Lab 11: Frog & Fetal Pig Dissections

  

Virtual Lab: Virtual Frog Dissection

http://mhhe.com/biosci/genbio/virtual_labs/BL_16/BL_16.html

1. If you come upon any terms that are unfamiliar to you, please refer to your textbook for further explanation or search the word here: http://encarta.msn.com/encnet/features/dictionary/dictionaryhome.aspx

2. In this exercise, you will be performing a virtual frog dissection. To begin, click on the “Introduction” link on the opening page. Read through and listen to the information presented to learn about the basics of dissection and animal phylogeny. When you are finished, click the “Menu” button at the bottom of the page to return to the opening page of the laboratory activity.

3. Once you are back to the opening page, click the “External Anatomy” button. Read through, watch and listen to the information presented in these segments. When you are finished, click the “Menu” button at the bottom of the page to return to the opening page of the laboratory activity.

4. The last portion of this activity involves an examination of the internal anatomy of a frog. To do this, click the “Internal Anatomy” button on the opening page of the laboratory. Read through, watch and listen to all of the information presented in these segments and actively participate where required. You may have to do a virtual cut on the frog by dragging the appropriate tool to the frog or label organs of the dissected frog by dragging the appropriate organ names to the site on the opened frog. Please STOP when you are through with each labeling step and be sure to fill in your final answers on Figures 1 and 2 below.

  

Figure 1: Digestive System Organs

A   =

B   = 

C   = 

D   =

E   = 

F   =

  

Figure 2: Organs   of the Circulatory, Respiratory, Excretory and Reproductive Systems

A   =

B   = 

C   = 

D   =

E   = 

F   =

G =

H =

Frog Dissection Post-laboratory Questions:

1.  The dorsal side of the leopard frog:

a.  Is a light, solid color

b. Is a colored and patterned

c. Is initially cut during a dissection

d. A and C

2.  Leopard frogs:

a.  Are invertebrates

b. Are warm-blooded

c. Have a gills at one time during their life cycle

d. All of the above

3. In regards to the external anatomy of a leopard frog:

a.  It is easy to tell the sex of the animal

b. The cloaca is at the anterior end of the animal

c. The feet of the hind limbs have 5 toes

d. All of the above

4.  In the opened mouth of the leopard frog, one can see:

a.  The nostrils

b. The glottis

c. The vomerine teeth

d. A and B

e. All of the above

5.  Which of the following is found in the digestive system of the leopard frog but not in that of a human?

a.  Gall bladder

b. Stomach

c. Pancreas

d. Liver

e. None of the above

6.  Arteries in the circulatory system:

a.  Carry blood to the heart

b. Carry blood away from the heart

c. Carry out diffusion of gases

7.  In the leopard frog heart:

a.  The right atrium carries oxygen rich blood

b. The left atrium carries oxygen poor blood

c. There are 3 chambers present

d. All of the above

8.  By comparison to the leopard frog heart, the human heart:

a.  Has 4 chambers present

b. Carries mixed blood in the ventricles

c. Is more efficient

d. A and C

e. All of the above

9.  Fat bodies play a role in:

a.  Respiration

b. Circulation

c. Hibernation

d. Reproduction

e. C and D

10.  The most anterior portion of the leopard frog brain is/are the:

a.  Olfactory lobes

b. Cerebrum

c. Optic lobes 

Virtual Lab: Virtual Fetal Pig Dissection

https://www.whitman.edu/academics/departments-and-programs/biology/virtual-pig

Figure 1: Fetal Pig – Digestive System

  

1. __________________________
  2. __________________________
  3. _________________________
  4. _________________________
  5. ________________________
  6. _________________________
  7. __________________________
  8. __________________________
  9. __________________________
  10. _________________________
  11. _________________________
  12. _________________________
  13. ________________________

Identify the organ (or structure)

14. _____________________________ Opening (valve) between stomach and small intestine.
15. _____________________________ Stores bile, lies underneath the liver.
16. _____________________________ A branch of the large intestine, a dead end.
17. _____________________________ Separates the thoracic and abdominal cavity
18. _____________________________ Membrane that holds the coils of the small intestine.
19. _____________________________ The straight part of the small intestine, after stomach.
20. _____________________________ Empties bile into the duodenum from the gall bladder.
21. _____________________________ The last stretch of large intestine
22. _____________________________ Bumpy structure under the stomach; makes insulin
23. _____________________________ Lies between the two umbilical vessels.

