Below are links that you can use as references for your Genetic Engineering Pamphlet:
Cloning
What is Cloning? from the Genetic Science Learning Center
How Cloning Works from How Stuff Works
Dolly the Sheep from the Roslin Institute
Dolly the Sheep from Live Science via Fox News
GMOs (Genetically Modified Organisms)
GMOs from Nature Education
GMOs from Encyclopedia Britannica
Are Biotech Foods Safe to Eat from WebMD
GMOs Pros and Cons from Healthline
Gene Therapy
Gene Therapy from the National Institute of Health
Gene Therapy Allows Children to Walk and Talk from the BBC
Gene Therapy for Genetic Disease from the American Society of Genes
Gene Therapy from the Mayo Clinic
Artificial Selection (Selective Breeding)
Artificial Selection from the University of California at Berkeley
Artificial Selection from National Geographic
Selective Breeding from Wikipedia
Selective Breeding from the BBC
Recombinant DNA (Gene Spicing)
Recombinant DNA from Encyclopedia Britannica
Gene Splicing from Reference.com
Uses of Recombinant DNA from Rensselaer Polytechnic Institute
Diagram of Recombinant DNA Process from The Biology Corner
Creating Recombinant DNA Diagram from GenomeEd
The Impact of Genetic Engineering on the Field of Medicine
Genetic Engineering and Vaccines from Vaccine Makers
Genetic Engineering and Insulin Production from the National Institute of Health
Genetic Engineering and Health from Nature
Proposed Treatment to Fix Genetic Diseases Raises Ethical Issues from NPR
The Impact of Genetic Engineering on the Field of Forensics
The Use of Genetics in Forensics from Bright Hub
DNA Profiling from Wikipedia
Uses of Genetic Engineering in Forensics from Yale Teachers Institute
How DNA Evidence Works from How Stuff Works
The Impact of Genetic Engineering on the Field of Agriculture
Genetic Engineeirng in Plant Crops from the Genetic Society of America
Genetic Engineering fin Agriculture from the USDA
Cheers for Cheerios from the NY Times
A Genetic Fix to Put the Taste Back in Tomatoes from the NY Times
Wednesday, January 15, 2020
Tuesday, May 7, 2019
Friday, March 22, 2019
Homeostasis WebQuest
Put your name on a sheet of notebook paper. Then complete the following tasks. You will have one class day to complete Parts A to E.
Part A- Homeostasis Overview and Body Temperature Regulation:
Watch an introductory video on homeostasis at Khan Academy: Homeostasis at Khan Academy
(You can pause and rewind the video at any time.)
Answer the following questions:
1. Name TWO things the girl's body did to maintain homeostasis after she became too cold.
2. Name TWO things the girl's body did to maintain homeostasis after she became too warm.
3. Identify two other areas in which the body needs to maintain homeostasis.
Part B- Blood Sugar Regulation:
Visit Shmoop.com's article on homeostasis: Shmoop Homeostasis Article
Complete the following:
4. Find the diagram showing 5 parts of the Circle of Homeostasis. As best as you can, draw this diagram showing the 5 parts and the fulcrum (seesaw). You do not need to add in the black and white text boxes, just focus on the colored part of the diagram.
At the bottom of the page is a section called Failure of Homeostasis which discusses what can happen if homeostasis goes wrong.
5. Identify the disease discussed in this section.
6. Briefly discuss what causes the disease.
Part C- pH Regulation:
Visit the McGraw-Hill website section on homeostasis: McGraw-Hill Summary of Homeostasis
Scroll down to the section on Control of pH and read it carefully. Then answer the question:
7. Identify the three ways the pH of the body is regulated.
Part D- Blood Pressure Regulation:
Read the answer to the question "How is my blood pressure normally regulated?" on How Stuff Works.
8. In one sentence, describe how your brain responds when your blood pressure drops too low.
9. In two sentences, describe the two ways your kidneys regulate your blood pressure.
Part E- Water Balance Regulation:
Watch the Bozeman Science YouTube video on Osmoregulation.
