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NATURE AND VARIETY OF LIVING ORGANISMS
Characteristics of Living Organisms:
Movement ­ being able to change position in order to carry out other life
processes.
Respiration ­ creating energy through respiration.
Sensitivity ­ being able to respond to our environment (e.g. our pupils
getting bigger in the dark)
Nutrition ­ taking in substances that bodies/organisms need in order to
survive (plants ­ absorbing nutrients/sunlight, animals ­ eating/drinking)
Excretion ­ the removal of waste products that the body has made.…read more

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Nervous coordination means they have a nervous system (brain, spinal cords,
and nerves)
Examples include mammals (for example humans) and insects (for example
housefly and mosquito)
FUNGI:
These are organisms that are not able to carry out
photosynthesis; their body is usually organised into a mycelium
made from thread like structures called hyphae, which contain
many nuclei; some examples are single-celled; they have call
walls made of chitin; they feed by extracellular secretion of
digestive enzymes onto food material and absorption of the
organic products;…read more

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Examples include Lactobacillus bulgaris, a rod
shaped bacterium used in the production of
yoghurt from milk.
VIRUSES:
These are small particles, smaller than bacteria; they are
parasitic and can reproduce only inside living cells; they infect
every type of living organism. They have a wide variety of shapes
and sizes; they have no cellular structure but have a protein coat
and contain one type of nucleic acid, either DNA or RNA.
Parasites take things from other living organisms.…read more

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Exa Dog Tree E.…read more

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Sing Multi Multi Single Single Single Single
le/ and ­ but
Mul Multic not a
ti ellular cell!
Cell
ular
Nuc Yes, Yes No, but Often Yes No,
leus humans contain many. they
have 46 a contai
chromoso circular n
mes chromo either
some of DNA or
DNA RNA.
Cell No Yes Yes Yes Some
Wal (cellul (chiti have,
l ose) n) some
don't.…read more

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