Ancient Shark Attack Preserved in Whale Bone

Ancient Shark Attack Preserved in Whale Bone

My article suggests that sharks and whales at one time were very aggressive towards each other. In South Carolina a whale rib was found, it offers a glimpse on the interaction between prehistoric sharks and whales about 3 to 4 million years ago. On the link below the article will show a picture of a whale rib, that was severely bitten by a shark. The rib is bitten in 3 places, only a strong jawed animal could do that. Experts measure 6 centimeters from each tooth mark and conclude that the whale was most likely bitten by a Megalodon or any other large shark 3 to 4 million years ago. The whale found in North Carolina seems to be an ancestor of the pacific blue humpback whale. Scientists figured out the whale survived the attack but died 6 weeks later from disease.

If this article could have had images of the giant whale or shark at the time it would have been easier and maybe more enjoyable. Also this article could of had more facts on the interactions between sharks and whales that would have been nice. I felt that the author kept going on and on about the certain whale that was bitten I believe he should of focused on the areas these interactions were taken place and maybe why the shark attacked the whale and maybe it was because the whale wondered near its territory. The author left many questions unanswered.

This article was very interesting it grasped me unlike the rest of the articles out there. I enjoyed how this article had many of the experts opinions and the experts ideas. This article shows us the inside relationship of prehistoric dinosaurs it only leads me to wonder what other interactions other sea creatures could have had.

Ancient Shark Attack Preserved in Whale Bone

Ancient Shark Attack Preserved in Whale Bone
My article suggests that sharks and whales at one time were very aggressive towards each other. In South Carolina a whale rib was found, it offers a glimpse on the interaction between prehistoric sharks and whales about 3 to 4 million years ago. On the link below the article will show a picture of a whale rib, that was severely bitten by a shark. The rib is bitten in 3 places, only a strong jawed animal could do that. Experts measure 6 centimeters from each tooth mark and conclude that the whale was most likely bitten by a Megalodon or any other large shark 3 to 4 million years ago. The whale found in North Carolina seems to be an ancestor of the pacific blue humpback whale. Scientists figured out the whale survived the attack but died 6 weeks later from disease.
If this article could have had images of the giant whale or shark at the time it would have been easier and maybe more enjoyable. Also this article could of had more facts on the interactions between sharks and whales that would have been nice. I felt that the author kept going on and on about the certain whale that was bitten I believe he should of focused on the areas these interactions were taken place and maybe why the shark attacked the whale and maybe it was because the whale wondered near its territory. The author left many questions unanswered.
This article was very interesting it grasped me unlike the rest of the articles out there. I enjoyed how this article had many of the experts opinions and the experts ideas. This article shows us the inside relationship of prehistoric dinosaurs it only leads me to wonder what other interactions other sea creatures could have had.

Cell Organelle Presentations and 3D Models

Mitochondrion Model by P. Bisconti, D. Borcich, A. Falcon

  Mitochondria Project by P. Bisconti, D. Borcich, A. Falcon

Plasmids and Vacuoles by K. Monaco, G. Yienger

Plasmids and Vacuoles by K. Monaco, G. Yienger

 Vacuoles and Plasmids by K. Monaco, G. Yienger

Cell Membrane and Cell Wall Model by J. Bothwell and E. Kister

  Biology Cell Wall and Membrane by J. Bothwell and E. Kister

Endoplasmic Reticulum by T. Diaz, O. Hayes, M. Lewis

  Endoplasmic Reticulum and Ribsomes by T. Diaz, O. Hayes, M. Lewis

Nucleus by T. Bremar, P. Meade, S. Walsh

Nucleus Project by T. Bremar, P. Meade, S. Walsh

Cytoplasm by C. Cory, L. Sapon

 
Cytoplasm Cytoskeleton by C. Cory, L. Sapon

Enzyme Catalysis Inquiry Lab

The core biology students were shown how to assay the rate of reaction for the decomposition of hydrogen peroxide into water and oxygen by the enzyme catalase. They then designed their own experiments to see what factors might influence that rate of reaction.

