1. Introduction to Biology
Essential Questions:
What are the characteristics of life?
How can experiments and observations help inform our understanding of biology?
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2. Biology – The Study of Life
Life arose more than 3.5 billion years ago
First organisms (living things) were single celled
Only life on Earth for millions of years
Organisms changed over time (evolved)
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Fields of Biology
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4. Units of Biology : Biochemistry
Properties of water
Macromolecules
Enzymes
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5. Units of Biology : Cell Biology
Plant and Animal Cell
Cell Membrane
Photosynthesis
Respiration
Plants
Cell Cycle and Mitosis
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6. Units of Biology : Genetics
Meiosis
Human Reproduction
Mendel’s Laws
Protein synthesis
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7. Units of Biology : Evolution
Natural Selection
Theory of Evolution
Classification
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8. Units of Biology : Ecology
Food web
Changes in Ecosystem
Loss of Biodiversity
Human Impact
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9. Units of Biology : Human Physiology
The Brain
Blood Flow
Immune Systems
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What is Life?
How do we know something is living?
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11. 7 Characteristics of Living Things
1. All living things are made of cells.
Cells are the basic unit of life.
2. All living things uses energy.
Energy comes from the sun.
3. All living things respond to stimulus (stimuli- pleural).
Stimulus- change in environment (hot= sweat)
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12. 7 Characteristics of Living Things
4. All living things reproduce.
Sexual or asexual
5. All living things grow and develop.
6. All living things change to fit their environment (adapt).
If not, they risk becoming extinct.
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13. 7 Characteristics of Living Things
7. All living things have DNA.
DNA provides instructions for making molecules called proteins. Proteins build cells.
DNA carries the genetic material from parent to offspring (heredity).
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