Muddiest Point

Hey guys!
So I'm a little confused about erythrocytes, leukocytes, and platelets. If someone could tell me their similarities and differences thanks!

Muddiest Point

Hey guys. I'm a little confused on the differences between a dicot and a monocot. If you could help me with that that'd be great! Thanks!

3-2-12 Scribe

Hey guys!....

For today we were supposed to go to the IMC and research on our national park projects. But we didn't because the network was down. So we had a change of plans....

Today our Plant of the Day was the Sensitive Plant also known as the Mimosa pudica. It's native to Brazil so it probably will die before we see it flowers bloom.

We also went over the National Park Project. Remember to have 3 different species/kingdoms of plants. Also, please don't say any words that you can't pronounce. For example, you don't have to say the plants scientific name.

We also took some notes about the plant prequiz.

• The Plant kingdom rose from the Protista kingdom
• Plants need Gas Exchange. --> For Photosynthesis and Cellular Respiration
• Plants need Sunlight
• They need Waters
• They also need minerals
• Also a true water-conducting tissue are actually vascular tissue. When you have this kind of tissue the organism is tall or grows bigger. For example, big trees are big because they have this tissue. So the water they get from their roots are carried all the way to the leaves on top of the tree
• Some problems plants may have faced was that the sun might dry them out because they were used to being surrounded by water.
• Another problem is reproduction --> Spores would dry out.
• Seeds are embryos, which becomes the new plant, they store food and protects them from drying out

Lastly, we did a lab. It's Lab 25 from our Bear lab book. Because we didn't have a lot of time we only had time to draw our pictures. We were to draw in a cross section of leaf from a microscope at high power. We also had to label it. The next picture was a picture of a Wandering Jew Leaf. We also had to label a couple of things about it.

Today's homework:

• Finish the Leaf lab
• Work on your national park research (UP 9-14)
• Review section 8.1 with UP 79-80 due Wednesday

Muddiest Point!

Hey guys. Can someone please explain to me what exactly is the difference between Platyhelminthes, Nematoda, and Annelidas? Thanks!

Muddiest Point

Hey guys. I'm a little confused why Lucy, Australopithecus, is not our ancestor, but is our relative. I'm also kind of confused about how Darwin developed the theory of natural selection. If you can help me out that'll be great! Thanks!

Muddiest Point!

Hey guys. So I've been confused about the difference in the menstrual cycle when there is a zygote and when there isn't. Is there anything different or what are somethings that are the same?Thanks!

Wolf-Hirschhorn Syndrome

Wolf Hirschhorn syndrome is when a mutation occurs in the Chromosome 4 or a little piece of it is deleted or lost. This is normally not inherited. It is an accidental or natural disorder. Both parents could be healthy and have no deletion in Chromosome 4 and still have a child with the disorder because while trying to produce a zygote the chromosomes might have been rearranged or were accidentally deleted. This disorder affects peoples' physical appearance and how they are mentally as well.

Signs and Symptoms

• Distinctive Facial features- wide set eyes, broad nose, prominent forehead
• Slow growth
• weak cry during infancy
• heart defects
• seizures
• any form of retardation
• difficulty to swallowing food

Diagnosis and Detection

• Because the distinctive facial features they children that are born could be diagnosed with it just by how they look
• Ultra sound
• X rays by looking for bone or internal mutation

Treatments and Therapies

There is no cure for the genetic disorder directly, but there are things that could help some of the symptoms. For example, for the seizures there are medical cures for them. For food they could use a gastronomy feeding tube. For muscle strength they can go through physical therapy.

Prevalence in the Population

About 1 in 50,000 births have the disorder. It affects women more than it affects men. It occurs to all ethnic backgrounds.

Life Expectancy

The life expectancy is unknown because normally people with this genetic disorder would die as soon as they are born. But for those who survive they live to they are 45 or they live to they are 20. It is different for everyone.

Muddiest Point!

Hey guys. So the main thing I've been having problems with and about are haploid cells. I don't understand what they are and why they are so important.. Sorry and thanks if you can answer my question!

Scribe post

Hey guys!!

So the first thing we did when class started was get our stamps for last week's homework.

But as we Mrs. Stein was walking around class giving stamps we talked to our group members, people sitting nearby us, about the homework and helped one another out! Last week's homework was to solve punnet squared for sex linked and multiple alleles. If you need more help on these then check out Julia's post!

Then we went over the answers.

We also reviewed what the different hybrid blood types!

Our new lesson is on Pedigrees!! This is a good example of a pedigree chart. Pedigrees are used to trace a disease, or a certain trait, through a family. Males are as shown above represented by a square and females are represented as a circle. Individuals that are affected by the disease or trait are shaded in. In a sex linked problem carrier females are shown as half shaded circles.

