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Summary Intro to biology
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Summary Biology (high school)
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Lecture 1Anatomy: study of the structure of the body and its part
- Structure determine function
Physiology: study of the function of these parts; how it work
and interact
**How something is built determine how its function**
Level of organization
All materials (living, non-living) are composed
of chemical
o Chemical: Atom (smallest), Molecules, Macromolecules
o Organelles: aggregates of macromolecules used to carry out a specific
function in the cell
o Cells: basic unit of structure and function in all living things
o Tissues: group of cells that function together
o Organ: group of tissues with specialized function
o Organ system: groups of organs function together
o Organisms: composed of organ system functioning together
Characteristics of life
1. Growth -> increase in body size and size and number of cells
2. Reproduction -> have babies / new offspring
** Virus do not reproduce the same way we think from the traits of normal Reproduction ->
make them non-living**
3. Responsiveness -> BIG ONE -> how we human response to changes -> important to keep us alive
4. Movement -> change in position of the body or a body part; motion of an internal organ
5. Respiration -> release of energy from food -> intake oxygen, release CO2
6. Digestion -> breakdown of food which are then absorbed into blood
7. Circulation -> movement of cells and chemical
8. Excretion -> remove of metabolic wastes
Maintenance of Life
- Water -> we are around ~60% water (depends if male or
female)
o Transport stuff in the body done by the blood
o Required for metabolic process
o Provide environment for internal process
o Regulate body temperature
o Make up intracellular and extracellular fluids
- Heat -> comes from metabolic reaction; mainly from muscle cells
- Pressure -> forced applied to something
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