BiologyWise
Biology Wise: Exocytosis vs. Endocytosis
The cellular processes of exocytosis and endocytosis are described and a table comparing them is provided. Includes examples.
BiologyWise
Biology Wise: What Is Facilitated Diffusion?
Explains the process of facilitated diffusion which allows selective movement of materials across the cellular membrane.
BiologyWise
Biology Wise: Aerobic and Anaerobic Respiration and Their Differences
The steps and the chemical equations in aerobic and anaerobic cellular respiration are described as well as the differences between them.
BiologyWise
Biology Wise: Chromosomes: The Carriers of Genetic Information
Explains what chromosomes are, their structure, their functions within a cell, and the health impact of mutations in a gene sequence.
BiologyWise
Biology Wise: Chromosomes vs. Chromatids: What You Need to Know
Explains what chromosomes are, how chromatids are related to them, and how they function together during cell division.
Estrella Mountain Community College
Estrella Mountain College: Cell Division and Meiosis
Resource provides a holistic and complete meiosis lesson with illustrations, animations, glossary, and links. Extremely detailed and helpful site.
Cornell University
Cornell University: Meiosis in Lily Anther Microsporocytes
This cell biology page is illustrated with photographs of plant meiosis taking place in a cell.
University of Arizona
University of Arizona: Metabolism Problem Set: Problem 11 Fermentation
Answer the question wrong and you will get a brief tutorial in the right direction. Answer it right and you must know what you are talking about. Part of a larger quiz on cellular respiration.
BiologyWise
Biology Wise: Mitochondria Functions
Describes the structure and functions of the mitochondria.
University of Arizona
University of Arizona: Products of Glycolysis
Part of a larger quiz on cellular metabolism. If you get the wrong answer you get a tutorial on the subject. Test your knowledge.
University of California
University of California Museum of Paleontology: Homologies
These pages are from the Understanding Evolution website for teachers. They focus on homologous structures that organisms with common ancestors share.
Khan Academy
Khan Academy: Glycolysis
Provides an overview of glycolysis which is the first step in the breakdown of glucose to extract energy for cellular metabolism. The article discusses in detail its two main phases: the energy-requiring phase and the energy-releasing...
CK-12 Foundation
Ck 12: Significance of Carbon
[Free Registration/Login may be required to access all resource tools.] This activity explores the significance and functions of carbon and explains why carbon is essential to life on Earth. Students will investigate and explain cellular...
ClassFlow
Class Flow: Krebs Cycle
[Free Registration/Login Required] Students engage in the third stage of cellular respiration- the Krebs cycle and the electron transport chain/oxidative phoshorylation.
Khan Academy
Khan Academy: Response to a Signal
Article takes a look at examples of the different ways cells can change their behavior in response to a signal at both the "micro" and "macro" levels.
Khan Academy
Khan Academy: Apoptosis
Learn about programmed cell death and how it is different from necrosis, cell death due to injury.
Macmillan Education
W.h. Freeman Publishing: Active Transport
Moving materials across the cell membrane sometimes requires energy, called active transport. This tutorial covers both primary and secondary active transport with good clear animations.
CK-12 Foundation
Ck 12: Prokaryotic and Eukaryotic Cells
[Free Registration/Login may be required to access all resource tools.] Watch videos, read grade-level texts, complete activities, and take assessments about prokaryotic and eukaryotic cells.
CK-12 Foundation
Ck 12: Cell Biology
[Free Registration/Login may be required to access all resource tools.] Read grade-level texts, complete activities, and take assessments about cell biology.
CK-12 Foundation
Ck 12: Organization of Cells
[Free Registration/Login may be required to access all resource tools.] Discusses how cells are organized in living things and explains the origin and significance of multicellular organisms.
CK-12 Foundation
Ck 12: Organization of the Human Body
[Free Registration/Login may be required to access all resource tools.] A variety of learning opportunuties about levels of organization in the human body. Includes videos, activities, discussion questions, and quizzes.
CK-12 Foundation
Ck 12: Life Science: Fermentation
[Free Registration/Login may be required to access all resource tools.] Sometimes cells need to obtain energy from sugar, but there is no oxygen present to complete cellular respiration. In this situation, cellular respiration can be...
University of Arizona
University of Arizona/problem 10:acidity During E. Trans
A part of a larger quiz on cellular respiration as a whole. If you miss the question, you'll get a tutorial on the subject. If you get it right, you're smart.
University of Arizona
Prokaryotes, Eukaryotes, & Viruses
This tutorial compares prokaryotic and eukaryotic cellular organization and contrasts cells with viruses. Includes a practice quiz to test your knowledge.