What three ways can cells vary from each other?
Shape, size, structure according to their functions.
What device do scientists use to study cells?
A microscope.
What are the scanning powers of the three objective lenses?
4x, 10x, 40x
Label the parts of the microscope.
1-base,2-light source,3-diaphragm,4-stage,5-stage clip,6+7-objective lens,8-revolving nosepiece,9-arm,10-fine adjustment,11-eyepiece tube,12-coarse adjustment
How are organ systems formed in a multicellular organism?
Several organs with related functions work together for a specialised purpose.
Name the two pieces of equiptment shown in the picture.
Slide and cover slip
What does chloroplast contain and why is it important?
It contains chlorophyll and it is used to absorb energy from the sun to make food during photosynthesis.
What is a unicellular organism?
An organism made of only one cell.
Why is iodine/methylene bule solution added to the cells before observing them under a microscope?
The iodine solution highlights the different parts of the cell so that we can observe the cells more clearly under the microscope.
What are cells?
The basic building blocks of organisms.