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1-3 Studying Life
Photo Credit: © Andrew Syred/Science Photo Library/Photo Researchers, Inc.
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Branches of Biology
A Few Branches of Biology
Zoologists
Botanists
Paleontologists
Cell Biologists
Geneticists
Microbiologists
Ecologists
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Branches of Biology
How can life be studied at different levels?
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Branches of Biology
Some of the levels at which life can be studied include:
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Branches of Biology
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The part of Earth that contains all ecosystems
Living things may be studied on many different levels. The largest and most complex level is the biosphere. The smallest level is the molecules that make up living things.
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Branches of Biology
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Community and its nonliving surroundings
Living things may be studied on many different levels. The largest and most complex level is the biosphere. The smallest level is the molecules that make up living things.
Hawk, snake, bison, prairie dog, grass, stream, rocks, air
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Branches of Biology
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Populations that live together in a defined area
Living things may be studied on many different levels. The largest and most complex level is the biosphere. The smallest level is the molecules that make up living things.
Hawk, snake, bison, prairie dog, grass
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Branches of Biology
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Group of organisms of one type that live in the same area
Living things may be studied on many different levels. The largest and most complex level is the biosphere. The smallest level is the molecules that make up living things.
Bison herd
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Branches of Biology
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Individual living thing
Living things may be studied on many different levels. The largest and most complex level is the biosphere. The smallest level is the molecules that make up living things.
Bison
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Branches of Biology
Groups of Cells: found only in multicellular organisms
Tissues, organs, and organ systems
Living things may be studied on many different levels. The largest and most complex level is the biosphere. The smallest level is the molecules that make up living things.
Nervous tissue Brain Nervous system
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Branches of Biology
Cells
Smallest functional unit of life
Living things may be studied on many different levels. The largest and most complex level is the biosphere. The smallest level is the molecules that make up living things.
Nerve cell
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Branches of Biology
Molecules
Groups of atoms; smallest unit of most chemical compounds
Living things may be studied on many different levels. The largest and most complex level is the biosphere. The smallest level is the molecules that make up living things.
Water DNA
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13. Biology in Everyday Life
More than any other area of study, biology touches your life every day.
How?
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