cell biology.

Question 1

how do you calculate the magnification of a microscope?

Answer 1

magnification of the microscope=magnification of eyepiece X magnification of objective.

Question 2

how do you calculate the magnification of an image?

Answer 2

magnification= size of image/real size of object
(/=divided by).

Question 3

function of the nucleus?

Answer 3

the nucleus contains genetic material, including DNA and controls the cells activities.

Question 4

function of the cytoplasm?

Answer 4

cytoplasm (a jelly like substance), contains dissolved nutrients, salts & structures-organelles. this is where many chemical reactions happen.

Question 5

function of the cell membrane?

Answer 5

controls the movement of substances, in and out of the cell.

Question 6

function of mitochondria?

Answer 6

organelles that contain the enzymes for respiration, and where most energy is released in respiration.

Question 7

function of ribosomes?

Answer 7

tiny structures where protein synthesis occurs.

Question 8

function of chloroplast in plant cells?

Answer 8

organelles that contain chlorophyll-which absorbs light for photosynthesis. it also contains enzymes for photosynthesis!

Question 9

function of a cell wall in plant cells?

Answer 9

made up of cellulose fibres that strengthen the cell and support the plant.

Question 10

function of a permanent vacuole in a plant cell?

Answer 10

filled with cell sap to help keep the cell turgid.

Question 11

cells of bacterial are called…

Answer 11

prokaryotic cells

Question 12

cells of animals, plants and fungi are called…

Answer 12

eukaryotic cells

Question 13

what is a eukaryotic cell?

Answer 13

a cell that contains a nucleus.

Question 14

what is a prokaryotic cell?

Answer 14

a simple cell that does not have a nucleus. the DNA is free in the cytoplasm.