10. What hormone has an effect on the nephrons in the kidneys and prevents excess water from being excreted?
Part A- Homeostasis Overview and Body Temperature Regulation:
Watch an introductory video on homeostasis at Khan Academy: Homeostasis at Khan Academy
(You can pause and rewind the video at any time.)
Answer the following questions:
1. Name TWO things the girl's body did to maintain homeostasis after she became too cold.
2. Name TWO things the girl's body did to maintain homeostasis after she became too warm.
3. Identify two other areas in which the body needs to maintain homeostasis.
Part B- Blood Sugar Regulation:
Visit Shmoop.com's article on homeostasis: Shmoop Homeostasis Article
Complete the following:
4. Find the diagram showing 5 parts of the Circle of Homeostasis. As best as you can, draw this diagram showing the 5 parts and the fulcrum (seesaw). You do not need to add in the black and white text boxes, just focus on the colored part of the diagram.
At the bottom of the page is a section called Failure of Homeostasis which discusses what can happen if homeostasis goes wrong.
5. Identify the disease discussed in this section.
6. Briefly discuss what causes the disease.
Part C- pH Regulation:
Visit the McGraw-Hill website section on homeostasis: McGraw-Hill Summary of Homeostasis
Scroll down to the section on Control of pH and read it carefully. Then answer the question:
7. Identify the three ways the pH of the body is regulated.
Part D- Blood Pressure Regulation:
Read the answer to the question "How is my blood pressure normally regulated?" on How Stuff Works.
8. In one sentence, describe how your brain responds when your blood pressure drops too low.
9. In two sentences, describe the two ways your kidneys regulate your blood pressure.
Part E- Water Balance Regulation:
Watch the Bozeman Science YouTube video on Osmoregulation.
10. What hormone has an effect on the nephrons in the kidneys and prevents excess water from being excreted?
Friday, February 22, 2019
Fascinating Ideas About Evolution
Use these links to find the videos to complete this activity.
Fossils and Ancient Life
What is a Fossil? from MonkeySee
Dating Earth's History
How does Carbon Dating Work- Instant Egghead #28 from Scientific American
Index Fossils from Takata Science
Rate of Evolution
Gradualism vs. Punctuated Equilibrium from MrKensBiology
Endosymbiotic Theory
How We Think Complex Cells Evolved from Adam Jacobson
Peppered Moths and Industrial Melanism
The Peppered Moths of England by Pichael Moon
Fossils and Ancient Life
What is a Fossil? from MonkeySee
Dating Earth's History
How does Carbon Dating Work- Instant Egghead #28 from Scientific American
Index Fossils from Takata Science
Rate of Evolution
Gradualism vs. Punctuated Equilibrium from MrKensBiology
Endosymbiotic Theory
How We Think Complex Cells Evolved from Adam Jacobson
Peppered Moths and Industrial Melanism
The Peppered Moths of England by Pichael Moon
Friday, October 19, 2018
The Role of the Ribosomes, ER, Golgi Apparatus, and Nucleus in Production of Proteins
Let's do a little review of basic cell structure. The three main parts of the cell are: the plasma membrane, the nucleus, and the cytoplasm (with its associated organelles).
In the enter of the cell is the nucleus, which holds DNA- the genetic material. Every cell is contained within a membrane. Plant cells also have a cell wall around the outside of the membrane while animal cells do not. The cell wall provides protection to the plant cell as plants lack a skeleton. Inside the plasma membrane there is the cytoplasm (also called the cytosol). The cytoplasm is not just a fluid, but rather a complex system of fibers, tubes, membranes, particles, and organelles (little organs), all of which have very specific functions.
The relationship between three of these organelles- the ribosomes, the ER, and the Golgi- is very intricate. Lets look a their functions one at a time.
