Download Micro-organism and Disease 1

Garnock Academy Level 3 Science
Micro-organisms and Disease Homework 1
SCN 3-13b
Name _________________________________
Date to be returned __________________
1.
Teacher _______________________
Mark
________
Complete the table showing the 7 life processes using the word bank to help you:
Life process
Meaning
able to move all or a part of itself
producing more living things like itself
sensing and reacting to things around it
increasing in size
Respiration
using a chemical reaction to release energy
getting rid of waste materials
needing food
excretion
movement
sensitivity
growth
reproduction
feeding
(3)
2.
Circle the THREE micro-organisms in the box below:
bacteria
cats
daffodils
oak trees
pollen grains
viruses
dirt
dust
fungi
mice
Write the names of the three micro-organisms in order of size, starting with the
smallest.
(2)
CfE Science Level 3: SCN 3-13b
Garnock Academy
3.
Read the following passage and answer the questions below:
The first person to describe protoctists was a Dutch cloth salesman called Antoni
van Leeuwenhoek (1632-1723). He became very good at making lenses, which he
used to inspect the fibres in the cloth that he bought and sold. He also made
microscopes and in 1674 he discovered tiny, one-celled moving organisms in
water which he called animalcules (tiny animals).
Today we consider these animalcules as part of the protoctist kingdom. This
kingdom contains many very different organisms—everything from the smallest
algae (0.01mm long) to huge giant kelp seaweeds (up to 65m long). These
organisms are classified as protoctists because they do not fit very well into any
other group. Like plants, fungi and animals, protoctists have nuclei in their cells,
but unlike these other groups, their cells do not group together to form different
tissues (all their cells are very much the same).
Many protoctists are one-celled or unicellular. One is called Euglena, which has
some features you would expect to find in an animal cell and others others that
you would expect to find in a plant cell.
a.
Who first discovered protoctists?
b.
Name a unicellular protoctist and a multicellular protoctist.
c.
Which features of Euglena are the same as both plant and animal cells?
d.
Which features of Euglena are the same as plant cells?
e.
Which features of Euglena are the same as a whole animal eg rabbit?
(5)
CfE Science Level 3: SCN 3-13b
Garnock Academy