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Cards In This Set
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What are the 5 basic characteristics of life?
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1. Living things take in energy and
materials.
2. Living things sense and respond to
changes in the environment.
3. Living things reproduce and grow.
4. Living things consist of one or more
cells.
5. Living things maintain homeostasis.
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Describe the general pattern of energy flow through Earth's life forms, and explain how Earth's resources are used again and again.
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Energy flows into the biosphere from the sun
- Plants ("producers") trap this energy by
photosynthesis.
- Animals ("consumers") feed on the stored
energy in plants, using cellular respiration.
- Bacteria and fungi ("decomposers") break
down the molecules or other organisms in
order to recycle raw materials.
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What is a cell?
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The smallest living unit; an organized unit that can survive and reproduce on its own, using energy, the required raw materials, and instructions in the DNA.
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What is homeostatis?
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It means "staying the same". It is a state of chemical and physical stability inside the body that must be maintained in order for individual cells, and the whole body, to stay alive.
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What is evolution?
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It means change in the body plan and functioning or organisms through the generations.
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What are primates?
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They are a type of mammal.
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What is a vertebrate?
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It's an animal having a backbone of bony segments, the vertebrae.
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Name some distinctive features that set humans apart from other complex animals due to evolution.
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- Sophisticated verbal skills
- Analytical abilities
- Exceptionally complex social behavior
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What is a biosphere?
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This is the most inclusive level of life's organization. This term refers to all parts of Earth's waters, crust, and atmosphere in which organisms live.
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List the levels of organization in nature in order.
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1. Atom
2. Molecule
3. Cell
4. Tissue
5. Organ
6. Organ system
7. Multicellular orgnism
8. Population
9. Community
10. Ecosystem
11. The biosphere
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What is a scientific method?
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A systematic way of gathering knowledge about the natural world.
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List the common steps in the scientific method in order.
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1. Observe some aspect of nature.
2. Ask a question about the observation or
identify a problem to explore.
3. Develop a hypothesis.
4. Make a prediction.
5. Test the prediction.
6. Repeat the tests or develop new ones.
7. Analyze and report the test results and
conclusions.
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What is a hypothesis?
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It is a proposed explanation for an observation or how some natural process works.
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What is a controlled experiment?
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An experiment that would test only a single prediction of a hypothesis at a time?
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What is a variable?
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It is a factor that can change with time or in different circumstances. In a scientific experiment, the only factor that is not the same in the experimental group as it is in the control group.
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