Details
| Type of Product: | Science Object |
| Average Rating: | 
based on 13 reviews |
| Publication Title: | Cell Division and Differentiation SciPack |
| Publication Date: | 1/5/2011 |
| Grade Level: | Elementary School, Middle School, High School |
Description
Science Objects are two hour on-line interactive inquiry-based content modules that help teachers better understand the science content they teach. This Science Object is the first of three Science Objects in the Cell Division and Differentiation SciPack. It discusses the basics of cell division, the cell cycle, and how cells continue from one generation to the next.
Cells carry on the many functions needed to sustain life, including cell growth and development. The genetic information encoded in DNA molecules provides instructions for assembling protein molecules, which are both necessary for producing more cells and performing other cellular functions. Before a cell divides, the instructions are duplicated so that each of the two new cells gets all the necessary information for carrying on. Complex interactions among the different kinds of molecules in the cell cause distinct cycles of activities, including cell growth and division. Cell activity can also be affected by molecules from other parts of the organism, or even other organisms. Cells in multi–cellular organisms repeatedly divide to make more cells for growth and repair. Without cell division the surface area to volume ratio that constrains the size of single cells would limit an organism’s growth. Cell division in single–cell organisms makes asexual reproduction possible. Changes in DNA (mutations) occur spontaneously at low rates. Some of these changes make no difference to the organism, whereas others can change cells and organisms. In multi–cellular organisms, uncontrolled cell division, called cancer, can be caused by gene mutation. Exposure of cells to certain chemicals or radiation increases mutations and thus increases the chance of cancer.
Learning Outcomes:
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Describe the cellular events related to genetic material that must occur for cell division leading to growth or repair in multicellular organisms.
- Interpret the results of experimental variables, both internal and external to the cell, affecting cellular growth and division displayed within an experiment’s graphs or data charts.
- Compare and contrast normal, healthy cell division and cancer.
- Explain at the cellular level how recommendations for cancer prevention (i.e. smoking cessation) might influence and affect incidents of cancer.
Ideas For Use
Science Objects are two hour learning experiences teachers can use to enhance their understanding of a particular scientific concept. Teachers can access any topic “on demand” from the Internet. Topics are based on the science literacy goals in the national standards (NSES, Science for All Americans, Benchmarks, and the Atlas of Scientific Literacy) and tied to state standards.
Each Science Object provides an understanding of the science content by providing a structured set of learning experiences through simulations and practice assessments. Science Objects challenge teachers to explore and explain real world phenomena and are founded on the principle that learners must be challenged with a problem, observation, data, etc., in order to develop scientific understanding. Science Objects utilize the five phases of inquiry-based learning: Engage, Explore, Explain, Elaborate, and Evaluate
Learning Outcomes:
- Identify the role of food as a source of both energy and matter for the body to use for growth and repair.
- Define nutrients as substances that the body needs for proper functioning.
- Recognize that foods are needed to obtain the molecules the body needs.
- Describe that food is derived from other living things (plants and animals).
- Identify the categories of nutrients and the relative amounts needed.
Additional Info
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Science Discipline:
(mouse over for full classification)
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Cellular structures
Chromosomes
DNA
Mutations
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| Intended User Role: | Elementary-Level Educator, High-School Educator, Middle-Level Educator, Teacher |
| Educational Issues: | Inquiry learning, Teacher content knowledge |
Technical
| Resource Format: | application/x-shockwave-flash, audio/mp3, text/html, video/quicktime |
| Installation Remarks: | Run the Science Objects System Check to ensure that your system is capable of viewing the simulations: http://ecommerce2.nsta.org/system_check/ |
| Requirements: | Requires Macromedia Flash Player and Apple Quicktime Player |
National Standards Correlation
This resource has 12 correlations with the National Standards.
