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Biology Test1 Review

Review for the first test in biology

TermDefinition
Characteristics of living things 1 Composed of cells, 2 reproduction, 3 growth & developement, 4 obtain & use energy... metabolism, 5 Responds to environment... homeostasis, 6 DNA is the universal Genetic Code, 7 evolutions & adaptations
Level of organization: least complex to most, starting with cell Cell, tissue, organ, organ system, organism
Cell Basic unit of life.
Tissue Group of similar cells.
Organ Structures made of tissues.
Organ System Teams of working organs.
Organism An individual living thing.
Level of organization: least complex to most, starting with population. Population, community, ecosystem, biosphere.
Population Same species living together.
Community Different populations interacting together.
Ecosystem Living communities with non-living elements.
Biosphere All ecosystems on Earth.
What is a macromolecule? A large molecule formed from 1000s of smaller molecules.
List the 4 Macromolecules Carbohydrates, lipids, proteins, and nucleic acids
Carbohydrates molecules, function, and examples Carbon, Hydrogen, Oxygen Quick energy Bread and pasta
Lipids molecules, function, and examples Carbon, Hydrogen, Oxygen Stores long term energy Butter and olive oil
Proteins molecules, function, and examples Carbon, Hydrogen, Oxygen, Nitrogen Provides cell structure, send chemical signals, and helps speed up chemical reactions. Nuts, eggs, and Meat
Nucleic Acids molecules, function, and examples Carbon, Hydrogen, Oxygen, Nitrogen, Phosphates Stores and passes on genetic information DNA & RNA
What is an Enzyme? An Enzyme is a biological catalyst that cells use to speed up chemical reactions within a cell.
How do enzymes speed up chemical reactions? Enzymes speed up chemical reactions by reducing the activation energy.
What is the active site? The active site is where Enzymes bind with substrates.
What does it mean when an enzyme becomes denatured? It means the enzyme had lost its shape and can no longer be used.
What causes and enzyme to become denatured? Heat or pH.
Created by: 29jplanham
 

 



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