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Life Science Chapter 1 Flashcards
Organism
A living thing
Something that has all of the characteristics of life
Cell
The basic unit of life
Unicellular
An organism that is made up of 1 cell
Multicellular
Organisms that are made up of more than one cell
Homeostasis
The ability of an organism to keep internal conditions stable, no matter what is changing in the environment
What are the characteristics of life?
Response to stimuli Homeostasis
Reproduction
Organized
Use energy
Grow and develop
Adapt and evolve
What is organization?
Parts do specific jobs to make the whole organism work Atomsorganisms
What is growth? What is development?
Growth=getting bigger
Development=changes that happen during lifetime
What is reproduction?
Making babies
What is stimulus? What is a response?
Stimulus=something that causes a response Ball thrown
Response=the reaction Blinked
Where does all energy ultimately come from?
The sun Even meat-Animal ate animals that ate plants that got their energy
from the sun
Binomial nomenclature
2-word naming system for organisms
Species
Closely related organisms that can mate and have fertile offspring
Genus
Closely related species
Dichotomous Key
Tool for identifying organisms 2 options
Cladogram
Branching diagram showing evolutionary relationships between organisms
Parts of scientific name
Genus species
6 Kingdoms
Animalia
Plantae
Fungi
Protista
Archaea
Bacteria
3 Domains
Eukarya (Animalia, Plantae, Fungi, Protista)
Bacteria (Bacteria)
Archaea (Archaea)
Why use scientific names?
Universal names
Avoids confusion over organisms
Very specific
Why is Carolus Linnaeus important?
Kingdoms
Binomial nomenclature
Classification levels
Domain
Kingdom
Phylum
Class
Order
Family
Genus
Species
Scientific names of humans and favorite animal-Write correctly
Homo sapiens
Dracorex hogwartsia
3 Rules for Scientific Names
1. 1st word capitalized
2. 2nd word lowercase
3. Both names underlined