An eleven-question quiz asking students to identify active and passive voice in sentences. Percentage grades and correct answers are displayed once answers are submitted.

A good resource that clearly outlines the differences, uses, and purposes of the active and passive voice, both in writing and in verb construction. Includes charts and examples. Click through all the sub-topics for the complete...

Explains what active and passive continental margins are and where they can be found. Includes a world map showing their locations.

The cell membrane is one of the great multi-taskers of biology. It provides structure for the cell, protects cytosolic contents from the environment, and allows cells to act as specialized units. Learn how the membrane functions to...

Learn more about active and passive voice by changing the passive voice sentences into active voice.

Test your knowledge of active and passive voice by changing the passive voice sentences into active voice.

Test your knowledge of active and passive voice by changing the passive voice sentences into active voice.

Learn about active and passive voice and practice changing passive voice sentences into active voice.

Learn the difference between active and passive voice as well as several way to change passive sentences into active voice.

Learn more about active and passive voice by changing the active voice sentences into passive voice.

A brief but clear explanation of passive and active transport. Examples are provided to further enhance clarity of the concepts.

Choose the chapter called "Active and Passive Transport" from the table of contents for explanations, comparisons, and examples of active and passive transport. This includes an illustrative diagram.

This is a short article that makes good points about the passive voice, with examples in Bulgarian and English.

This quick reference page explains the different types of passive transport in cells.

Learn about membrane permeability and facilitated diffusion (including channels and carrier proteins).

Determine if each of these ten sentences is written in active voice or in passive voice. Answers are provided.

Explanations and examples of active and passive voices. Links to additional information, examples and a quiz are also available.

Cell transport can be active or passive. The two forms are described here and their differences highlighted.

Explanation of cell membranes and the way selective materials may move through them.

This cellular biology page presents extensive detail on the chemical nature of the cell membrane. Using the Chime plug-in, students can manipulate and study models of the membrane.

Discusses different features that can be incorporated into a home's design in order to harness solar energy.

This lesson introduces the process of passive transport, explaining that it is a form of transport that does not require energy, and moves molecules down their concentration gradient. It is 3 of 4 in the series titled "Passive Transport."

This lesson introduces the process of passive transport, explaining that it is a form of transport that does not require energy, and moves molecules down their concentration gradient. It is 4 of 4 in the series titled "Passive Transport."

This lesson introduces the process of passive transport, explaining that it is a form of transport that does not require energy, and moves molecules down their concentration gradient. It is 1 of 4 in the series titled "Passive Transport."