Biology CP Chpt. 1
Living Thing- organism
species- organisms of a certain type
What we study about organisms
1) Evolution- species change over time- those species with traits favorable to the environment survive- Such traits are called adaptations. Organisms with these traits have adapted to the environment.
2) Reproduction
inheritance- passing on traits
DNA - chemical that has genetic information
Gene- a section of DNA that has the info for a trait
Offspring- New organisms produced by the parents
Sexual Reproduction- offspring has new combination of DNA - new organism
Asexual reproduction- offspring with same DNA as parent- clone
Reproduction is not needed for the survival of individuals but is needed for survival of species
3) Development- the changes that occur as organisms goes from one cell to mature adult (capable of reproduction)
4) Structure and Function
Anatomy and physiology
Form Follows Function-
Organisms are made of cells- unicellular or multicellular organisms
5) Growth by assimilation- take in materials from environment and change them into the own cellular material
6) Energy Use-
All organisms use energy
Autotrophs get energy from the environment and convert it into a useful form (make food)
Heterotrophs- eat food made by autotrophs
Most autotrophs capture light energy using the process photosynthesis
Some food is used to make needed chemicals or make and repair cells- some is "burned" to release the energy for the organism to use. (Respiration)
The total of the chemical processes of an organism is called its metabolism.
7) Stimulus / response : organisms respond to changes in the environment
Complex responses are called behavior Cold---> shiver---> put on coat
Many responses are designed to keep the organism in balance with the environment- this is called maintaining homeostasis
8) Ecology - the study of the relationship between organisms and their environment.
OTHER STUFF
hypothesis
Controlled Exp - Double blind exp / placebo (See other sheet)
Microscope- Go over lab sheet