Ribosomes
These are relatively tiny organelles. There are two kinds of ribosomes; free ribosomes (which float free in the cytoplasm), and bound ribosomes (which are attached to the endoplasmic reticulum). Ribosomes are so important because they assemble amino acids into proteins. If a protein is going to be used inside the cytoplasm of the cell, it is generally built by free ribosomes and not by ones bound to the endoplasmic reticulum.
Endoplasmic Reticulum
This brings us to an organelle called the Endoplasmic Reticulum. Scientists call it ER for short. There are two different kinds of ER, Smooth ER and Rough ER.
Smooth ER is not involved in protein synthesis. It is the site of the synthesis of fatty acids and phospholipids. It is called "smooth" because it has no ribosomes on its surface. It is shaped like a network of little tubes.
Smooth ER creates steroids and stores ions so that the cell can have them when its needs them. Smooth ER's enzymes catalyze many different reactions. It detoxifies poisonous substances in the liver, for example. Smooth ER is associated with drug tolerance. Alcoholics have a lot more smooth ER than people who don't drink. As people consume more alcohol, they realize they have to drink more to get the same effect. This happens because more inactivating enzymes are being produced. These inactivating enzymes are responsible for helping to detoxify the liver. A body's production of more smooth ER is one example of how your body tries to maintain homeostasis by protecting you from the toxic effects of alcohol.
Rough ER gets its name because it is studded (covered) with ribosomes,which makes it look "rough" under a microscope. These ribosomes are said to be "bound" to the ER. The largest number of bound ribosomes is found in cells that produce enzymes to be secreted, which means they are made for delivery outside of the cell into the body.
Once a protein has been synthesized (made), rough ER creates a bubble around it by pinching off a portion of its own membrane. This bubble is called a transition vesicle. The transition vesicle then moves to either the cell membrane or to the Golgi apparatus.
The Golgi Apparatus was named for Camillo Golgi, the Italian physician who discovered it. It is also referred to as the Golgi Body, the Golgi Complex, or simply the Golgi to avoid confusion. The Golgi looks like a loose stack of pancakes. Plant cells contain many of these stacks, while animals cells contain less.
The Golgi takes simple molecules it gets from the Rough ER and makes them larger. Remember the vesicles? These vesicles or 'transporter packages' have their contents modified inside the Golgi. After these little packages get modified, they get 'addressed' for delivery to their next destination. The packages that now carry the modified contents are called secretory vesicles. The Golgi is the final link in the relationship between the ribosomes, ER, and Golgi.
IN SUMMARY:
- Proteins are made in ribosomes.
- Rough ER sends simple protein molecules to the Golgi Apparatus in transition vesicles.
- The Golgi absorbs these transition vesicles through one side of its membrane.
- The Golgi takes the simple molecules and converts them into larger macromolecules.
The larger molecules get packaged into secretion vesicles.
- The Golgi then releases these secretion vesicles out of the other side into the
cytoplasm.
- From there, the secretion vesicles move onto the cell membrane and are released out
of the cell.
In the enter of the cell is the nucleus, which holds DNA- the genetic material. Every cell is contained within a membrane. Plant cells also have a cell wall around the outside of the membrane while animal cells do not. The cell wall provides protection to the plant cell as plants lack a skeleton. Inside the plasma membrane there is the cytoplasm (also called the cytosol). The cytoplasm is not just a fluid, but rather a complex system of fibers, tubes, membranes, particles, and organelles (little organs), all of which have very specific functions.
The relationship between three of these organelles- the ribosomes, the ER, and the Golgi- is very intricate. Lets look a their functions one at a time.
Ribosomes
These are relatively tiny organelles. There are two kinds of ribosomes; free ribosomes (which float free in the cytoplasm), and bound ribosomes (which are attached to the endoplasmic reticulum). Ribosomes are so important because they assemble amino acids into proteins. If a protein is going to be used inside the cytoplasm of the cell, it is generally built by free ribosomes and not by ones bound to the endoplasmic reticulum.
