Preliminaries- Unit 1 Flashcards
Preliminaries
Biology
Systematic Study of Life
Emergent Property
Unpredictable sum of the lower levels. Product doesn’t appear in the bases
Organization level of life
- Atom
- Molecule
- Cell
- Tissue
- Organ
- Organ System
Molecule
Atoms joined with chemical bonds
Cell
Smallest unit of Life
Tissue
Organized cells that preform a function
Organ
Interacting Tissues
Organ System
Interacting organs that keep cells functioning
Organization level of organisms
- Populations
- Community
- Ecosystem
- Biosphere
Population
Group of individuals of same species at same time
Community
All populations of all species at the same time
Ecosystem
Community interacts with an abiotic environment
Biosphere
All Earth’s regions containing life (only small crust portion)
Life’s Unity Principles
- All organisms require energy and recycle materials
- Organisms sense and respond to change
- Organisms use DNA information to function and reproduce
Energy
Capacity to do work
Nutrients
Substance needed for growth and survival that an organism can’t self reproduce
Producers
Get energy by creating it themselves (photosynthesis and chemosynthesis)
Consumers
Eat organisms waste or remains
Energy circle
Producers harvest energy, get’s into the leaves. Consumers eat the nutrients and decompose back to the producer.
Energy flows one way and all the materials recycle
Homeostasis
keeping conditions in internal environment within a range that cells can tolerate (shiver and sweat)
DNA’s purpose
Guide all metabolic activities- growth, development, and reproduction
Inheritance
Passage of DNA from parents
Biodiversity
variation among living organisms
Bacteria
Single cell, DNA not in the nucleus
Bacterium
Singular bacteria that’s part of a large group of single-cells
Eukaryote
Single or multi-celled, DNA in nucleus. (Not all contain nucleus but all do characteristically)
Archaean’s
Single celled, DNA not in nucleus. Resemble bacteria but actually closer to a Eukaryote
Nucleus
Double-membraned sac that usually holds DNA
Plants
Type of Eukaryote- Photosynthetic producer
Fungi
Type of Eukaryote- decomposers