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Miss Baker's Biology Class Wiki
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9th Honors Biology
Science Online '09
How Will I Meet This Expectation?
How Did I Meet This Expectation?
Demonstrate ability to
evaluate sources of
biology information on
Critique others work and their sources
to make sure their sources are credible.
If they are not credible than tell them how and where
they can find a credible source.
at all of Skye's sources in her post about horses teeth and counting their age. All her sources were legit, and i used one to get more information about horses. I also approved websites on the credible sources page. I approve Ians one source but said he should have more to seem more credible, you can see this
All of my sources ive used for information ive collected about brain evolution were approved by class mates. That means I know what good and bad sources are. Because of this my post can be found
on the blog site.
Demonstrate an ability
to read and understand
current biology news
Make sense of what im reading and if i
cant then ask someone who knows.
Do research by looking it up on google.
I read and understood information about brain evolution. By doing so i was able to write a post about it. This post gave me more insight to how great of a thing evolution is and how present it is in out world. The websites i used can be found
. The info i comprehended was good and on legit sources because my post is on the blog site
use of online resources
Use legit sources and ones without advertisements.
If others tell me that a source is not good then change
it using the advice they gave me.
I used a creative commons picture from flickr.com for my post about brain evolution. I also properly hyperlinked facts to the websites where i found out the facts.
Publish work that is
available for peer-review
Be open to criticism and take it as helpful advice. Ask
others to read it, and tell them to look for every mistake.
I posted a post about the Evolution of the Human Brain. It is at the botttom of my wiki page. By using evolution of the human brain i made it possible to apply things we've learned in class to my post. I provided possible questions too. Also kids are well informed about evolution, and because of this they can think about what we learn in class while readiong my post. Mt post got posted on the main blog site
Discuss published work
with a practicing biologist
in that particular field
Find one online through other biology blogs or use
resources to find one online and email him.
At the bottom of my wiki page under my post, you will find a response from a practicing microbiologist by the name of Rich Meyers. I sent him my post via email, he read it and responded. He told me how i could improve it, and also said that it is pretty good. Please take a look.
Tell my classmates what i think of their work and
help them make it better. I will do this by resarching their
topic and making sure all of their stuff is credible and correct.
I commented on the
aout our DNA lab. I said how it helped me learn and how it was a good thing to do. I also commented on Dylans post
. I also commented on louis's post, i provided him with approval of his sources saying they were all legit, this can be found
. I politely provided constructive criticism to ians post
on peoples posts. Giving them more info and asking them questions that I have about their posts. I
commented here and gave more info to the post.
Do the work so i can discuss it with knowledge. Also do extra
research so i can know information that others may not know.
I wrote a post and it included the topic of evolution. The post can be found at the bottom of my wiki page. We have been learing about evolution so i applied it to my post. I learnded more about evolution and how great of a thing it is. Also we talked about allopatric and sympatric evolutiuon in class. I commented on a post by Ms. Baker and gave more info to the post
Be original and dont copy off of others. Make things colorful.
Use topics that havn't been breached on by others.
This will not meet the expectation.
I made a cartoon to help people better understand the evolution of the brain
I made a comic and it is now on the main blog site along with my post here
Daviiiiiiddd,,, things i like about biology are, getting to do lab experiments, learning interesting things about my world, and getting good grades!
Some other things about me are i like to play lacrosse and listen to music. I like most music, just not country . MIKEY POWELL. sickest laxxer alive.
Cell Size Lab=
Cell Size Lab by missbakersflickr.
I loved the cell size lab!
The nucleolus is a prominent sub-nuclear structure that is not bound by a membrane and resides within the nuclear matrix. Though known to exist since the eighteenth century, the primary function of the nucleolus was not discovered until the 1960s. It is now been determined that nucleoli manufacture the subunits that combine to form ribosomes, the cell's protein-producing factories.
the size of the nucleolus is considerable, sometimes occupying as much as 25 percent of the total volume of the nucleus.
Through the microscope, the nucleolus appears like a large dark spot within the nucleus (see Figure 2). Eukaryotic cells often contain a single nucleolus, but several are also possible.
Each diploid cell in the human body features only one nucleolus
The nucleolus is comprised of granular and fibrillar components, as well as an ill-defined matrix, in addition to DNA
In recent years, scientists have been industriously investigating a possible connection between the nucleolus and cell senescence (aging). Most evidence for such a link thus far has come from studies with yeast cells, some of which suggest that cumulative damage to ribosomal RNA genes and fragmentation of the nucleolus may be central to the aging process
The Evolution of The Human Brain
By David G.
