Cell Structure And Levels Of Organisms Flashcards
What are the characteristics of life?
MRS GREN Movement Respiration Sensitivity Growth Reproduction Excretion Nutrition
What are the characteristics of plant cells?
Multicellular
Cells contain chloroplast to photosynthesis
Cells have cellulose cell walls
Store carbohydrates as starch or sucrose
What are the characteristics of an animal cell?
Multicellular DON'T contain chloroplasts NO cell wall Have a nervous system Store carbohydrates as glycogen
What are the characteristics of a fungi cell?
Saprophytic DON'T contain chloroplast Cells join together the form HYPHEA Cell walls made from chitin Store carbohydrates as glycogen Whole network is mycelium
What are the characteristics of a bacteria cell?
Single felled
DON’T have a nucleus contain DNA instead
Some bacteria can rudimentary photosynthesis but most are saprophytes
What are Protista
Everything which doesn't go into a kingdom Most are single celled Amoeba- animal like characteristics Chlorella-plant like characteristics Some (seaweed) are multicellular some are pathogens
What is a pathogen?
Something which causes diseases in humans and animals
What are the characteristics of viruses?
Much smaller than bacteria Not made from cells Totally parasitic ~ reproduce inside host cells Infect every type of living cells Contain DNA or RNA instead of a nucleus
What are the levels of organisms?
Organelles Cells Tissues Organs Organ system Organism
What are organelles?
Within all cells (eg nucleus, chloroplast
Digestive system
Intercellular structure ~ carry out specific function
What are cells?
Plant animal, fungi
Basic structure and function unit from which all biological organisms are made
What are tissues?
A group of soecilit cells, adapt
