Copyright Pearson Prentice Hall Studying Life Photo Credit: © Andrew Syred/Science Photo Library/Photo Researchers, Inc. Copyright Pearson Prentice Hall

Characteristics of Living Things What are some characteristics of living things? Copyright Pearson Prentice Hall

Characteristics of Living Things Living things share the following characteristics: made up of units called cells reproduce based on a universal genetic code grow and develop obtain energy respond to their environment maintains homeostasis evolve over time Copyright Pearson Prentice Hall

Copyright Pearson Prentice Hall Big Ideas in Biology Information and Heredity Genetic code is common, with minor variations, to every organism on Earth. That information, carried in DNA, is copied and passed from parents to offspring. Copyright Pearson Prentice Hall

Copyright Pearson Prentice Hall Big Ideas in Biology Evolution In biology, evolution, or the change in living things through time, explains inherited similarities as well as the diversity of life. Copyright Pearson Prentice Hall

Copyright Pearson Prentice Hall Big Ideas in Biology Homeostasis An organism’s ability to maintain a relatively stable internal environment. Copyright Pearson Prentice Hall

Copyright Pearson Prentice Hall Branches of Biology How can life be studied at different levels? Copyright Pearson Prentice Hall

Copyright Pearson Prentice Hall Branches of Biology Some of the levels at which life can be studied include: molecules cells organs organisms populations communities ecosystems biomes the biosphere Copyright Pearson Prentice Hall

Copyright Pearson Prentice Hall 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 Copyright Pearson Prentice Hall

Copyright Pearson Prentice Hall 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 Copyright Pearson Prentice Hall

Copyright Pearson Prentice Hall Branches of Biology Groups of Cells 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 Copyright Pearson Prentice Hall

Copyright Pearson Prentice Hall Branches of Biology Organism 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 Copyright Pearson Prentice Hall

Copyright Pearson Prentice Hall Branches of Biology Population Group of the SAME organisms 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 Copyright Pearson Prentice Hall

Copyright Pearson Prentice Hall Branches of Biology Community Multiple 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 Copyright Pearson Prentice Hall

Copyright Pearson Prentice Hall Branches of Biology Ecosystem 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 Copyright Pearson Prentice Hall

Copyright Pearson Prentice Hall Biome A group of ecosystems that have the same climate and similar dominant communities Copyright Pearson Prentice Hall

Copyright Pearson Prentice Hall Branches of Biology Biosphere 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. Copyright Pearson Prentice Hall

Copyright Pearson Prentice Hall 1-3 Copyright Pearson Prentice Hall

Copyright Pearson Prentice Hall 1-3 Which of the following is NOT a characteristic of all living things? use of energy made of cells stable internal environment need for oxygen Copyright Pearson Prentice Hall

Copyright Pearson Prentice Hall 1-3 Which of the following are branches in the study of biology? cells, tissues, organs, and organisms botany, cell biology, ecology, and zoology populations, communities, and ecosystems the genetic code, evolution, and the biosphere Copyright Pearson Prentice Hall

Copyright Pearson Prentice Hall 1-3 The genetic code is carried in Water. DNA. proteins. soil. Copyright Pearson Prentice Hall

Copyright Pearson Prentice Hall 1-3 Which of the following shows the levels of organization in correct order from the simplest to the most complex? organisms, cells, populations, molecules, ecosystems ecosystems, populations, organisms, cells, molecules molecules, cells, organisms, populations, ecosystems molecules, organisms, cells, populations, ecosystems Copyright Pearson Prentice Hall

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