Figure 2: Urinary and Reproductive Systems

Male  Female

Identify the Organs (or structure) on the above diagram:

A.

B.

C.

D.

E.

F.

G.

H.

I.

J.

K.

Identify the organ:

· Urine passes through the _________ to reach the urinary ___________ for storage.

· Urine exits the ________ to the outside through the ____________

· The ______________ is where sperm production takes place.

· The ______________ contain all the developing eggs the female pig will ever have.

· Called a ___________________ in humans, the __________ receives the egg from the ovary at ovulation.

· Fertilized eggs travel from the oviducts into the ______________ for implantation.

 

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peer reviewed article

Select one peer-reviewed scientific article with the topic on animals of any phylum, except any domestic animals or pets or humans. Write a succinct summary of the main points and findings of the article, and then a more thorough review/critique. Include a full citation of the peer-reviewed article using the format for the journal Ecology:

Single author:

Last name, First initial. Second initial.  Date.  Title.  Journal title volume number:pages.

Example:  Abrams, P. A.  1987.  The functional responses of adaptive consumers of two resources.  Theoretical Population Biology 32:262-288. Two or more authors:

Last name, First initial. Second initial., First initial. Second initial. Last name, and First initial. Second initial. Last name.  Date.  Title.  Journal title volume number:pages.

Example:  Hjalten, J., K. Danell, and P. Lundberg.  1993.  Herbivore avoidance by association: vole and hare utilization of woody plants.  Oikos 68:125-131.

Include a URL link to the article so that I can find the original article that you cited. Your paper should be at least one-page, but no more than two pages, long and single-spaced. If you are citing statements from the article, please paraphrase or put them in a quotation. Points will be deducted for grammatical errors, misspellings, and poorly written sentences.

 

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Read Before! New HW! NO LATE WORK

Bio Prompt: 200 words min *Only use links provided*

Gene therapy has changed since the arrival of CRISPR (Links to an external site.), a novel and highly targeted gene editing tool that no longer requires the use of viral carriers. Combined with cloning, stem cell research and tissue engineering, the day of designer babies is not far away. In fact, it is a reality and we are having to discuss ethics in reproductive medicine anew. The technology in question are synthetic embryos (Links to an external site.) grown from stem cells entirely outside a woman’s womb, as explained by Carl Zimmer in the New York Times. John D. Aach and his colleagues explored the ethics of creating what they call “synthetic human entities with embryo-like features (Links to an external site.)” — Sheefs, for short. For now, the most advanced Sheefs are very simple assemblies of cells. Discuss how a combination of the gene editing tool CRISPR and stem cell based synthetic embryo technology will change the way we think about reproductive technologies and gene therapy.

Bio Prompt Peer Response: 100 words min 5/3/19

After reading the first article, I am mind blown. CRISPR–Cas9 is a modern tool that molecular biologists have been using to slice the genome in human cells and alter the genome however they’d like. This tool has become very popular because of its potential to treat diseases. Researchers can still working on using the tool to understand cell fate and how to possibly manipulate it. Which can lead to some amazing results such as “turning off” a gene for a specific disease. The CRISPR-Cas9 can also allow scientists to edit the genes of human embryos! Which first of all is insanely crazy because there is a possibility that in the near future the genome of a human embryo could be modified to be the “perfect” baby. I had seen on social media a while back talking about using stem cell engineering to have a baby outside the womb and I thought it was a joke until now. This new discovery will bring a lot of controversy, because women will no longer be the only one to carry a child, which could stir up a lot of religious beliefs. In the New York Times article, the authors mention how this could be a discovery with a lot of ethical issues. 

This new technology can change so many things in the future, like who gets to decide and regulate access to embryo editing? Will this been mainly available to high income people? I think it’s an amazing tool but there a lot of ethical guidelines that would need to be set. 

Bio Questions: 1-4 Due: 5/2/19

1. List the common infertility problems in women. What is the major infertility problem in men? Is it correctable?

2. Why should women consider collecting and freezing oocytes for use later in life when they want to have children? What are the risks associated with older women having children?

3. In selecting target cells to receive a transferred gene in gene therapy, what factors do you think would have to be taken into account?

