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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 ­…

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have no cell walls; they usually have nervous coordination and
are able to move from one place to another; they often store
carbohydrate as glycogen.
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…

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carry out photosynthesis but most feed off other living or dead
organisms.

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…

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Exa Dog Tree E.Coli Yeast Amoeb HIV,
mpl a Flu,
e HPV
Car Glycogen Starch Glyco
boh /sucro gen
ydr se
ate
Stor
e
Nut Eating, Photos Some
riti feeding ynthes photos
on is ynthesi
s,
mostly
feed off
other

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organis
ms
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…

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