scientist use microscopes to see tings that is not visible with a naked eye.
light microscopes is more powerful than electron microscope.
what measurement do scientists use?
millimetres
centimetres
micrometers
electron microscopes use light.
Hooke's made the first microscope.
Leeuwenhoek was first to discover microscopic living things.
animal and plant cells have chloroplast in it.
animal cells have smaller vacuole than plant cells.
what do plant cells have that animal cells don't.
vacuole
nucleus
cytoplasm
cell wall
specialised cells have a special job.
there is one type of muscle cell.
cardiac muscles never get tired.
cardiac muscle is a voluntary muscle.
white blood cells carry oxygen.
connective tissue covers all other organs.
xylem carries water from roots.
phloem carries glucose from the leaves.
the waste product of photosynthesis is oxygen
