1.3 studying life biology = the study of life bios = life | ology = study of
TRANSCRIPT
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1.3 Studying LifeBiology = the study of life
Bios = life | ology = study of
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8 Characteristics
1.The cell - the smallest unit of lifeUnicellular = 1 celled
Multicellular =many celled
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2. Reproduction
Sexual = DNA from 2 different parents
Asexual = single parent (cloning, budding)
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3. Genetic Code – directions for
inheritance (DNA)
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4. Growth and DevelopmentGrowth = getting larger
Development = changing shape and structure
Differentiation = cells look different and perform different functions
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5. Use Energy
Metabolism = chemical reactions in the body
Animals eat to obtain energy
Plants photosynthesize
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6. Response to environment
Stimulus = a signal
Response = a reaction
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7. Internal Balance
Homeostasis – maintaining constant internal
conditions (sameness)
8. Evolution - species change over time
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Branches of Biology
Zoology = animals
Paleontology = ancient life
Cytology = cells
Botany = plants
Entomology = insects
You guess…
Microbiology =
Ecology =
Anthropology =
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Levels of Organization
MoleculeCellTissueOrganOrgan SystemsOrganismsPopulationCommunityEcosystemBiosphere
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CHECK FOR UNDERSTANDING
1. There are _________ characteristics of life
2. The smallest unit of life is the ___________
3. All living things must be able to ____________________, or to make more of their own kind.
4. All living things have a _____________________, which are like instructions for building the body
5. During development, some cells become liver cells, some become skin cells and some become muscle cells. This process is called ________________________
6. Animals get their _______________ by consuming food. Plants get it by __________________________________
7. __________________________ is the maintaining of an internal balance, or sameness
8. ______________________ is the process where species change over time.