Cell Structure

Question 1

compound microscope

Answer 1

also known as a light microscope
used in school lab
has 2 lenses (objective + eyepiece)

Question 2

total magnification

Answer 2

multiply the power of the 2 lenses

Question 3

function of eyepiece/objective lens

Answer 3

magnify image

Question 4

function of nosepiece

Answer 4

rotates the desired objective lens

Question 5

function of condenser

Answer 5

focuses light

Question 6

function of diaphragm

Answer 6

adjusts amount of light

Question 7

function of fine focus

Answer 7

to precisely focus image
smaller knob

Question 8

function of coarse focus

Answer 8

roughly focuses image
bigger knob

Question 9

microscope diagram**

Answer 9

pg 57 notes

Question 10

electron microscope

Answer 10

uses a beam of electrons instead of light to magnify an image

Question 11

how does an electron microscope work?

Answer 11

a transmission electron microscope (TEM) sends a beam of electrons through a specimen allowing internal structures to be viewed
electron microscopes are much more powerful than a light microscope

Question 12

cell ultrastructure

Answer 12

the detail of a cell as seen under an electron microscope

Question 13

animal cell diagram***

Answer 13

pg 58 book 1 LABELS

Question 14

plant cell diagram***

Answer 14

pg 58 notes LABELS

Question 15

function of cell membrane

Answer 15

retains cell contents
provides some support
allows entry or exit of molecules in or out of cell

Question 16

where is the cell membrane?

Answer 16

found directly inside cell wall (plants)

Question 17

function of the nucleus

Answer 17

control centre of cell
nuclear pore- allows mRNA in/out of the nucleus
nucleolus-makes ribosomes

Question 18

what is the nucleus made of

Answer 18

made of structures called chromatin which is composed of DNA and protein

Question 19

function of the mitochondria

Answer 19

site of respiration
supplies energy to the cell

Question 20

function of the chloroplast

Answer 20

site of photosynthesis
contains a loop of DNA

Question 21

function of the cell wall

Answer 21

provides strength and support to plant
made of cellulose ie fully permeable

Question 22

function of ribosomes

Answer 22

make proteins
composed of protein + RNA

Question 23

what organelles do plant cells have that animal cells don’t?

Answer 23

chloroplast
cell wall
vacuole

Question 24

function of vacuole

Answer 24

stores food

Question 25

prokaryotic cells

Answer 25

cells that do not have a nucleus or membrane bound organelles

Question 26

what are the features of prokaryotes

Answer 26

single celled
have a loop of DNA instead of nucleus
no membrane enclosed organelles
eg bacteria

Question 27

eukaryotic cells

Answer 27

cells that have a nucleus and membrane bound organelles

Question 28

features of eukaryotes

Answer 28

multicellular
larger than prokaryotic cells
more advanced that prokaryotic cells
eg plants, animals, fungi

Question 29

experiment: to use a light microscope**

Answer 29

pg 61 book 1

Question 30

experiment: to prepare and examine plant + animal cells

Answer 30

pg 62 book 1