Cold Spring Harbor Laboratory
Sex Cells Have One Set of Chromosomes; Body Cells Have Two
What's the difference between body cells and sex cells? Learners explore the question and the process of meiosis using an interactive lesson. An animation describes the discovery of meiosis and describes its phases for a detailed and...
Cold Spring Harbor Laboratory
Development Balances Cell Growth and Death
Cells demonstrate a life cycle like other living things, but what if death was no longer part of the cycle? Learn about the important balance requiring death to continue functioning. An online interactive introduces a group of scientists...
Curated OER
Cell (Biology)
Students conduct a series of activities to explore the nature of cells. In this biology activity, students observe plant and animal cells under the microscope and compare them. They differentiate osmosis and diffusion.
Curated OER
DNA Extraction
Students extract and observe a visible amount of DNA from Escherichia. coli cells. They discuss the properties of DNA. Confirmation of the presence of DNA by a reaction with an indicator is confirmed within this lesson. Many hands-on...
Curated OER
DNA
For this science worksheet, students read about cells, chromosomes, and genes. Students order the following items from largest to smallest: cells, chromosomes, DNA, genes, and bases.
Cornell University
Plant Cell Crime Scene
Use science to solve the mystery of the Poplar murder. Pupils use forensic botany to determine if a suspect could be the killer. By analyzing images from a Transmission Electron Microscope, learners determine if the material found on the...
Curated OER
Cell Respiration Worksheet
Beginning biologists demonstrate their grasp on cellular respiration, photosynthesis, and energy flow though ecosystems when completing this learning exercise. Fifteen multiple choice and short answer questions test their knowledge....
Curated OER
Regents High School Examination: Living Environment 2005
The 2005 version of the Regents High School Examination in the area of ecology is as comprehensive as previous years' exams. It consists of 40 multiple choice questions on everything from the structure of DNA to the interactions within...
Curated OER
Regents High School Examination: Living Environment 2003
The living environment, from the interior of a cell to the complex relationships among populations, are queried in this final examination. Learners look at air pollution maps, diagrams of cells, population graphs, and drawing of cells....
Howard Hughes Medical Institute
The Making of the Fittest: The Birth and Death of Genes
Adaptations must be made as environments change. This fabulous presentation features Icelandic icefish, a transparent, scaleless specimen that even has colorless blood. Genetics and adaptations concepts are explored as scientists study...
Biology Junction
Cellular Division
Based on current scientific knowledge, all cells come from preexisting cells. Scholars learn about cell division, cell replication, mitosis, meiosis, and more with a PowerPoint. It describes the differences between prokaryotes and...
Curated OER
7.012 Fall 2004 Section Self-quiz
This quiz just looks neat! It has two cell diagrams for biology class members to label. They also describe the function of each organelle. A prokaryotic and eukaryotic cell are displayed for them to compare, and then they fill in the...
Curated OER
7.012 F’04 Problem Set 1 ~ Biology
Course identification information is included in the upper left corner as well as within the title of this learning exercise. If you overlook or remove that information, you are left with a tremendous college biology assignment. There...
Curated OER
How HIV Infects Cells
In this how HIV infects cells worksheet, students read the given information about how HIV infects cells. Students explain the role of various structures in HIV infection. Students design a drug that might slow the rate of cellular...
Curated OER
DNA Extraction Lab
Students extract DNA and test for its presence from unroasted (raw) wheat germ using a prescribed procedure. They modify the procedure to provide a less expensive, easier method. They also extract DNA from different available plant,...
Curated OER
Investigating DNA
Learners engage in a variety of activities designed to facilitate the understanding of DNA. Activities include preparing human chromosome spreads, separating a mixture of dyes using gel electrophoresis and extracting DNA from onion cells,
Curated OER
DNA Extraction with Kitchen Chemistry
Young scholars extract DNA from green peas. In this DNA extraction lesson plan, students use a blender to chop up peas, they mix them with a little soap, they tenderize them and they mix them with alcohol to see the DNA precipitate...
Howard Hughes Medical Institute
Stem Cells and Diabetes
Students investigate stem cells. In this science instructional activity, students discuss stem cells and view a video about human embryonic development. Students conduct the pulse-chase.
Curated OER
Learning the Structure and Function of DNA
Students read about Humane Genome Project, examine structure and function of DNA, and participate in gel-electrophoresis lab. They complete Internet activity to test their knowledge of DNA.
Curated OER
Eukaryotic Cell Structure
In this biology worksheet, students complete 20 fill in the blank questions about eukaryotic cells. They identify the parts and functions of cell organelles.
Curated OER
The Structure of DNA
Learners describe the structure of the double helix, explain how DNA copies itself, and recognize that the sequence of DNA is what makes each individual unique.
Curated OER
How DNA Controls the Workings of the Cell
For this DNA worksheet, students compare the DNA sequence of a human and a cow to complete 4 fill in the blank questions and 4 short answer questions.
Curated OER
DNA Models
Learners create DNA models. Using puzzle pieces to represent the parts of a DNA strand, they put together a segment of DNA. Once everyone has completed their individual strand, they being linking with other students using tape. Class...
Curated OER
DNA, RNA, Protein Synthesis, & Mutation
In this biology worksheet, students identify and label the diagram shown by stating what each part of the diagram represents on the line. Then they use the DNA strand as the original strand and complete the data table. Students also...