Biology Mitosis vs. Meiosis
In this lesson, mitosis and meiosis are compared in terms of DNA replication, the number of divisions, the presence of synapsis, the number of daughter cells, and the numbers of chromosomes in the products and function. Only a partial lesson.
Run time (3:23)
The Cell Cycle
The cell cycle is a series of events that cells go through to
reproduce and create more cells. Learn about the stages of the cell
cycle with information from a science teacher in this video.
Definition of Stratification
There are several types of inequalities within the social stratification. Find out what they are and how they are important.
What The Liver Looks Like When You Drink Alcohol
Drinking alcohol causes liver cells to build up globules of
fat which turn into scar tissue on the liver. Learn how scar tissue
prohibits the liver from doing its job in this clip with information from a science teacher.
Watch a twister take shape right before your eyes and learn what it takes to make them form in this short, computer animated video. The video will briefly cover the following topics: tornadoes, tornado statistics, tornado colors, how tornadoes form, supercells, mesocyclones, and types of tornadoes. A ten question, fill in the blank quiz is at the conclusion of the video.
Harvard New Faculty Institute 2010, Panel #1
This half-day event is designed to give you an opportunity to meet the other new faculty from all across Harvard and to introduce you to the numerous resources available to you throughout the University. We will also have panels of distinguished faculty who will share their perspectives on how to approach scholarly work and effectively contribute to your department, the university and your field(s). -Recorded 9/29/10 -Harvard New Faculty Institute, Office of Faculty Development & Diversity
Learn about your skeleton and about the muscles in your body with this short, computer animated video. The video will briefly cover the following concepts: major bones, major muscles, how muscles and bones work together, muscle fibers, muscle types, muscle contractions, and muscle type functions. There is a ten question, fill in the blank quiz at the end of the video.
Types of Immune Responses: Innate and Adaptive. Humoral vs. Cell-Mediated
This is an overview of types of immune responses. The instructor explains the difference between innate and adaptive immunity. The instructor uses computer software for demonstration. The screen is dark with small writing, so the viewer may want to open the screen to 'full screen'. The instructor is clear and easy to understand.
Red Blood Cells
In this video, the instructor demonstrates and discusses oxygen uptake by hemoglobin in red blood cells. The instructor uses computer software (and different colors for clarification) for demonstration.
B Lymphocytes (B cells)
The instructor offers an verview of B cells (B lymphocytes) and how they are activated and produce antibodies. The instructor uses computer software for demonstration. The screen is dark with small writing, so the viewer may want to open the screen to 'full screen'. The instructor is clear and easy to understand.
A narrated, animated video explaining how the respiratory system works. Some key words include: alveoli, gas exchange, oxygen, carbon dioxide, and red blood cells.Run time 01:31
Do you ever feel that someone is watching what you are doing when you are on the Internet? In 2004, about 26 spyware programs were running on people's computers without you knowing it. Sometimes something as simple as IMing you can get spyware. It can lead to a system failure. This video shows you the 3 types and how to fight spyware.
Biology Cell Cycle
This brief video, while showing the various parts of a cell, shows how cells replicate and divide.
How the Body Works : The Filtering Mechanism
The filtering mechanism occurs at the Bowman's capsule of each nephron. As blood flows through the glomerular tuft, small molecules are forced through pores in the capillary walls into the nephron. Red blood cells and large protein molecules remain. The filtrate flows down the tubule and is joined by organic wastes and excess salts secreted from surrounding kidney tissues. Most of the glucose, amino acids, vitamins and essential salts are reabsorbed into the blood, leaving a concentrated solutio
Endocrine System: How It Works
This video animation gives a basic overview of the endocrine system and the major glands. Explains how hormones target receptors on cells. Grades 7-12. 2:26 min.
How Bacteria Cause Disease
This video demonstrates how bacteria gain entrance to the body. It also explains that when a tissue becomes infected by bacteria, white blood cells migrate to the site of infection and begin to ingest the bacteria. If the white blood cells fail to destroy the bacteria, then the bacteria increase in number. Run time (2:13)
The Forest Biome
This video is about the forest biome. Lean what a biome is, the types, how they are grouped and some interesting facts.4:04
Types of Resume Formats
This video tutorial describes the most common types of resumes commonly used in the public and private employment sectors. While it is geared towards military career transitions, it applies to anyone looking to make a job change. Grades 9-12. (12:18)
The teacher stands at the white board and explains that quotations are most frequently used around quoted material, certain types of titles and words when the subject is discussing a specific word. Put commas and periods inside of quotations, but keep colons and semicolons outside of the quotes. The teacher shows examples. (1:42)