Cell - smallest structural and functional unit of an organism, eg. muscle cell
Tissue - group of cells with a similar structure and function, eg. muscle tissue
Organ - aggregation (group) of tissues performing specific functions, eg. stomach
Organ system - group of organs performing specific functions, eg. digestive system
Rewrite these in the correct order, from smallest to largest: brain, neurone, dog, nervous system, nerve. (1) Neurone(cell) → nerve (tissue) → brain (organ) → nervoussystem (organsystem) → dog (organism
why is this statement wrong?
“The nucleus of a cell is an organ.”
The nucleus is a sub-cellular structure (an organelle), not an organ
why is this statement wrong?
“Food passes through the liver and pancreas in the digestive system.”
These organs can be thought of as ‘accessory organs’. Food does not pass through them, but they make substances (eg. bile and enzymes) that are released into the small intestine.