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Biology Ol Edexcel > Variety Of Living Organism and Cell Structure And Level Of Organisation > Flashcards

Variety Of Living Organism and Cell Structure And Level Of Organisation Flashcards

1
Q

Difference between prokaryotic and eukaryotic

A

Prokaryotic:
Nucleus absent
Circular chromosome of dna
Unicellular
Eukorytic:Nucleus present
More than one chromosome
Unicellular or multicellular

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2
Q

What are 8 characteristics of living organism

A

Respiration
Growth
Nutrition
Excertion
Movment
Control
Reproduction
Sensitivity

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3
Q

Respiration

A

Chemical breakdown of food to release energy

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4
Q

Movment

A

Ability to change position or place

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5
Q

Sensitivity

A

The ability to detect and respond to change in environment

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6
Q

Excretion

A

Getting rid of metabolic wastes

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7
Q

Growth

A

A permant increase in size

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8
Q

Nutrition

A

Intake of food for energy

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9
Q

Control

A

Maintain balanced internal environment

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10
Q

Reproduction

A

Produce an offspring

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11
Q

Function of mitochondria

A

Site of aerobic respiration (synthesis of atp)

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12
Q

Cytoplasm

A

Jelly like material where chemical reactor occur

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13
Q

Cell membrane

A

Controls movment of substances in and out cell

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14
Q

Ribosome

A

Synthesis of protein

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15
Q

Permant vaccuole

A

Filled cell sap store dissolved sugar,mineral ions

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16
Q

Cellwall

A

Tough material help plant cell to keep turgid

17
Q

Chloroplast

A

Synthesis of photosynthesis and has chlorophyll that trap light

18
Q

Nucleus

A

Has dna that carry genetic information and control cell activities like protein synthesis and cell division

19
Q

Rough endoplasmic reticulum

A

Essitienal compoment of synthesis and transport of protien

20
Q

Characteristics of plant cell

A

1.multicelluar organism
2. Store carbohydrates as starch
3.cell wall made of cellulose
4.chloropast (site of photosynthesis)
5.large vaccuole
6.irregular in shape

21
Q

Characteristics of animals

A

1.Multicellular organism
2.no chloroplast (cannot carry out photosynthesis
3.no cell wall
4.store carbohydrates as glycogen
5.small vaccuole
6.regular in shape

22
Q

Characteristics of fungi

A

1.chitin cell wall
2.organised into mycelium made from thread like structure (hyphae)
3.feed by extracellular secretion of digestive enzymes and produce organic products
4.store carbohydrates as glycogen
Cannot carry out photosynthesis
5.some single celled like yeast

23
Q

What meant by saptrophic nutrition

A

Feed by extracellular secretion of digestive enzyme and produce organic product

24
Q

Characteristics of bacteria

A

1.single celled micro organism
2.cell wall made of murien
3.nucleus absent,contain chromosome of dna
4.cell membrane,cytoplasm,plasmid,capsule,fllagelum
5.some bacteria can carry out photosynthesis but most feed on living organism

25
Q

Example of bacteria disease and what it cause and describe it

A

Pneumoccus cause pneumonia and its spherical bacteria act as pathogen

26
Q

Describe lactobacillus bulgaricus and what is usage

A

Its rod shaped bacteria product yogurt from milk

27
Q

Definition of organelle

A

Part of cell with specific function

28
Q

Cells

A

Structural and functional unit of living organism

29
Q

Tissues

A

Group cells with similar structure work together

30
Q

Organ

A

Group of different tissues work together to preform specific function

31
Q

Organ system

A

Group of organs with related functions work together to preform body function

32
Q

Levels of organisation

A

Organelle then cell then tissue then organ then organ system then organism

33
Q

What is meant by pathogen

A

Organism causes a disease (bacteria,virus,fungi,protoctists)

34
Q

Characteristics of virus

A

1.non living organism
2.reproduce inside host cell
3.dont grow,excrete, move, eat
4.smaller than bacteria
5.no cellular structure but protein coat,one type of nuclic acid dna or rna
6.parastic (infect any type of organism)

35
Q

Examples of virus and what it cause

A

Tobacco mosaic cause discolour leaves
Infleunza cause flu
Hiv cause aids

36
Q

Characteristics 0f protoctists

A

1.single celled organism
2.plant cell structure like amoeba
3.animal cell structure like amoeba

Biology Ol Edexcel (19 decks)

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