cell structure

Question 1

name the microscope we use in the lab

Answer 1

compond microscope

Question 1

what are the two magnifiying lens called

Answer 1

eye peice lens and objective lens

Question 2

name the parts of the microscope

Answer 2

eyepiece,
objective lens,
stage,
iris diaphram,
condenser,
light source,
fine focus knob,
coarse focus knob

Question 3

how do you find the magnification

Answer 3

magnifying power of eyepeice multiplied by the magnifying power of the objective lens

Question 4

what is an electron microscope

Answer 4

a microscope that uses electrons instead of light because electrons have a lower wavelength than light

Question 5

advantages of an electron microscope

Answer 5

the resolution is much better
the magnification is greater

Question 6

what are cells

Answer 6

the basic units of structure and function in an organism

Question 7

what are internal structures in a cell called

Answer 7

organelles

Question 8

draw a basic animal cell

Answer 8

should include
nucleus
cytoplasm
cell membrane
protoplasm

Question 9

another name for the cell membrane

Answer 9

plasma membrane

Question 10

what is the protoplasm

Answer 10

all the living parts of a cell

Question 11

what is the cell membrane

Answer 11

surrounds the cell allows substances in and out

Question 12

what is the nucleus

Answer 12

holds dna and is the control centre

Question 13

what does cytopalsm do

Answer 13

where reactions happen

Question 14

draw a plant cell under the light microscope

Answer 14

must include
nucleus
cell membrane
cell wall
vacuole
cytoplasme
chloroplast

Question 15

what is the cell wall made of

Answer 15

cellulose

Question 16

what does the cell wall do

Answer 16

gives the cell strength

Question 17

what does the vacuole do and what is it made of

Answer 17

contain a fluid called cell sap they are used to give the cell strength, shape and also store materials

Question 18

what does chloroplasts do

Answer 18

where photosynthesis takes place

Question 19

what is ultra structure

Answer 19

the fine detail of a cell seen with an electron microscope

Question 20

draw the ultrastructure of an animal cell

Answer 20

must include
ribosomes
cytoplasm
plasma membrane
mitchondrion
chromatin
nuclear membrane
nuclear pores

Question 21

draw the ultrastructure of a plant cell

Answer 21

must include
cell wall
mitochondrion
plasma membrane
vacuole
ribosomes
chloroplast
cytoplasm
nuclear membrane
chromatin
nuclear pore

Question 22

draw a phospholipid bilayer

Answer 22

must include
phosphate head
lipid tail
protein
pore

Question 23

what are cell membranes composed of

Answer 23

phospholipids and proteins

Question 24

what are phospholipids made off

Answer 24

phospate head lipid tail

Question 25

how are phospholipids arranged

Answer 25

into double layers (bilayers)

Question 26

what are the functions of a cell membrane (3)

Answer 26

1. retains the cells contents 2. controls what enters and leaves the cell (selectively permeable) 3. they give support to the cell

Question 27

draw the nucleus

Answer 27

must include nuclear pore nucleolus chromatin double nuclear membrane

Question 28

what are the functions of the nucleus (2)

Answer 28

the control centre of the cell contains the cells genetic information

Question 29

what does the double membrane do

Answer 29

controls the movement of substances

Question 30

what does the nucleolus contain

Answer 30

RNA, DNA and proteins

Question 31

where are ribosomes made

Answer 31

nucleolus but function when released into cytoplasm

Question 32

what is chromatin composed of

Answer 32

dna and protein

Question 33

draw a mitochondia

Answer 33

must include outer membrane inner membrane foldings if it is active or inactive

Question 34

what does a mitochondria do

Answer 34

supply energy to the cell in a procss known as respiration

Question 35

what two organelles have dna besides the nucleus

Answer 35

mitocondria chloroplast

Question 36

draw a chloroplast

Answer 36

must include grana thylakoid stroma DNA inner membrane outer membrane starch grain

Question 37

what is the purpose of the chloroplast

Answer 37

where photosynthesis takes place

Question 38

what does the thylakoid contain

Answer 38

chlorophyll

Question 39

what are ribosomes made of

Answer 39

protein and RNA

Question 40

what are ribosomes functions

Answer 40

to make protein

Question 41

what is prokaryotic

Answer 41

organisms whose cells dont have a nucleus or membrane enclosed organelles

Question 42

what is eukaryotes

Answer 42

organisms whose cells do have a nucleus and membrane enclosed organism