1
Q
To be considered as living, an organism must:
A
- transform energy
- maintain homeostasis
- reproduction
2
Q
What is energy transformation?
A
- cellular work - chemical reaction (metabolism)
- fuelled by ATP (made from cellular respiration)
- transform energy into new molecules
3
Q
Three source of energy:
A
- inorganic molecules
- organic molecules
- light
4
Q
Autotroph
A
- make organic molecules from inorganic molecules + outside E
Photoautotroph : light + CO2 = glucose
Chemoautotroph: chemical E + CO2 = glucose
5
Q
Heterotroph
A
Chemohetetroph: consume organic molecules as both E & C source and make it into other carbon molecules
Photoheterotroph: consume light as E source and obtain C from food
