Download 4 - IES Ramón Giraldo

UNIT 7. THE SIMPLEST LIVING THINGS
Worksheet
1) Are these statements true or false? Correct the false ones.
a. Monera Kingdom includes animals and fungi.
b. Bacteria have prokaryotic cells.
c. Most bacteria are autotrophs.
d. Bacteria have capsule, cell wall and cell membrane.
e. Bacteria are classified by shape into four groups.
f. Bacillus are round.
g. Parasites live on dead matter.
h. Cyanobacteria produce illeness.
2) Explain how are Bacteria divided. Draw a picture of the process.
3) Label this picture about the bacteria’s cell
structure:
4) Which type of algae…
a. Uses rodophyll to absorb the sunlight?
b. Lives only in salt water?
c. Lives near the surface in salt and fresh water?
d. Uses chlorophyll to absorb the sunlight?
e. Uses fucoxantine to absorb the sunlight?
5) Complete this chart about differences and similarities between protozoa and
algae:
Number of
Cells
Type of Cells
Nutrition
Tissues
Protozoa
Algae
6) How can these protozoa move?
Cilliates
Rhizopods
Sporozoa
Flagellates
They cannot move
Cillia
Flagellum
Pseudopods
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7) True or false? Correct the false ones.
a.
b.
c.
d.
e.
f.
Viruses carry out the three life processes.
All viruses have a viral envelope.
Viruses can live independently of their host.
All virus have nucleic acids.
Not all viruses are obligate parasites.
All virus have a capsid made up of proteins.
8) Label this picture about the virus structure 
9) What is an infectious disease?
10) Cavities in teeth are produced by microorganisms like
Streptococcus.
a. What type of microorganism is it?
b. Are cavities infectious diseases? Why?
c. What is the best way to prevent cavitites?
11) Match the columns:
- They are not really cells, they are obligate parasites.
- Autotrophs or heterotrophs, with prokaryotic cells.
- Heterotrophs, eukaryotic, unicellular organisms.
Bacteria
Protozoa
Viruses
12) Compare vaccines and antibiotics:
We use them before getting ill 
They have a weaked microorganism 
We use them when we are already ill 
It is a curative measure 
It is a preventive measure 
Thanks to them, the body produces antibodies against a specific microorganism 
13) How does intestinal flora help human beings?
14) Why are so important decomposer microorganisms?
15) Using the chart on page 79 of your book:
Illnesses transmitted through the air 
Illnesses transmitted through the water 
Illnesses transmitted through the skin 
Illnesses transmitted through sexual or blood contact
Illnesses transmitted through spoiled food 
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