Purging Cells in Mice Is Found to Combat Aging Ills

Purging Cells in Mice Is Found to Combat Aging Ills

          Recently, researchers discovered a special category of cells, known as senescent cells. These cells promote the aging of tissues. They hope that by cleansing the body of the cells, they could postpone many of the diseases of aging. Scientists performed a couple of experiments, but many more will be needed before they know if drugs can be developed to help people live longer. They found that senescent cells accumulate, and therefore speed up the aging of tissues. A research team led by Darren J. Baker and Jan M. van Deursen at the Mayo Clinic in Rochester, Minn., has generated a strain of mouse and performed two experiments on them. In the first experiment, the mice received a drug that forced the cells to self-destruct. The mice’s tissues showed a major improvement in the usual problem of age-related disorders and the mice retained the fat layers in the skin that usually thin out with age and cause wrinkling in people. Dr. van Deursen’s work is the first to show that removing senescent cells is beneficial. The discovery that senescent cells seem to be the cause of tissue degeneration opens out a new direction for researchers on aging to explore. In a second experiment, the mice were not given the cell-cleaning drug until they were middle-aged, however, aging was still delayed in their fat and muscle tissues. Dr. Campisi of the Buck Institute, said that the purpose of the research was not to make people live a thousand years, but to increase health span.

          I believe that this article affects us greatly. The discovery of these cells and there use is a big achievement. This finding may be the result of people living a healthier and longer life. Another benefit would be that people would still look young at an older age. If scientists develop a drug to get rid of these senescent cells, humanity will be greatly affected by it and the further generations will adapt better traits.

          I found this article very interesting to read. I think that this is a helpful and amazing discovery because; the development of a drug would lead to a beneficial life for everyone. I think it would also eliminate women’s’ use of botox, because it would have a similar affect, but in a healthier way.

 posted for Joanna Rymarowicz

Dino-Era Disaster: Multiple Drowned toothy Birds

 

According to MSNBC’s article, there were a group of birds that settled near a large river in Transylvania during the Mesozoic era. These birds lived next to the river for some time, until the river flooding drowned them out. The birds then died and fossilized. What only remained were some broken eggshells and fossils. This gives scientists more information than most would think. This can tell scientists that the water was only a few feet above where it would normally be, and came in, swept up the eggshells and a few adult fossils and dragged them out to a shallow depression, possibly on the other side of the body of water.

     I think the article could have been improved by adding more information about the birds themselves. The reader is given very little information about what the fossils have told us about the birds. Another thing I think would have made the article better is giving the reader more necessary information and prioritizing. The reader reads all about how the water moved the fossils, but not about where this location is (more specifics needed) and what genus, species, or even family these birds were from.

     Overall I though the article was very interesting and gave the reader important information about an extremely new discovery. The reader was informed on all the important information and made it clear and easy to grasp as a concept.

Dino-Era Disaster: Multiple Drowned toothy Birds

posted for L. Sapon

Purging Cells in Mice Is Found to Combat Aging Ills

          Recently, scientists have discovered that there is a type of cell that are called senescent cells, and are bad cells that participate in the aging of the tissues. Scientists are trying to determine if there is a drug that will be able to stop these cells so that people will age less and the tissue will be able to continue being healthy. Seeing if the drug will make people live longer is something that must be tested and is highly unlikely. In order to continue out some of the experiments a research team led by Darren J. Baker and Jan M. van Deursen at the Mayo Clinic in Rochester, Minn., has generated a strain of mouse in which all the senescent cells can be purged by giving the mice a drug that forces the cells to self-destruct. Researchers reported online Wednesday in the journal Nature, the mice’s tissues showed a major improvement in the usual burden of age-related disorders. They did not develop cataracts, avoided the usual wasting of muscle with age, and could exercise much longer on a mouse treadmill. They retained the fat layers in the skin that usually thin out with age and, in people, cause wrinkling.

           I thought that this article could have improved by first letting us know the mice’s condition with aging. Learning more about the mice’s precondition would’ve helped me get a better perspective of how the mice respond to the tests. I also would’ve liked to have more information on the drug that is being tested to help with the aging tissue. I think that if we were able to know what effects the drug have and how long the process usually takes. Unfortunately the facts aren’t available to readers due to the fact that tests have not yet been completed.

           I overall thought that this article was extremely interesting. I thought that it was an awesome fact that scientists are working on preventing old age and keeping aging tissues. I also thought that the results of the mice was a remarkable discovery and I look forward to hearing about what effects this drug will have on people themselves. 

Purging Cells in Mice Is Found to Combat Aging Ills