» Campus Home » Send Email » Help  
 
    Mr. Sheppard
learning the mysteries of life sciences....50 minutes at a time!    
links & overview
www.roomd113.com/TAKS%20TEST.htm taks prep

www.s8int.com

www.khouse.org/articles_cat/2008/technical/ incredible resource about spirituality and science

www.cellsalive.com bringing invisible biology to life

www.unmuseum.org various stories about remnant species possibly still around.

Our classes will learn how living systems work. This will include cells and structure, the scientific method ( Hypothesis, the nature of science, experiments and how to design them, etc.). We will also learn the scientific and anti-scientific ideas about current evolutionary ideas such as mutations creating all of nature. Evolution 'theory' must be learned for TAKS and future college courses. Genetics is also a required topic and can be quite entertaining to learn about using traits of the student and their families. I will attempt to cover all living things on Earth and many extinct life forms. This could be anywhere from 1 to 100 million species! Ecology and the environment is another required topic. This includes how organisms interact ( predator/ prey, parasites, etc.) and recycling of different nutrients constantly such as Phosphorus, water, Carbon, and Nitrogen. Adaptations is possibly the most interesting subject in living sciences. A few examples are woodpeckers pecking twice as fast as a machine gun with their spiked tongue wrapped around their skull to turtles having no known life spans and are able to climb fences! Adaptations are advantages that allow a species to survive and reproduce. A pet quote from science history is from Einstein who stated "The most beautiful thing we can experience is the mysterious" and mystery is the reason for all science. Biology is one field where we learn so much new data that our textbooks will literally be impossible to lug around. Science data doubles every 2.5 years! So current events and the discovery of new species are often taught. Just one example is an average, quite by accident, of 7 unknown species of fish found every week!

My favorite subject if properly taught is DNA. It's discovery was in the 1940's and 50's and here is what we know for sure:
1.It is a digital, self replicating, self correcting, submicroscopic supercomputer that knows how to design every organism from a mushroom to a whale to a tree!

2.Your DNA, from one single cell, would stretch to the MOON!

3. Your DNA code if written in book form would fill the Grand Canyon with text!

4. The biggest mystery in biology, with nothing a close second, is the invention or accidental invention of DNA. Science simply has no idea where something this complex could come from.

Following DNA as a favorite topic is camouflage in various species. This seems somewhat uninteresting until you see my photos and remember one very important fact: No matter how incredible the detail, THE ANIMAL OR PLANT HAS NO IDEA WHAT IT LOOKS LIKE! even its behavioural camouflage is usually inborn.

On a serious note, almost the only children that fail the TAKS or class have 1 or both of these habits: truancy or cheating. With that being said, let's see some great photos and facts.
can you spot the carpet moth?
Can you imagine a bird without the ability to focus both eyes on one object finding it?!
soft coral crab camouflage
As you may have guessed, this is a newly discovered species.
giant anglerfish camouflage
Can you even find this animal? If you can find the eyes, you can find the mouth.
porcelain crab camouflage
pygmy seahorse
These are some of my favorites. About the size of your thumbnail, they perfectly match their coral home.
glass frog of the rain forest
Yes, complete with CLEAR blood, this see through frog hides from predators.
invisible shrimp
A great way to hide from fish and octopus!
There are no bees!
This should be the end of the old saying 'plants are boring'. These orchids mimic wasps and bees into carrying pollen from one plant to another, eventually leading to seeds. The way this is done (I didn't invent these!) is the flowers, somehow, smell and look like female bees! So males 'land' on them getting pollen all over the insect. Then they fly off to another bogus female for pollination. Some species even have false females on a hinge and the males continually ram their head (collecting pollen) while trying to fly away with "her"! This seems like proof to me that who or whatever invented DNA, definitely has a sense of humor. Searching for this on youtube should display a BBC clip from "the secret life of plants" showing this actually happen.
The end of all fishing stories..almost 100 years ago.
This animal was caught in 1911 and is the biggest freshwater fish species known. Sturgeon still live in American waters, but it is unknown if they grow this large because of overfishing. And no, I have no idea how he got the fish into the boat!
microbiology comes to MVHS
We have been under attack from a strain of staphylococcus aureus causing lumps and infections. (Students: how did I type the genus and species wrong above? The first to tell me in class gets a reward)Bleach and hand washing kill almost any bacteria. Strep throat presents a different problem. What this bacterium loves is: warmth, wetness, and SUGAR! What it can not survive in is SALT. This is why gargling with salt water instantly stops the pain and eating salty soup will heal it quickly. Remember, most bacteria love sugar, so avoid it during a bout with infection.
a very strange staircase story..
www.snopes.com/horrors/ghosts/loretto.asp

This story is slightly more interesting to biology students studying the structure of DNA (the now famous double helix). An added mystery is that the shape itself was almost unknown before the 1940's and 1950's. It can't be ignored that this curiously twisted ladder shaped molecule is profoundly changing our world every new day. I can't think of any way the carpenter could have known about the sturdiness of this so long ago.
©2007 Mount Vernon ISD - All rights reserved.