Download Campbell Biology: Concepts & Connections (7th Edition) by Jane B. Reece, Martha R. Taylor, Eric J. Simon, Jean L. PDF

By Jane B. Reece, Martha R. Taylor, Eric J. Simon, Jean L. Dickey

Campbell Biology: ideas & Connections, 7th Edition–always exact, constantly present, and constantly the main pedagogically leading edge non-majors biology textual content. This bestselling textual content has gone through an in depth revision to make biology much more approachable with elevated use of analogies, genuine international examples, and extra conversational language. utilizing over 2 hundred new MasteringBiology actions that have been written by way of the dynamic writer group, your scholars arrive for sophistication ready. The booklet and MasteringBiology jointly create the study room event that you simply imagined on your wildest goals.

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Extra info for Campbell Biology: Concepts & Connections (7th Edition)

Example text

All organisms are composed of cells. They occur singly as a great variety of unicellular (single-celled) organisms, such as amoebas and most bacteria. And cells are the subunits that make up multicellular organisms, such as lemurs and trees. Your body consists of trillions of cells of many different kinds. All cells share many characteristics. For example, every cell is enclosed by a membrane that regulates the passage of materials between the cell and its surroundings. And every cell uses DNA as its genetic information.

There are two basic types of cells. 5 billion years of life on Earth. 1 billion years ago. 3 shows these two types of cells as artificially colored photographs taken with an electron microscope. A prokaryotic cell is much simpler and usually much smaller than a eukaryotic cell. The cells of the microorganisms we call bacteria are prokaryotic. Plants, animals, fungi, and protists are all composed of eukaryotic cells. 3, a eukaryotic cell is subdivided by membranes into many functional compartments, called organelles.

Inherited information in the form of DNA controls the pattern of growth and development of all organisms, including this hatching crocodile. (4) Energy processing. When this bear eats its catch, it will use the chemical energy stored in the fish to power its own activities and chemical reactions. (5) Response to the environment. All organisms respond to environmental stimuli. This Venus flytrap closed its trap rapidly in response to the stimulus of a damselfly landing on it. (6) Regulation. Many types of mechanisms regulate an organism’s internal environment, keeping it within limits that sustain life.

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