the smallest unicellular organisms
bacteria
the basic unit of all living things
cell
the rigid covering around the membrane of a plant cell.
cell wall
the green substance in plants that absorbs sunlight and gives plant cells their green colour
chlorophyll
one of the specialised organelles in plant cells containing chlorophyll.
chloroplast
the liquid part between the nucleus and membrane of a cell.
cytoplasm
the protective covering around a cell
membrane
an instrument with several lenses that makes things look much larger.
microscope
a living thing, like a plant or an animal, made up of a very large number of cells.
multicellular living thing
a specialised brain cell that transmits information
neuron
the part of a cell that coordinates its activities
nucleus
the life process by which living things obtain nutrients and energy from food
nutrition
a group of tissues that join together to carry out a common function
organ
one of the tiny components of a cell that carry out its different functions
organelle
a complete living thing formed of cells, tissues, organs and systems all working together
organism
unicellular organisms, like amoeba, living in water or wet places
protozoa
