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| 6 characteristices of life |
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growth and development
reproduction
responds to stimulus
come from other living organisms
adapt and evolve
require energy |
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| anything in the internal or external environment that causes an orginism to responed |
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| an organims reaction to a change in its environment |
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| an increase in the amount of living material |
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| all the changes that take place during the life of an organism |
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| a change in an organism in respones to environmental factors |
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| gradual change in an organism through adaptations |
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1.Observation -noting something no one ever noticed before
2. Hypothesize- A testable explanation to the question
3. Experiment-An investingtion that tests the hypothesize
4.Collecting Data-results must be recoreded and analyzed to see if thet support or disprove the hypothiesis
5.Publising Results- Allows other to review results and provied suggestions
6.Froming a theory-A theory is a hoypothesize that is sipported
7.Developing a new Hypothesize
8.Revise the theory |
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| cells and their processes |
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Definition
organic compound
a compound is a combination of 2 or more atoms
an orginc compound has carbon atoms combined with each other
An inorganic has no carbon atoms
an inorganic has no carbon atoms
The Four Types of Compounds(The Molecules of Life)
Carbohydrates:Surgars used for short term energy
Lipids: Fats and oils used for a long term energy
Proteins:Made up of amino acids; used for construction material and chemical reaction in the body
Enzymes:Special types of proteins that speed up chemical but are not change by the reactions
Nucleic acids: DNA and RNA; contains genetic information |
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6CO2+6H2O+light energy - C6H12O6+602
Process by which orginisms use energy from sunlight to make their own food (glucose)
Glucose is a simple sugar
Photosynthesis occurs in the choiroplasts of plant cells and some bacteria
Chioroplasta have a green pigment called chlorophyll |
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1.Light reaction: chlorophyll in the chioroplasts absorbs sunlight
2. Dark reation: The energy from the sunlight is used to make glucose
Light energy is completely changed into chemical energy (glucose) |
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Process that breaks down glucose in order to make energy for an organism
ATP: compounds that stores energy in an organism
Occurs in the mitochondria of the cells
Two types of cellular repiriration
Aerobic respiration: requries oxygen to ocur
Mostly happen in animals and plants
Aerobic respiration is the opposite of photosynthesis
There are 3 steps in aerobic resiration
Step 1 is glyoclysis: glucose is cut in half
Step 2 is the citric acid cycle:glucose halves get electrons chopped off of them
Step 3 is the electron transport chain:electrons combine with oxygen and are to make a lot of ATP
C6H12O6+O2 6CO+ATP(ENERGY)
Anaerobic respiration:dose not requrie oxygen to occur
Mostly happens in bacteria and yeast
Also called fermintation
Makes less ATP than aerobic respiration |
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Ecology is the study of how organisms fit into their environment
A community is the organisms that live in a particular environmnt
A Habitat is the physical location of aa community
A ecosystem is a collection of orgainisams and their physical environment
The diversity of an ecosystem is a measure of the number of species living there
There are different feeding groups of organisms
Autotrophs:organisms that cannot make their own food, like - Herbivores:Eat Plants -Carnivores: Eat meat- Oninivores-Eat plants and meat
There are different factors in an ecosystem
Abiotic factors are notliving things
Biotic factors are living things,such as
Producers:organisms that take in energy from their surroundings to make their own food
Consomers:organisms that eat other organisms for energy
Decomposers:Special types of comsumers that eats waste products and dead organisms for energy |
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1st level is usully producers
2ed level is primarly consumers
3rd level is secondary consumer
4th level is tertiary consumer
last level is a decomposer |
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nitrgen in the atmosphere is taken by bacteria that live in plants roots
The nitrgen is passed onto the plants and any animals that eat the plants
Once the plant or animal has died, decomposers (bacteria) again take up the nitrogen in the dead material and send it back to the atmophere |
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carbon dioxide from the atmostphere is taken in by plants who use during photosynthisis and release oxygen back into the atmostphere
Oxygen in the atmostphere is taken in by animals and plants who use it during respiration and release carbon dioxide back into the atmostphere |
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