It is often difficult for students to remember the functions of the cellular organelles because they cannot see, feel, or touch them. Presenting the analogy of the "Cell As A City" helps them realize that each organelle has an essential function. There is also a small section at the bottom of the resource asking the students to recall which cell parts are in a eukaryote, prokaryote, or both.

This worksheet will help your students demonstrate understanding of the concept after a lecture. It could also be used after a traditional organelles lecture, but before you have presented the analogy as a non-graded exercise.

In this 10 minute video Paul Andersen discusses cell communication. He begins by explaining how he communicates with other individuals using various forms of electronic communication. Included in this resource are a worksheet and full transcript of the video.

Transcript added from YouTube subtitles. You can use this to write your own worksheet or quiz.

In this 10 minute video Paul Andersen discusses cell communication. He begins by explaining how he communicates with other individuals using various forms of electronic communication. Included in this resource are a worksheet and full transcript of the video.

Transcript added from YouTube subtitles. You can use this to write your own worksheet or quiz.

Learn about how phospholipids form the cell membrane, and what types of molecules can passively diffuse thorugh the membrane. By William Tsai. . Created by William Tsai.

Learn about the major components that make up our cell membrane and the fluid mosaic model. By William Tsai.

Learn about the different types of proteins that exist on the cell membrane. By William Tsai.

Yeast can reproduce sexually through a signaling pathway known as the mating factor pathway. In this process, two haploid yeast cells combine to form a diploid cell. Yeast cells secrete a signal molecule called mating factor that attracts them to their mates. Once the mating factor of one yeast binds to the receptor on another yeast, an outgrowth called a "shmoo" forms, which allows the yeast cells to fuse together.

Thinking about the limiting factors of cell size. Focus on volume to surface area ratio.

Cellular respiration is the process by which our bodies convert glucose from food into energy in the form of ATP (adenosine triphosphate). Start by exploring the ATP molecule in 3D, then use molecular models to take a step-by-step tour of the chemical reactants and products in the complex biological processes of glycolysis, the Krebs cycle, the Electron Transport Chain, and ATP synthesis. Follow atoms as they rearrange and become parts of other molecules and witness the production of high-energy ATP molecules.

What cellular evidence do we have to construct evolutionary trees and believe that all life on Earth shares a common ancestry?

Introduction to cellular respiration, including glycolysis, the Krebs Cycle, and the electron transport chain. Created by Sal Khan.

What is cloning and do we have clones living among us today? The answers might surprise you or maybe we should say ewe.

The lesson is designed for fourth grade students using scientific investigation to identify and compare the basic parts of a plant and animal cells. This activity consists of several steps over a period of several days. It includes student use of microscopes for observations and journals to collect data to identify and classify the basic parts of plant and animal cells. The assessment has an individual component and uses student work.

In this interactive demonstration students will make observations of diffusion of a semi permeable membrane and be able to compare these observations to the functions of a cell membrane.

Movement of ions in and out of cells is crucial to maintaining homeostasis within the body and ensuring that biological functions run properly. The natural movement of molecules due to collisions is called diffusion. Several factors affect diffusion rate: concentration, surface area, and molecular pumps. This activity demonstrates diffusion, osmosis, and active transport through 12 interactive models.

Introduction to the egg, sperm, and fertilization. Created in collaboration between the Association of American Medical Colleges and Khan Academy.

An overview of the membrane-bound structures that form the endomembrane system in eukaryotic cells.