[HIDE CORRELATIONS]
- Life Science
- The cell
- Cells can differentiate, and complex multicellular organisms are formed as a highly organized arrangement of differentiated cells. (9-12)
- Cells have particular structures that underlie their functions. (9-12)
- Cells store and use information to guide their functions. (9-12)
- The genetic information stored in DNA is used to direct the synthesis of the thousands of proteins that each cell requires. (9-12)
- Cell function regulation allows cells to respond to their environment and to control and coordinate cell growth and division. (9-12)
- Molecular basis of heredity
- In all organisms, the instructions for specifying the characteristics of the organism are carried in DNA, a large polymer formed from subunits of four kinds (A, G, C, and T). (9-12)
- Each DNA molecule in a cell forms a single chromosome. (9-12)
- Most of the cells in a human contain two copies of each of 22 different chromosomes. (9-12)
- In human cells, there is a pair of chromosomes that determines sex: a female contains two X chromosomes and a male contains one X and one Y chromosome. (9-12)
- The fact that the human body is formed from cells that contain two copies of each chromosome--and therefore two copies of each gene--explains many features of human heredity, such as how variations that are hidden in one generation can be expressed in the next. (9-12)
- Some of the changes in DNA make no difference to the organism, whereas others can change cells and organisms. (9-12)
- Only mutations in germ cells can create the variation that changes an organism's offspring. (9-12)
Customer Reviews
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Great resource |
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Reviewed by: Morgan Burks (warrensburg, MO) on May 1, 2013 |
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This is a great resource. The pictures are great and the voice that reads the text is very easy to understand and listen to. I never lost interest through the entire thing. |
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Cell Divison and Differentiation!! |
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Reviewed by: Megan Murphy on January 27, 2013 |
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I think this would be really useful for me! I believe i would learn a lot from this. It could help me through my teaching career later on. |
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Indepth Resource |
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Reviewed by: Olukayode Banmeke (Riverdale, MD) on November 24, 2012 |
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This resource is very detailed; covering the cell cycle and the steps involved in mitosis. The interactive graphics and short videos are also very helpful to understanding. The omission of meiosis as the other type of cell division helped to focus on the basic process of cell - as that could have muddled up things considering how well it differs from mitosis! |
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A little grammar comment |
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Reviewed by: James Johnson (Custer City, PA) on November 21, 2012 |
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In the sentence: "Once transcription proceeds, a mRNA molecule is made as a copy of the DNA. This mRNA can then travel to the cytoplasm where it is used to synthesize a protein." the sentence should read "Once transcription proceeds, an mRNA molecule is made as a copy of the DNA. This mRNA can then travel to the cytoplasm where it is used to synthesize a protein." The word mRNA is treated as the sound of the letter m rather than as a consonant. |
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Stem Cells |
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Reviewed by: James Johnson (Custer City, PA) on November 20, 2012 |
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Another good description of process was the stem cell section. Many of my students have heard about stem cell research and this section would be great to use in clas. |
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mutations |
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Reviewed by: James Johnson (Custer City, PA) on November 20, 2012 |
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I really liked the description of the mutations that occur due to UV and oxygen radicals and especially where on the DNA structure they occur. I will use this in my classes. |
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Review of Cell Differentiation: Continuity of ... |
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Reviewed by: Ronaldo Relador (Bowie, MD) on February 29, 2012 |
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This lesson provides enlightening proofs of life within the cell. |
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Review of Cell Differentiation (Sci-Object) |
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Reviewed by: Ronaldo Relador (Bowie, MD) on February 17, 2012 |
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Great lesson on the smallest world yet reveals all the complexities that spell the foundation of life. |
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Cell Division and Differentiation: continuity of |
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Reviewed by: Kathryn on February 11, 2012 |
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This is a good review of mitosis. Images are clear. I think that this would be good to use as a review for students if it were projected and students could answer questions as you go through the resource. |
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Control Cell Division |
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Reviewed by: Duane Little (Washington, DC) on December 20, 2011 |
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When I was preparing a review of a chapter on cell division, I asked my students an exploratory question to engage their imagination (make a prediction). After reviewing this Science Object I was amazed at how detailed an answer there is to this question; I was not amazed at how well this resource covered this subject matter in such a clear and concise fashion! Two Thumbs Up, NSTA!!!! |
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Growing by Dividing |
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Reviewed by: Lorrie Armfield (Laurel, MD) on December 18, 2011 |
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This resource does a great job in explaining how cells in general grow by dividing over time, producing more and more cells of similar shape and size. The explanation provided of how twice as many cells are present in each subsequent generation as a result of cell division, was clear and concise. Finally, the graphic representations are great, and the hands-on interactivity and audio will appeal to individuals of various learning styles (visual, auditory, kinesthetic). Great Resource! |
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Cell / & Differentiation: Continuity of Life |
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Reviewed by: Pablo Pelayo on December 1, 2011 |
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I truly enjoyed listening to the text being read, watching and observing graphs, illustrations, supplemental experiment procedures and supplies listed, and video clips on cell division, DNA replication, bean sprout growth- showing the stem and root in action, et cetera
My question is, how can NSTA members use this incredible scipack ( Cell Division and Differentiation: Continuity of Life ) and make it work in the classroom?
-P G Pelayo |
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Resource |
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Reviewed by: April Chancellor (Dallas, TX) on October 17, 2011 |
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This is an awesome resource. |
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