Endoplasmic Reticulum
This brings us to an organelle called the Endoplasmic Reticulum. Scientists call it ER for short. There are two different kinds of ER, Smooth ER and Rough ER.
Smooth ER is not involved in protein synthesis. It is the site of the synthesis of fatty acids and phospholipids. It is called "smooth" because it has no ribosomes on its surface. It is shaped like a network of little tubes.
Smooth ER creates steroids and stores ions so that the cell can have them when its needs them. Smooth ER's enzymes catalyze many different reactions. It detoxifies poisonous substances in the liver, for example. Smooth ER is associated with drug tolerance. Alcoholics have a lot more smooth ER than people who don't drink. As people consume more alcohol, they realize they have to drink more to get the same effect. This happens because more inactivating enzymes are being produced. These inactivating enzymes are responsible for helping to detoxify the liver. A body's production of more smooth ER is one example of how your body tries to maintain homeostasis by protecting you from the toxic effects of alcohol.
Rough ER gets its name because it is studded (covered) with ribosomes,which makes it look "rough" under a microscope. These ribosomes are said to be "bound" to the ER. The largest number of bound ribosomes is found in cells that produce enzymes to be secreted, which means they are made for delivery outside of the cell into the body.
Once a protein has been synthesized (made), rough ER creates a bubble around it by pinching off a portion of its own membrane. This bubble is called a transition vesicle. The transition vesicle then moves to either the cell membrane or to the Golgi apparatus.
The Golgi Apparatus was named for Camillo Golgi, the Italian physician who discovered it. It is also referred to as the Golgi Body, the Golgi Complex, or simply the Golgi to avoid confusion. The Golgi looks like a loose stack of pancakes. Plant cells contain many of these stacks, while animals cells contain less.
The Golgi takes simple molecules it gets from the Rough ER and makes them larger. Remember the vesicles? These vesicles or 'transporter packages' have their contents modified inside the Golgi. After these little packages get modified, they get 'addressed' for delivery to their next destination. The packages that now carry the modified contents are called secretory vesicles. The Golgi is the final link in the relationship between the ribosomes, ER, and Golgi.
IN SUMMARY:
- Proteins are made in ribosomes.
- Rough ER sends simple protein molecules to the Golgi Apparatus in transition vesicles.
- The Golgi absorbs these transition vesicles through one side of its membrane.
- The Golgi takes the simple molecules and converts them into larger macromolecules.
The larger molecules get packaged into secretion vesicles.
- The Golgi then releases these secretion vesicles out of the other side into the
cytoplasm.
- From there, the secretion vesicles move onto the cell membrane and are released out
of the cell.
Monday, September 17, 2018
Biochemistry Videos (for Biology Periods 3, 4, and 6 only)
Crash Course: That is why Carbon is a Tramp
Amoeba Sisters: Biomolecules
Crash Course: You Are What You Eat
Amoeba Sisters- Properties of Water
Crash Course- Water: Liquid Awesome
Bozeman Science- Water: A Polar Molecule
Amoeba Sisters: Biomolecules
Crash Course: You Are What You Eat
Amoeba Sisters- Properties of Water
Crash Course- Water: Liquid Awesome
Bozeman Science- Water: A Polar Molecule
Tuesday, June 5, 2018
Field Research Slides Template
MAKE A COPY of the Slides template into your Google Drive using a new name.
SHARE the new presentation with ALL GROUP MEMBERS and Mrs. Keller at nkeller@penncrest.org.
Make sure all group members have permission to edit.
The presentation should be exactly 9 slides long in the order given.
Do not add, remove, or rearrange slides.
Field Research Slides Template
SHARE the new presentation with ALL GROUP MEMBERS and Mrs. Keller at nkeller@penncrest.org.
Make sure all group members have permission to edit.
The presentation should be exactly 9 slides long in the order given.
Do not add, remove, or rearrange slides.
Field Research Slides Template
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