Slide 1 of 45 Copyright Pearson Prentice Hall Biology

Slide 2 of 45 Copyright Pearson Prentice Hall 1-3 Studying Life

Slide 3 of 45 Copyright Pearson Prentice Hall Characteristics of Living Things 1. Living things are made up of cells. A cell is the smallest unit of an organism that can be considered alive.

1-3 Studying Life Slide 4 of 45 Copyright Pearson Prentice Hall Characteristics of Living Things 2. Living things reproduce. sexual reproduction, cells from two different parents unite to form the first cell of the new organism. asexual reproduction, a single parent produces offspring that are identical to itself.

1-3 Studying Life Slide 5 of 45 Copyright Pearson Prentice Hall Characteristics of Living Things 3. Living things grow and develop. During an organism’s development, cells differentiate, which means that the cells look different from one another and perform different functions.

1-3 Studying Life Slide 6 of 45 Copyright Pearson Prentice Hall Characteristics of Living Things 4. Living things are based on a universal genetic code. Organisms store the information they need to live, grow, and reproduce in a genetic code in a molecule called DNA.

1-3 Studying Life Slide 7 of 45 Copyright Pearson Prentice Hall Characteristics of Living Things 5. Living things obtain materials and use energy. The combination of chemical reactions through which an organism builds up or breaks down materials is called metabolism.

1-3 Studying Life Slide 8 of 45 Copyright Pearson Prentice Hall Characteristics of Living Things 6. Living things respond to their environment. A stimulus is a signal to which an organism responds.

1-3 Studying Life Slide 9 of 45 Copyright Pearson Prentice Hall Characteristics of Living Things 7. Living things maintain a stable internal environment. This process is called homeostasis.

1-3 Studying Life Slide 10 of 45 Copyright Pearson Prentice Hall Characteristics of Living Things 8. Taken as a group, livings things change over time. Over many generations, groups of organisms typically evolve.

1-3 Studying Life Slide 11 of 45 Copyright Pearson Prentice Hall Big Ideas in Biology 1. Science as a Way of Knowing 2. Interdependence in Nature 3. Matter and Energy 4. Cellular Basis of Life 5. Information and Heredity

Slide 12 of 45 Copyright Pearson Prentice Hall 6. Unity and Diversity 7. Evolution 8. Structure and Function 9. Homeostasis

1-3 Studying Life Slide 13 of 45 Copyright Pearson Prentice Hall Big Ideas in Biology Science, Technology, and Society Science seeks to provide useful information, but only a public that truly understands science and how it works can determine how that information should be applied.

1-3 Studying Life Slide 14 of 45 Copyright Pearson Prentice Hall Branches of Biology There are many branches of biology. For example: Zoologists study animals. Botanists study plants. Paleontologists study ancient life.

1-3 Studying Life Slide 15 of 45 Copyright Pearson Prentice Hall Branches of Biology Some of the levels at which life can be studied include: molecules cells organisms populations of a single kind of organism communities of different organisms in an area the biosphere

1-3 Studying Life Slide 16 of 45 Copyright Pearson Prentice Hall Branches of Biology Biosphere The part of Earth that contains all ecosystems

1-3 Studying Life Slide 17 of 45 Copyright Pearson Prentice Hall Branches of Biology Ecosystem Community and its nonliving surroundings Hawk, snake, bison, prairie dog, grass, stream, rocks, air

1-3 Studying Life Slide 18 of 45 Copyright Pearson Prentice Hall Branches of Biology Community Populations that live together in a defined area Hawk, snake, bison, prairie dog, grass

1-3 Studying Life Slide 19 of 45 Copyright Pearson Prentice Hall Branches of Biology Population Group of organisms of one type that live in the same area Bison herd

1-3 Studying Life Slide 20 of 45 Copyright Pearson Prentice Hall Branches of Biology Organism Individual living thing Bison

1-3 Studying Life Slide 21 of 45 Copyright Pearson Prentice Hall Branches of Biology Groups of Cells Tissues, organs, and organ systems Nervous tissue Brain Nervous system

1-3 Studying Life Slide 22 of 45 Copyright Pearson Prentice Hall Branches of Biology Cells Smallest functional unit of life Nerve cell

1-3 Studying Life Slide 23 of 45 Copyright Pearson Prentice Hall Branches of Biology Molecules Groups of atoms; smallest unit of most chemical compounds Water DNA

1-3 Studying Life Slide 24 of 45 Copyright Pearson Prentice Hall Biology in Everyday Life Biology affects all aspects of your life

END OF SECTION