Check out the video in my youtube channel

2.  Mixed group of organisms
 Microscopic single celled organisms
 Animal like cells – protozoa Ex: amoeba
 Plant like cells – algae such as chlorella

3.  Single celled organisms
 1 to 5 micrometer in length
 Surrounded by cell wall to protect the bacterium
and shape of the cell
 Cell wall made of peptidoglycan
 No nucleus instead has DNA is loose forming a
circular loop
 Some bacteria can move with the help of
flagella

4.  Has genome which can be used in cloning
process
 Small circular rings of DNA
 Bacteria are important decomposers
 Lactobacillus bulgaricus – used by humans to
make food

5.  Can only reproduce inside living cells
 Have no cells, cytoplasm and nucleus
 Made of genetic material which can either be
DNA or RNA
 Do not feed, respire, excrete, move, grow or
respond or carry out any normal
characteristics of living things except
reproduction

6.  A virus reproduces by entering a host cell
and taking over the host genetic machinery
to make more virus particles
 Host cell dies and particles are released to
infect more cells.Some viruses infect plant
cells

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