4. A couple has a child with neurofibromatosis. They come to your genetic counseling office for help. After taking an extensive family history, you determine that there is no history of this disease on either side of the family. The couple wants to have another child and wants to be advised about the risks of that child having neurofibromatosis. What advice do you give them?

 

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5 page essay

my animal is red panda

 

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Science In Action Biology Assignment

 For this assignment, you will read a book-­‐length account of “science in action” – real people engaging in the practices of science to generate new scientific knowledge ( the books you can use are listed in the file attatched).  There are many books that are intended for a public audience and provide a window into the thoughts, emotions, and motivations of scientists. This assignment offers an additional challenge to synthesize supplemental reading and course objectives, while delving further into some of the big ideas of biology. 

This an analytical paper, not a book report. Your writing should clarify the reader’s understanding of what scientists do, how science is done, and how new scientific knowledge is generated.

Analyze two specific examples of science-­‐in-­‐action from the book you chose in response to the guiding questions below and make explicit connections to what you have learned and experienced in BSC1005L. Choose examples to demonstrate that you read the book completely; these should be the BEST examples of science-­‐in-­‐action from the book and your analysis should provide evidence that these are appropriate examples.

 

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Bio assignment 2

all the information is in the document.

 

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Persuasion & Credibility

 

For this discussion board, you will watch Alex Laskey’s speech entitled “How behavioral science can lower your energy bill.”  https://www.youtube.com/watch?v=4cJ08wOqloc 

1.First describe the types of evidence he employs to try to persuade his audience?

2.Second, how does he establish his credibility during the speech?

3.Third, what types of appeals does he include in his speeches? (Ethos, pathos, logos).

4. Fourth, did you find his speech effective, and if so, why?

*Posts should be at least 500 words.

 

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Biology Lab report ASAP 6 hours

Objective, materials, procedure, result, conclusion, Questions

Questions

• Look at the growth curves using Aligent CFU and your CFU: are they similar or different.  If they are different why is that..• Look at the aligent  plate count vs absorbance graph  – are they similar are they different.  If they are different why do you think that • Look at the aligent and your cfu data vs time standard curve  – calculate the maximum time of doubling

 

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Microbiology in the News

Assignment 19- Microbiology in the News – 1

For this discussion assignment, you are to search for some scientific, news-worthy story of (a) microbe(s), and summarize the article. The story may be about viruses, bacteria, fungi, protists, and/or microscopic animals (tapeworms, roundworms, etc.). You will provide the title of the story, the author, source. its date, and the URL link. Shown below, I have summarized a story and provided to you an example of how to complete this assignment. You should utilize proper English and grammar.  Also, I expect a good summary will be multiple sentences (at least 1 paragraph), and not necessarily too brief.  Failure to provide everything requested here will result in less than full credit.

The example:

Title: Are Pets the New Probiotic?

Author: Richard Schiffman

Source: The New York Times – Online

Date: June 6, 2017

Link: https://www.nytimes.com/2017/06/06well/family/are-pets-the-new-probiotic.html

This article explains how important our domesticated pets and/or animals are to us as a source of probiotics.  Generally, in taking artificial probiotics, we ensure that our bodies maintain a source of “good bacteria” called normal microbiota.  This article suggests that our pets may be a wonderful source for these microbes.  We tend to overly clean and sanitize (mostly indoors) all aspects of our lives.  However, this prevents our immune systems from being exposed to all types of microbes (like viruses, bacteria, fungi, protists, etc.).  Without exposure to some microbes, our immune systems weaken, and many not recognize our normal microbiota from pathogenic microbes, and therefore, illnesses increase.  The article suggests that science continues to show that the microbes living in and on our domesticated animals provide huge benefits to us and our immune systems, especially when compared to humans that have no exposure to pets and other animals.  This is the example of how it is suppose to be done.

Assignment 20 – Microbiology in the News- 2

For this discussion assignment, you are to search for some scientific, news-worthy story of (a) microbe(s), and summarize the article, as explained in “Microbiology in the News – 1” discussion assignment.  The story may be about any type of microbes: viruses, bacteria, fungi protists, and/or microscopic animals, except a different story/article than before. As before, please provide the title of the story, the author, source, its date, and the link.  You may revisit “Microbiology in the News -1” to get additional details.  Remember to utilize proper grammar, and that a good summary should be multiple sentences (at least 1 paragraph), and not necessarily brief. Failure to provide everything requested in the discussion assignment will result in less than full credit.

These are two assignment

 

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