Unit 1: Notes 1 Flashcards
what are the characteristics of life?
- all living things have cells.
- reproduce
- grow and develop
- respond to their environment
- obtain and use energy
- contain genetic material
- homeostasis
- Evolve
how did all living things respond to their environment?
by using a stimulus, which is something internal or extern all that causes a change in an organisms
how do all living things obtain and use energy?
by using metabolism, which is all the chemical reactions that happen in the body (break or build molecules)
__________ and ________ ALWAYS WORK TOGETHER
anatomy and physiology
what is anatomy?
describes structures of the body
- their scientific names
- composition
- location
- associated structures
what is physiology
studies the function of each structure individually and in combination
what are the levels of organization?
Atoms, molecules, cells, tissues, organs, organ system, organism
what are atoms?
smallest functional units of matter
what are molecules?
Active chemicals and combinations of Atoms
what are cells
smallest unit of life
what is a tissue
groups of cells that work together
what are organs
two or more tissue types working together
what are organ systems
two or more organs working together
what is an organism
A single individual
name the organs of the integumentary system
skin, hair, sweats glands, nails