Variety Of Living Organism and Cell Structure And Level Of Organisation

Question 1

Difference between prokaryotic and eukaryotic

Answer 1

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

Question 2

What are 8 characteristics of living organism

Answer 2

Respiration
Growth
Nutrition
Excertion
Movment
Control
Reproduction
Sensitivity

Question 3

Respiration

Answer 3

Chemical breakdown of food to release energy

Question 4

Movment

Answer 4

Ability to change position or place

Question 5

Sensitivity

Answer 5

The ability to detect and respond to change in environment

Question 6

Excretion

Answer 6

Getting rid of metabolic wastes

Question 7

Growth

Answer 7

A permant increase in size

Question 8

Nutrition

Answer 8

Intake of food for energy

Question 9

Control

Answer 9

Maintain balanced internal environment

Question 10

Reproduction

Answer 10

Produce an offspring

Question 11

Function of mitochondria

Answer 11

Site of aerobic respiration (synthesis of atp)

Question 12

Cytoplasm

Answer 12

Jelly like material where chemical reactor occur

Question 13

Cell membrane

Answer 13

Controls movment of substances in and out cell

Question 14

Ribosome

Answer 14

Synthesis of protein

Question 15

Permant vaccuole

Answer 15

Filled cell sap store dissolved sugar,mineral ions

Question 16

Cellwall

Answer 16

Tough material help plant cell to keep turgid

Question 17

Chloroplast

Answer 17

Synthesis of photosynthesis and has chlorophyll that trap light

Question 18

Nucleus

Answer 18

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

Question 19

Rough endoplasmic reticulum

Answer 19

Essitienal compoment of synthesis and transport of protien

Question 20

Characteristics of plant cell

Answer 20

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

Question 21

Characteristics of animals

Answer 21

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

Question 22

Characteristics of fungi

Answer 22

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

Question 23

What meant by saptrophic nutrition

Answer 23

Feed by extracellular secretion of digestive enzyme and produce organic product

Question 24

Characteristics of bacteria

Answer 24

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

Question 25

Example of bacteria disease and what it cause and describe it

Answer 25

Pneumoccus cause pneumonia and its spherical bacteria act as pathogen

Question 26

Describe lactobacillus bulgaricus and what is usage

Answer 26

Its rod shaped bacteria product yogurt from milk

Question 27

Definition of organelle

Answer 27

Part of cell with specific function

Question 28

Cells

Answer 28

Structural and functional unit of living organism

Question 29

Tissues

Answer 29

Group cells with similar structure work together

Question 30

Organ

Answer 30

Group of different tissues work together to preform specific function

Question 31

Organ system

Answer 31

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

Question 32

Levels of organisation

Answer 32

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

Question 33

What is meant by pathogen

Answer 33

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

Question 34

Characteristics of virus

Answer 34

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)

Question 35

Examples of virus and what it cause

Answer 35

Tobacco mosaic cause discolour leaves Infleunza cause flu Hiv cause aids

Question 36

Characteristics 0f protoctists

Answer 36

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