Biology 172 Lecture 1
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A living thing is a ______ entity that aquires ______ from its surroundings and is capable of _______ , _________ and _________ with its enviornment
The _____ is the lowest level in the hierarchy of biological organization that can perform _____ of the activities required for life
2 fundamental theories in biology
- Evolutionary theory
- Cell theory
5 characteristics of all living things
- 1. energy acquisition and use
- 2. made of cell
- 3. process hereditary or genetic information
- 4. replication
- 5. evolution
Common properties of living things
- Energy Utilization
- Response to environment
- Evolutionary adaptation
- Growth and Development
Evolutionary theory explains both
the unity and diversity of life
In 1858, Darwin and Wallace proposed ....
that all species are related by descent from a common ancestor
When does Natural Selection occur
when individuals in a population have an advantage in their environment due to a certain heritable trait that allows them to survive better and pass their characteristics to their offspring
Genetic changes occur ________
The Tree of Life
maps the relationship between all living things. The cell theory and the theory of evolution by natrual selection imply that all species are descended from a spingle common ancestor at the root of a family tree of all organisms
Sub-domains of Eukarya
Organisms can be unicellular or multicellular. Archaea are _____, almost all bacterua are _______
__________ cells have a membrane-bound nucleus and __________ cells do not have a membrane-bound nucleus
Prokaryotes include .....
Eukarya include ....
Protists, several groups of unicellular eukaryotes
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