Each drawing should be done with a sharp pencil
and ruler
draw a square first
Label the diagram
Write down magnification of the
drawing
Organelles
nucleus
contains DNA and controls cell activity
Chloroplast
in the cytoplasm. They convert light into energy that the plants
use. This is called photosynthesis
Mitochondria
where respiration takes place
vacuole
large storage space filled with sap. Stores food/nutrients the cell needs to
survive
Cytoplasm
holds the cells in place
Cell wall
gives cell its shape. Supports thecell
Cell membrane
Controls what comes in and what comes out
Cells
Red blood cell
Has no nucleus. carries oxygen around the body
Egg cell
Carries mothers DNA. much larger than any other cell
Root hair cell
Absorbs minerals and water from soil. It has a larger
surface area to absorblots of water
Sperm cell
Carries fathers DNA. has a long tail so it can
swim to the egg cell
White blood cell
Has a flexible shape to help engulf diseases
organism
Nerve cell
Carries nerve impulses around body. they have many branches at ends to
connect to other nerve cells
Palisade cell
carries photosynthesis by using chloroplast
to absorb sunlight
food tests
Carbohydrates
Protein
Lipids (fats and oils)
Test for starch is IODINE
Test for reducing sugars is called the Benedict's test
Test for protein is called the BIURET test
Test for lipids is called the EMULSION test
Glucose + oxygen to Carbon Dioxide + Water
Enzymes
The substance that binds to the enzyme is
called substrates
The part where binding takes place is called the
active site
When the enzyme and substrate are bound together,
it is called enzyme-substance complex
The name of the substance when it releasessfrom the
enzyme is called a product
When compared to enzymes in digestion this is a
synthesis reaction
An enzyme is usually made of proteins.
Biological catalysts
Do not get used up
Substrate (eg insoluble food) fits into the Active site of the
enzyme where it can be broken down or bound together
and then be released
Enzymes can only react with a specific substreate
Eukaryotic= with a nucleus
Prokaryotic= without a nucleus
Specialised cells- A specialised is a
cell that has adapted to do its
function.
For example a sperm cell. A sperm cell has a
tail to help swim. There are enzymes in the
head. Has a large number of mitochondria
fro repiration for energy