biology winter assesment 26

What do both plant and animal cells contain

Nucleus, cell membrane, cytoplasm, ribosomes, mitochondria

What do only plant cells have

Chloroplast, cell wall, vacuole, chloroplast

Function of the mitochondria

To carry out reactions involving aerobic respiration and is the power house of the cell

The function of the ribosome

To make proteins

Function of the Cell membrane

Allows substances to go in and out the cell

Cell wall

Protects the cell

Cytoplasm

Where chemical reactions take place

Nucleus

Contains DNA

Vacuole

Keeps the cell rigid

Chloroplast

Gives the plant the green pigment and allows photosynthesis to take place

Eukaryotic cells contain..

Membrane bound organelles

Where is DNA found in eukaryotic cells

The nucleus

Light microscope

Resolution is low, max magnification is around 2000x, light passed through the samples in order to be viewed, cost around £50-£20,000, used in schools, unid, and labs

Electron microscope

Resolution is very high, max. Mag is around 2,000,000x, used electrons that pass through the sample, cost around£100000, used in unís and labs

Calculate Actual size

Actual= image size/ mag size

Magnification

Image size/ actual size

Image size

Actual x magnification

Stem cells

undifferentiated cells which can give rise to a number of different cell types