The human brain has evolved greatly overtime, from the time of cavemen to us. Lets try to better understand how this great thing has happened. On this
it is stated that at some point in history the human brain changed, and was suddenly able to compute, manage and store information like never before. All life originated from three fatty
( as stated here in
The First Human Brains)
. These same fatty acids now form the essential components of our eyes' photo receptors and our brain's cell membranes. The first living organisms did not have brains as we do today. It is said the
were found in insects. These early brains are more collections of ganglia – where hundreds of nerve cell bodies congregate. However the brain has evolved to be quite big. It seems that
have bigger brains in relation to their body size than their prey, giving them the advantage to create tactics and strategies to catch prey. When scientists put all the pieces together they found that the early humans who lived near water sources and ate seafood have experienced the biggest brain change. This is why many people say that fish is good for your brain. Stone age families living by the water would have been able to provide their families with specific brain nutrition. There must have been enough omega-3 and omega-6 fatty acids available in their diet to provide many generations with fuel for fetal/infant development as well as childhood and adult needs for the cardiovascular system and the brain.
I found a lot of info to help write this post and I think you will find useful information to help yourself better understand the brain and how it has evolved.
I made a comic strip of brain evolution
. Please check it out and let me know what u think.
Questions: Who has the biggest brain? Did all the parts develop at the same time? Who was the first human community to be full of brains?
Great post David
All of your sources look reliable. The information is in depth and fully explained.
one thing i did't understand was how the fish changes or inhances the human brain.
you could do a easy comic on how the brain has grown this will help with your creativity part of the blog assighnment
comment done by Dylan Dooley
I actually stated in my post that stone age families living by the water had a diet that helped enhance their brains. Families living by the water ate fish, and other seafood. I stated in my post "stone age families living by the water would have been able to provide their faimilies with the specific brain nutrition. There musthave been enough omega-3 and omega-6 fatty acids availible in their diet( and their diet would consist of seafood) to provide many generations with fuel for fetal/infant development as well as childhood and adult needs for the cardiovascular system and the brain." So i think that explains why people say fish is good for you. If it was not clear im sorry.
Thanks for the suggestion about the comic strip. I may look into that.
Good Post David,
I agree with dylan by far. This is outstanding I had no idea that fish are so important to the human development.
Comment done by Jordan
Rich Meyer- Dave,
From what I have read the information appears to be good, I would recommend that you find some references in the scientific literature to support the points you talk about in the posting. You can do a literature search on-line. I would also recommend you mention things like how different parts of the brain evolved differently in different animals compared to humans for specific purposes. An example would be that large areas of the human brain have evolved devoted to vision and in some animals other areas of the brain evolved largely devoted to smell.
Overall I think you are on the right track. Good look !
NOTES:Speciation: What is a species? A species is a group whoose members can interbreed and produce viable offspring.How does speciation occur? Through reproductive isolation and evolution, two populations become so geneticall dissimilar that they are no longer able to interbreed.Prezygotic (no fertilization) reproductive isolation.Temporal isolation- time reproducing.Habitat isolation- different places wont reproduce.Behavioral isolation- Showing off common features to mate. Mechanical Isolation- The parts dont fit to fertilize. Gametic isolation- Signals need to match to fertilize.
Postzygotic (after fertilization) Reproductive IsolationReduced hybrid viability- Reproduces but doenst survive.Reduced hybrid fertility- Offspring cannot produce offspring.Hybrid Breakdown- Offsprings offspring is steral. (cant reproduce.)
Evolution of a species can occur with or without geographic isolation:Allopatric speciation- With geographic isolation.Gene flow is interrupted or reduced when a population is divided into two or more geographically isolated subpopulations. One or both populations may undergo evolutionary change during the period of seperation.Sympatric speciation- Without geographic isolation. Speciation results from the appearance of new ecological niches ad nonrandom mating.disruptive selection- competition favoring fishes at either extreme of body size and mouth size over those nearer the average.nonrandom meeting- each size preferred mates like it favored a divergence into two subpopulations expoiting different food in different parts of the lake.
PCR NOTES: Scerd- sample collection recovery detection. Object, to detect micro organisms. POINT OF CARE(right on site detection). Anthrax is a bacteria. Cartridges. Polymerase chain reaction (PCR). Smart cycler was first generation. Gene expert eliminates post PCR processing. FC probes ( flourescent qressing). Allows multiplexing. Gene expert takes 30 mins while culture based and other pcr technlogy takes days.
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