B1.1

Question 1

what is eukaryotic cell

Answer 1

contains genetic material in a nucleus, complex, relatively large(10 to 100 micrometers), plant and animal cells, always has nucleus cytoplasm cell membrane mitochondrion.

Question 2

what is prokaryotic cell

Answer 2

no nucleus(genetic material floats in cytoplasm), simple, relatively small(1 to 10 micrometers) bactreium

Question 3

what is in an animal cell

Answer 3

nucleus, cell membrane, mitochondrion, cytoplasm

Question 4

what is in a plant cell

Answer 4

chloroplast, vacuole, cytoplasm, cell wall, nucleus cell membrane, mitochondrion

Question 5

what are the smallest living organism

Answer 5

bacteria

Question 6

what type of structure is bacteria

Answer 6

unicellular

Question 7

what is in a bacterial cell

Answer 7

slime capsule, pili, cytoplasm, genetic material, cell wall, cell membrane, flagella, plasmids

Question 8

what is the order of size out of dna gene nucelotide chromosome and genome

Answer 8

(smallest)
nucleotide
dna
gene
chromosome
genome
(largest)

Question 9

how does a light microscope work

Answer 9

it passes light through an object placed on a slide on a stage then through objective and eyepiece lens.

Question 10

how do you solve a cell being colourless

Answer 10

use a stain

Question 11

what is the formula for total magnification

Answer 11

(eyepiece lens magnification) x (objective lens magnification)

Question 12

how do you use a microscope(light)

Answer 12

1) move stage to lowest position
2)select the objective lens with lowest magnification
3)place the slide(with cells on it) on the stage
4)raise stage to highest position(dont touch slide to lens)
5)lower stage slowly using course focus knob until you see the object(normally blurry)
6)turn fine focus knob slowly until object is clear
7) to see cells in more detail, switch to higher magnification objective lens without moving stage. Use fine focus knob to bring object into clear focus again.

Question 13

what are the things of a light microscope

Answer 13

1.cheap,
2.small/portable
3.sample prep is simple
4.natural colour seen
5.specimens living or dead
6.resolutions up to 0.2 micrometres

Question 14

what are the qualities of an electron microscope

Answer 14

1.expensive
2.large/difficult to move
3.sample prep is complex
4. black/white image shown
5.specimens dead
6.resolution up to 0.1 nanometres

Question 15

what does a transmission electron microscope do

Answer 15

produce more magnified images/ beam of electrons pass through sample

Question 16

what does a scanning electron microscope do

Answer 16

produce 3d image of a surface(beam of electrons across surface of specimen)