Nature And Variety Of Living Organisms And Biological Molecules

Front 1

Name the 5 levels of organisation in the human body

Back 1

Cells
Tissues
Organs
System
Organism

Front 2

Describe the features of a protoctist

Back 2

Microscopic
Some features like animal cell, some like plants
They're pathogenic

Front 3

Describe the features of a virus

Back 3

Small particles
Parasitic, can only reproduce inside other cells
Infect every type of living organism
Variety of shapes
Not made of cells but have protein coat and contain DNA/RNA

Front 4

Describe the key features of fungi

Back 4

Do not carry out photosyn.
Body in myecelium made from hyphae
Cell walls made out of chitin
Feed by secreting enzymes onto food which break it down and they can absorb the products (saprotropic nutrition)
Store carbohydrates as glycogen

Front 5

Why do we need repeats?

Back 5

Reduces the effects of anomalous readings

Front 6

How do you improve accuracy?

Back 6

More readings around the optimum

Front 7

Label A, B and C

Back 7

A; fungal spore
B; spore case
C; hyphae

Front 8

3 differences between plant and animal cells

Back 8

Plant
Has cell wall, large vacuole, chloroplasts
Animal cell
No cell wall, no vacuole, no choloplasts

Front 9

Key features of animal

Back 9

Feed off other organisms
Nervous coordination
Can move easily
Carb. stored as glycogen

Front 10

Key features of bacteria

Back 10

Single celled
Lack of nucleus
Feed off other organisms

Front 11

Key features of plant cell

Back 11

Chloroplasts carry out photosyn.
Transport carb as sucrose and store as sucrose/starch
Cell walls made of cellulose

Front 12

Give key features and function of;
nucleus
membrane
cytoplasm
chloroplast
large vacuole
cell wall

Back 12

nucleus; contains DNA, control centre of cell
membrane; selectively permeable, controls enters/leaves
cytoplasm; fills up most of cell, where chem react take place
chloroplast; chlorophyll, photosynthesis
large vacuole; cell sap, provides support/controls water balance of cell
cell wall; cellulose, provides rigid structure

Front 13

Define 'movement'

Back 13

Move towards food/light or away from predators

Front 14

Define 'respiration'

Back 14

release of energy from food

Front 15

Define 'sensitivity'

Back 15

reacting to surroundings

Front 16

Define 'homeostatis'

Back 16

'Keeping conditions the same

Front 17

Define 'growth'

Back 17

Increase in size, greater number of cells

Front 18

Define 'reproduction'

Back 18

To produce offspring and keep species alive

Front 19

Define 'excretion'

Back 19

release of waste products

Front 20

Define 'nutrition'

Back 20

Obtaining the necessary molecules

Front 21

Label A, B, C, D and E

Back 21

A; slime capsule
B; cell wall
C; cell membrane
D; cytoplasm
E; loop of DNA

Front 22

How do plants/animals gain the biological molecules they need?

Back 22

Plants make themselves
Animals eat other living things

Front 23

Describe simple sugars

Back 23

Soluble in water
Sweet tasting
Glucose/maltose
Supply energy

Front 24

Describe complex carbohydrates

Back 24

Very large molecule
Insoluble in water
Storage of carb (starch in plants, glycogen in animals)
Cellulose is in cell walls

Front 25

Why is starch a good storage molecule?

Back 25

Large
Insoluble
Compact
Not reactive

Front 26

Describe lipids

Back 26

Made up of glycerol and fatty acids

Front 27

Functions of lipids

Back 27

Store of energy
Insulation
Protection

Front 28

Describe proteins

Back 28

Made up of amino acids
Order determines shape

Front 29

Functions of proteins

Back 29

Growth and repari
Making enzymes

Front 30

Describe food test for glucose

Back 30

Benedict's solution, heat in water bath, blue-brick red

Front 31

Describe food test for starch

Back 31

Iodine, red/brown -> blue/black