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Prokaryotic and eukaryotic cells have different structures, cellular components, and needs for survival. Nevertheless, both cells need to be able to communicate with other cells. Some cells communicate with each other by direct contact, but many send signals to other cells that reach the cells without any contact.

In this section of the textbook, you will learn the types of local and long distance communication cells use to send messages to other cells.

11^th Edition 12^th Edition

Read Concept 11.1

From the table of contents, Click Unit 2 The Cell, then 11 Cell Communication, then Concept 11.1 External signals are converted to responses within…, then Go to Concept 11.1.

As you read, be sure to take notes that will help you review the section’s content later. You may choose to combine these notes with notes from the rest of the section, or you may keep them separate. Any of the topics in the textbook’s chapters may appear on the AP Biology Exam.

After you finish reading the assigned section in the textbook, answer Concept Check 11.1. Then check your answers by consulting Appendix A in your textbook.

Read Concept 11.1

From the table of contents, click Chapter: 11 Cell Communication. Then click 11.1: External signals are converted to responses within the cell.

As you read, be sure to take notes that will help you review the section’s content later. You may choose to combine these notes with notes from the rest of the section, or you may keep them separate. Any of the topics in the textbook’s chapters may appear on the AP Biology Exam.

After you finish reading the assigned section in the textbook, answer Concept Check 11.1. Then check your answers by consulting Appendix A in your textbook.

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