Characteristic & Classification of Life Flashcards
(38 cards)
Five characteristics of life
Contain one or more cells Reproduction Growth and development Obtain and use energy Respond to environment
Purpose of creating a universal classification system
Every scientist from different parts of the world will know the animal by that name.
Prokaryotes
Does not have a membrane around nucleus
Eukaryotes
Has a membrane around nucleus
Binomial nomenclature
Two name system for writing scientific names
First name: genes (capitalized)
Second name: species (not capitalized)
Texonomy
The science of naming living things
Classification
Assigning animals to different categories based on their similarities.
Levels of classification
Kingdom Phyla Class Order Family Genes Species
Animal kingdom
Eukaryotes
Multicellular
Heterotrophs
Plant kingdom
Eukaryotes
Multicellular
Autotrophs
Three structures plants have that animals do not
Cell wall
Large vacuoles
Chloroplasts
Protists kingdom
Eukaryotes
Unicellular
Heterotrophs & autotrophs
Fungi kingdom
Eukaryotes
Multicellular
Heterotrophs
Eubacteria kingdom
Prokaryote
Unicellular
Autotroph & heterotroph
Archaebacteria kingdom
Prokaryote
Unicellular
Autotrophs & heterotroph
<p>
| Viruses</p>
<p> Parasite Reproduces in host cell</p> <p> Very small Not made of cells</p> <p> Nucleic acid surrounded by protein</p>
Organic compound
Has carbon
Inorganic compounds
Does not have carbon
Four types of organic compounds found in all living things
Carbohydrates
Lipids
Proteins
Nucleic acid
Miller-Urey experiment
Created an early Earth-like atmosphere
Amino acids were found
Offered a reasonable theory to how life is created
Spontaneous generation
The belief that life arose spontaneous from non-living matter
Biogenesis
Creating living things from other living things
Redi experiment
Refutes spontaneous generation
If flies can reach the meat, they’ll ly
Needham experiment
Supports spontaneous generations
Microorganisms reappeared after being killed (boiling chicken broth)
| Are viruses living
NO
does not reproduce by its self
not made of cells
cannot grow on its own
```| decomposers
| heterotrophs which feed on and breaks down dead organisms
| endosymbiosis
the theory that the organelles of eukaryotic organisms where once living organisms.
a large cell engulfs a smaller cell
large cell and small cell begin to cooperate
| Evidence for the endosymbiotic theory
organelles have their own membrane
have their own DNA
can reproduce on their own
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