CELL Flashcards
the lowest level of organization of the human body
chemical level
smallest unit of matter
atoms
two or more atoms joined together
molecules
basic unit of life or an organism; a small membrane bound compartment
cell
level where the physiology starts; performs a particular function
tissue level
level where different types of tissues are joined together
organ level
are structures that are composed of two or more different types of tissues
organs
level where a system consisting of related organs with a common function; also known as organ-system level
system level
level where an organism, any living individual, consist of all the parts of the human body functioning together
organismal level
the main cell of our body
stem cell
what are the 2 main parts of the cell
- cell membrane
2. cytoplasm
a phospholipid bilayer with proteins that function as channels and receptors;
main function: permeable boundary between cell and external environment
cell membrane
gelatin-fluid like that lies inside the cell membrane
main function: contains salt, minerals and organic molecules; surround the organelles
cytoplasm
a sphere that contains another sphere nucleolus
main function: storage center of cells DNA; manages cell functions
nucleus
a network of thin, fibrous elements made up of microtubules
main function: acts as a support system for organelles; maintains cell shape
cytoskeleton