Download Grade 7: A re-introduction to Biology - gillammscience

Grade 7: A re-introduction to Biology
Use your books and the internet to complete the following tasks. When you are finished
go back to www.gillammscience.pbworks.com go to your class page, then to cell
respiration activities. Insert your name in the table, upload the document into the column
next to your name.
How do I upload documents?
Look at the right hand side bar, click upload documents, upload it, the document then
appears in the side bar as a link. Click in the table where you want the document to
appear. Then click your document.
What shall I call my document?
Your document should be called your name followed by basicbiology. E.g.
john_basicbiology.doc
1. Below insert a basic picture of an animal cell. Make sure it is unlabelled. Insert
the following labels on it: nucleus, mitochondria, cytoplasm, cell membrane,
small changing vacuole.
Cell Membrane
Cytoplasm
Nucleus
Small Changing Vacuole
Mitochondria
2. Below insert a basic picture of a plant cell. Make sure it is unlabelled. Insert the
following labels on the picture. Nucleus, mitochondria, cytoplasm, cell membrane,
cell wall, chloroplasts, large vacuole.
Cell Wall
Cytoplasm
Cell Membrane
Large Vacuole
Nucleus
Mitochondria
Chloroplasts
3. In the venn diagram below show the features of the animal cell and plant cell that
are the same (in the overlapping areas) and show those that are different.
Plant
Cell
Animal
Cell
Large
Vacuole Cell Membrane
Nucleus
Chloroplasts Mitochondria
Cytoplasm
Small
Changing
Vacuole
4. Not all cells look the same. In the table below insert pictures of 3 different types
of plant cell and three different types of animal cell. Explain how the shape and
structure of the cell relates to the job the cell does.
Animal cell picture
Red Blood Cell
Explanation
These cells
carry oxygen
around the
body in the
blood. They
are very
small and
have no
nucleus.
They are full
of a
substance
called
haemoglobin.
This is the
substance
which carries
the oxygen
around the
body.
Plant Cell picture
Onion/ Epidermal Cell
Sperm Cell
A sperm cell is Root Hair Cell
the germ cell
and its
function is to
carry the males
genes to the
female's egg
for
fertilization.
Explanation
The
epidermis
is a layer of
skin around
the plant.
Epidermis
cells fit
closely
together.
They often
have a
waxy
waterproof
covering.
These cells
are found
near to the
tip of the
roots. Most
water
enters the
root
through
them.
Nerve Cell
Nerve cells
have many
arms or links
which
connect to
other cells.
They pass
messages to
other nerve
cells. The
messages
are electrical
impulses.
Phloem Cell
These cells
carry
sugars and
other food
substances
around the
plant. They
form
columns of
cells which
pass
substances
from one to
the other.
5. Cells are organised into tissues, tissues into organs and organs into organ systems.
Below insert a picture that shows this organisation.
6. All objects can be classified as living or non-living. What are the 7 characteristics
of living things. All seven have to be fulfilled to classify something as alive.
Growth
Reproduction
Respiration
Sensitivity
Excretion
Nutrition
Movement
7. In the table below name 3 different organ systems. In the relevant columns enter a
diagram of the system, a link to a video or animation of how the system works
and a brief description of how that organ system helps keep you alive.
Organ
system
name
Respiratory
System
Nervous
System
Organ system picture
Animation/video link of organ system
Brief
description
of how
this organ
system
helps keep
you alive.
http://www.youtube.com/watch?v=ps64D3Juv5A The
respiratory
system
helps us
change
gases and
breathe
air. It
helps us
inhale
oxygen
and exhale
carbon
dioxide.
The main
organs
used are
the lungs.
http://www.youtube.com/watch?v=iThe
NgGKSNiNw
nervous
system
sends
messages
from the
brain to
the rest of
the body.
It helps the
brain
control or
parts of
the body
and how to
move
them.
Digestive
System
http://www.youtube.com/watch?v=1nFwO9iU5Y
The
digestive
system
helps us
digest our
food. It
helps us
by getting
rid of the
unwanted
substances
and
bacteria’s.