Cell is composed of what percentage of chemicals? Of that percentage what chemical is most abundent?
What is the size of an erythrocyte?
what is miniaturization?
Cellular activites that are packed into structural units...either invisible or barely visible to the naked eye
What are the 4 parts to the cell theory??
1) All living organisms are composed of nucleated cells
2)Cells are the fundamental units of life
3)New cells are formed from pre-existing cells by cell division
4)Cells contain hereditary information that is passed from cell to cell during cell division.
What are the 4 types of macromolecules and there functions?
Nucleic acids (genetic code), Proteins (amino acids playa structural and functional role), Carbohydrates (simple sugars that function to store energy or structural components), Lipids (fatty acids) play roles in storage of energy and structural framework of the membrane)
("respond") Function of a cell membrane; respond to a physical or chemical stimulus.
("carry") function of a cell membrane; PROPAGATION
Excitable cells have what two types of life processes?
Irritability and Conductivity
What are the two types of excitable cells?
muscle and neurons have the ability to generate AP's (action potentials) and carry them across the plasma membrane
Changing shape, usually shortening. Cytoskeletal filaments are involved
Act of taking in substances from the environment. May be by diffusion or cellular activity. Function of cell membrane
Extrusion of USEFUL MATERIALS formed by cell. Function of ER and golgi
Extrusion of WASTE PRODUCTS formed by cell. Function of ER and golgi
Food substances and oxygen within the cell interact chemically to produce energy, carbon dioxide, water. Mitochondria are involved
Increase in number of cells by cell division. Nucleus, centrioles, ribosomes play MAJOR ROLES
resident cells gets bigger
Increase number of cells
Condition of equilibrium in the body's internal environment due to the ceaseless interplay of the body's many regulatory processes.....FEEDBACK MECHANISM