We also have a quiz on Thursday and we must know how to solve all the different punnet squares. If you need help then you can do UP 53-56. The answers will be posted on Moodle if you need them. There will be similar problems that will come up in the quiz! So study!!

For homework today we have to do....

• UP 47-50
• Read 14.1 (IF YOU DIDN'T READ IT THIS WEEKEND. But you can read it for fun as well!!)
• WE HAVE A QUIZ THURSDAY!!

If you have presents for Letters to Santa then bring them in tomorrow to class or to the SAC!

Muddiest Point

Hey guys! I'm a little confused out the difference between a B cell and a T cell. I think I know what each does but I'm still confused. Thanks!

Muddiest Point!

Hey guys! The part that confuses me the most is the difference between the Rough ER and the Smooth ER. I know that ribosomes are in the Rough ER. But, why isn't there any ribosomes in the Smooth ER?
Thanks!

Muddiest Point!

Hey guys. What I don't really understand is that identifying factors that limit population growth. I think I have the right idea about it but I don't really understand it that well... Can someone please expain to me in more detail the differences of a density-dependent factor and a density-independent factors are?


Thanks!

Review of the class 9/9

We did a lot of interesting things in class today. When we first went into the classroom we were given an elmo stamp for our stamp sheets if we did the homework.
Then Mrs. Stein explained to us our homework and taught us the difference between a Venn Diagram and a Double Bubble Map. A Venn Diagram has only two circles and a limited amount of space to write the similarities of the two subjects. Where as in a Double Bubble Map you can add as many circles you want.
Mrs. Stein then explained to us the Extra Credit that does not happen often. So if anyone wants to you should defineitly check the Extra Credit section on the blog for more information!
We then finished the notes that we had on Wednesday. We learned about the 3 pyramid.
Pyramid of Energy: This pryamid shows us that only 10% of the energy to one trophic level to the next is transfered. It also shows us that 90% of that energy is used in heat.
Biomass Pyramid: This pyramid shows us the amount of food on each trophic level. There is most likely a greater biomass at the base. For example, all the krills in the oceans weigh more than all the whales in the ocean because whales eat a lot of krill on a daily basis.
Pyramid of Numbers: This pyramid shows us approximately the number of individual organisms on each trophic level. Also in some ecosystems it's not shaped as a pyramid. An example, is that the pyramid could be shaped as a tree.
After the notes we counted our Duckweed lab, but before that Mrs. Stein found a problem. She believes that the lights in the back, where all the Duckweed are put, is too hot and are killing the Duckweed. Therefore we were given the chance to redo our expirement or just go with what we had.
Lastly, Mrs. Stein gave us time to do our homework for the Webquest.


The Next Scribe will be... JULIA!

First Unit Reflection

The first unit was actually kind of unexpected. It was unexpected because I felt like we went really fast. I haven't gone this fast in a science unit before. But, I understood what I learned so I felt that it was okay. I was sort of surprised doing labs on the first couple of days of school, but I really enjoyed it. I felt like the first couple of days were review, but that was expected. I'm kind of worried that if we learn things fast, like we did this week then I might become confused. I'm a little excited for this year in science because we are doing a lot of labs.

Kendo

Kendo is "The Way of the Sword". I practiced kendo for 2 years. Kendo is a physical and mental activity. Kendo doesn't just mean you carry a bamboo sword, called a shinai, and start swinging it around. There is a lot of meditating as well.
There are 8 dans, or levels, of kendo. You must have at least 1 or 2 years of training to go to the next dan. I was on the 3rd dan after 2 years of training. To go up a dan, then you must take an exam where all the masters watch you do a series of demonstrations and then have a match against someone who is on a higher dan than you. Passing a dan is somewhat difficult because there are not a lot of dans.
When you have a match against someone then you must first do something that's like a prematch. You first share "blows", take turns hitting each other's shinai, before you start fighting. Then, you start after you are done. When ever you are in a match you must call out where you are going to hit or else the referee will take a point off. You can gain points if you manage to get a hit. People often yell to scare or make the opponent flinch. There are many ways you can win in a match.
The clothes you wear when you have a match are VERY heavy. It's hard to move around in first. There are certain ways you are to put your armor on and certain ways to take your armor off. Even your regular outfit is actually a little heavier than it looks. But all of this is preparing you for real matches and real tournaments.
Kendo is a very fun, although hard, activity. I loved kendo and I still like watching some kendo matches, even though I quit. I would recomend it to almost anyone!
What I am most excited about this year? New books and more books! The library.


What I am least excited about this year? HOMEWORK!