Extra

Question 1

Variation is caused by 2 factors

Answer 1

Inherited
The are passed down from out parents

Environmental
Feautures that are affected by the surroundings

Question 2

4 characteristics that cant be environmental

Answer 2

Blood type
Natural hair colour
Natural eye colour
Some diseases

Question 3

There are 2 types of variation

Answer 3

Continuous
Change gradually
Caused by either or both
Histogram or line graph

Discontinuous
You inly have a few options 
Eg blood type 
Usually caused by one or 2 inherited genes 
Have it or you dont 
Discontinuous data 
Bar graphs

Question 4

Cell membrane

Answer 4

Partially permeable
Controls entry and exit of molecules into cell
, inside cell wall

Question 5

Slime capsule

Answer 5

Helps prevent attcaks by the immune system and antibiotics

Protective layer

Question 6

Protein coat

Answer 6

Outer layer that helps to protect the dna and rna

Involved with entry into host cells

Question 7

Flagelllum

Answer 7

Allows movement of the cell

Question 8

Spore

Answer 8

Used in asexual reproduction of the microorganism

Are clones ,spread by wind , water and animals

Question 9

Cell wall

Answer 9

Fully permeable to molecules

Question 10

Sporangium

Answer 10

Contains spores

Question 11

Dna

Answer 11

Genetic material

Found freebin the cytoplasm or in the nucleus of a cell

Question 12

Cytoplasm

Answer 12

Where cellular reactions occur

Question 13

Mitochondria

Answer 13

Site of respiration

Question 14

Microorganism

Answer 14

An organism so small that the human eye cant see it

Question 15

Why can bacteria and fungi grow on agar jelly

Answer 15

Micro organism need food , water , and a suitable environment in order to grow and survive and grow
Agat gives them this

Question 16

Why was the bench disinfected with detox before the experiment

Answer 16

To reduce any chances of contamination

Question 17

Why were the windows kept closed

Answer 17

To reduce any chance of contamination

Question 18

Antiseptic

Answer 18

A substance that prevents or slows down the growth of micro organisms
Applied to the body

Question 19

Disinfectant

Answer 19

A substance that destroys micro organisms living on a surface

Question 20

Antibiotic

Answer 20

A medicine that inhibits the growth of or destroys bacteria

Question 21

What steps did you take that contributes to aeseptic techinque

Answer 21

Wipe down the desk
No extra unneeded bacteria

Tweezer in a bunsen burner on a roaring glame
Any bacteria that us kn the tweezer will be removes

Change cotyon bud ehen you change substances
No cross contamination

Tape the petri dish
No particles in the air can go into your petri dish

Question 22

Salmonella

Answer 22

Bacteria

Question 23

Hiv

Answer 23

Virus

Question 24

Influenza

Answer 24

Virus

Question 25

Tuberculosis

Answer 25

Bacterium

Question 26

Ringworm

Answer 26

Fungus

Question 27

Dysentery

Answer 27

Bacteria

Question 28

What do micro organisms need to grow

Answer 28

Correct conditions Rught temperature Nutrients Water and oxygen

Question 29

How do we preserve food

Answer 29

High temperature prevents decay Lack of ocygen Lack of water

Question 30

How do bacteria reproduce

Answer 30

Binary fission | Alows the; ro multiply quckly

Question 31

What happens when food spoils

Answer 31

Bacteria and fungi secrete enzymes Break down food faster Simple nutrients Can be absorbed bia diffusion

Question 32

What stops things like packet food from going off

Answer 32

Lack of water | Onlya little oxygen

Question 33

Vacuum packing

Answer 33

Vacuum extracts oxyegen nothing can grow

Question 34

How do fungi reprroduce

Answer 34

Yeast is a micro fungi Produced asexually Produce a bud The fungi grows a new part of its which eventually breaks off this is a new organism Spores Spores are formed by fungi and released to create new fungi

Question 35

Pathogens

Answer 35

Micro organism that causes disease | All different tyoes of micro organism can be a pathogen