Cells

What is the theory of magnification of the microscope?

Magnification of eyepiece x magnification of object

What is the theory of magnification of an image ?

Size of image divided by real seize of object

State 1 mm=? μm

1 mm=1000 μm

State 1 Nm=? mm

1 Nm=1 divided by 1000 mm

State mm—>Nm (x?)

Mm—>Nm(x1000)

State Nm—>mm (divided by ?)

Nm—>mm (divided by 1000 )

State ? times bigger=? order of magnitude

10 times bigger=1 order of magnitude

State the function of cytoplasm

Contains dissolved nutrients and salts and organelles. It is where many of chemical reactions occur

State the function of nucleus

Controls the cell’s activities and contains DNA

State the function of cell membrane

controls the movement of substances in and out of the cell

State the function of mitochondria

contains the enzymes for aerobic respiration and it is released energy for respiration

State the function of ribosomes

it is where protein synthesis occurs

State the function of chloroplast

contains the green pigment and chlorophyll and the enzymes for photosynthesis

State the function of cell wall

made from cellulose fibres strengths and supports the cell

State the function of vacuole

filled with cell sap to keep the cell turgid

State the theory of measuring cell size for scale

eyepiece graticule divisions x 4.9

Is bacteria cell prokaryotic cell or eukaryotic cell?

bacteria is prokaryotic cell

What are eukaryotic cells?

animal, plant, and fungi

what are the different between the prokaryotic cell and eukaryotic cell?

prokaryotic cell—> 1) no mitochondria, chloroplast, and nucleus 2) DNA is a single molecule 3) division by binary fission