The characteristics of life Flashcards
(42 cards)
What is metabolism?
all the chemicals reactions that occur in the cell of an organism.
give 5 examples of metabolism
growth, movement, response, respiration and reproduction
what is life?
life is the procession of all the 5 characteristics of life to carry out all the reactions needed to survive and reproduce
what do organisms need to be considered alive?
they need all 5 characteristic of life
what are the 5 characteristics of life?
- organisation
- nutrition
- excretion
- response
- reproduction
what is the continuity of life?
all living things come from other living things of the same type
what is organisation?
living things are composed of cells, tissue,organsand organs systems
what is a unicellular organism?
a organism made up of one cell
give an example of an unicellular organism
bacteria
amoeba
what is a multicellular organism ?
an organism made up of many cells
give an example of a unicellular organism
humans
how is tissue formed?
groups of similar cells form tissue
how are organs formed?
many tissue forms organs
how are organ systems formed?
many organs from organ systems
how are organisms formed?
organ systems form organisms
what is nutrition?
the way organisms obtain and use food
what are the two types of nutrition?
autotrophic and heterotrophic nutrition
what is autotrophic nutrition ?
the way green plants make their own food by photosynthesis using sunlight energy
what is heterotrophic nutrition?
organisms that take in food from other organisms
give the two types of heterotrophic nutrition
parasites and saprophytes
what are parasites
organisms that live on a live host and take in food from the host causing it harm
what are saprophytes?
organisms that live on a dead organism /matter , taking food from it.
give an example of a heterotroph
humans
rabbits
give an example of a parasite
fleas, lice , tics , worms