular organisation
Growth + developement
Hereditary
Homeostasis
Metabolism
Reproduction
Response to stimuli

Question 2

Origin of life on earth via

Answer 2

Generation of complex bio molecules due to a complex early atmosphere - deep sea hydrothermal vents
Generation of replication organisms - RNA
Panspermia - life In space

Question 3

Scale of Nature

Answer 3

Human eye:
- human height
- length of some human muscle and nerves
- chicken egg
Light miscropy:
- frog egg
Election microscopy:
- human and plant eggs
- nucleus
- most bacteria
- mitochondria
- smallest bacteria
- ribosomes
- proteins
-lipids
- small molecules
- atoms

Question 4

Natural selection :

Answer 4

Variation - individuals in a population vary from one another
Inheritance - parents pass on their traits to their offspring genetically
Selection - some variants reproduce more then others
Time - successful variations accumulate over many generations