Chapter 1-3 Flashcards
What are the six characteristics of life
Life is organized, life requires materials and energy, living organisms maintain an internal environment, living organisms respond, living organisms reproduce and develop, and living organisms have adaptations
Atoms
1st/ smallest level: atoms join together to form molecules
Molecules
2nd level: they form organelles
Organelles
3rd: parts of a cell that carry out specific functions
Cell
4th: smallest structural and functional unit of an organism
Tissue
5th: group of similar cells that perform particular function
Organ
6th: composed of several tissue types
Organ system
7th: group of organs that work together for a common purpose
Organism
8th: collection of organ systems
Species
9th: a group of interbreeding organisms
Population
10th: the members of one species in a particular area
Community
11th: interacting populations (all living organisms)
Ecosystem
12th: community of populations interacting with the physical environment (community plus nonliving components)
Biosphere
13th: all of the Earth’s ecosystems
What is the ultimate source of energy for nearly all life on Earth
The sun
Energy
The capacity to do work
Metabolism
All chemical reactions occurring in the cell
Homeostasis
Maintenance of internal conditions within certain boundaries
Ways to remain homeostatic
Moving to a warmer area or liver releasing stored sugar
What is the blueprint for the development of all organisms
DNA
Evolution
The process by which populations accumulate adaptations over time to become more suited to their environments
Who is credited with discovering the process of natural selection
Charles Darwin and Alfred Russel Wallace?
Taxonomy
The discipline of naming and classifying organisms according to certain rules
Most inclusive to least inclusive classifications
Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species (Debonair Kings Play Chess On Fine Green Sand)
