Levels of organisation Flashcards
what are the levels in order
cell, tissue, organ, organ systems, organisms
what is a cell
smallest building block of an organism
what are tissues made of
a group of specialised cells working together
what are organs made of
a group of tissues working together
what is an organ system made of
a group of organs working together
what is a multicellular organism made of
a group of organ systems working together
name an organ system
circulatory system
gas exchange system
digestive system
name a tissue
nervous tissue
animal tissue
xylem
What is the role of the digestive system
break down and absorb food molecules
what is the role of the gas exchange system
take in oxygen and remove carbon dioxide
what is the role of the circulatory system
transport substances around the body in the blood
