2. Organization
Bacteria protozoan Microalgae jelly fish
Organisms exhibit a high level of organization
3. Homeostasis
It is the maintenance of a dynamic internal environment
in terms of temperature, pH, water concentrations, etc.
4. Energy acquisition and release
Organisms obtain energy from sunlight, inorganic
chemicals, or another organism, and release it in the
cellular respiration process.
5. Modes of nutrition
Ways of obtaining and using nutrients
Nutrition
Autotrophic Heterotrophic
nutrition nutrition
Holozoic Saprophytic Parasitic
nutrition nutrition nutrition
6.
7. Autotrophic nutrition
Organisms make their own
food (complex organic
substances) using simple
inorganic substances
Autotrophs
by photosynthesis
8. Heterotrophic nutrition
Organisms which depend
on other organisms or dead
organic matters as their
food sources
Heterotrophs
Cannot make their own
food and obtain their food
in organic form
9. Holozoic nutrition
Organisms take in solid organic food from other organisms
Food needs to be broken down into small molecules before
they can be used by the organisms
Heterotrophs
13. Saprophytic nutrition (Saprophytism)
Organisms feed on dead organisms or non-living organic
matter
They are called saprophytes (fungi, bacteria, etc.)
Decomposers: Important to recycle organic matter
14. Parasitic nutrition (Parasitism)
Organisms (parasite) obtain organic compounds from
another living organism of a different species (host)
Parasite is benefited
Host is harmed
15. Growth and development
Even single-celled organisms grow until they develop into
mature cells.
Multicellular organisms pass through a more complicated
process of differentiation and organogenesis.
16. Reproduction and heredity
All cells come from existing cells. Therefore, they must
have some way of reproducing, whether that
involves asexual or sexual strategies.
Genetic information will pass from one generation to
the next one
20. Evolution
Change in the inherited
characteristics of biological
populations over successive
generations.
Evolutionary processes give
rise to diversity at every level
of biological organization
(species, individuals
and molecules, such
as DNA and proteins).