Muddiesnt Points!

Hi guys!
I'm sort of confused on the parts of the brains. Is there a good way to remember which part is which and the functions too?
Thanks!

Muddiest Points!

Hi guys!

I always get confused with xylem and phloem. I know their functions, but I get confused which function goes with which. Is there any good way to remember them?

Also, what is the function of a receptacle?

Thanks! :D

Scribe for March 1st

Hey guys!

Today in class we took notes about the plant kingdom.

The 4 characteristics of the plant kingdom is:

-eukaryotic

-cell walls of cellulose

-autotrophic, photosynthetic

-multicellular

We also went over the two plant of the day.

One was called a baseball plant and another one was called a Venus fly trap.

The details of each plant are on the mini sheets we got.

Then, we took a quiz about the textbook pages we read.

We had a choice of working alone or with a random partner.

After that, we talked about our homework and the project we will be starting (UP9-12).

Our homework is UP19 with section 23.4 in our textbook!

If you don't already know your group or which park you will be doing, make sure you figure it out as soon as possible!

Muddiest Points!

Hey guys!

I need help memorizing the classifications (family, class, etc.)!

Please tell me a good way to memorize them.

Also, I'm a little confused about the domain.

Can someone explain to me what it is and the examples of it?

Thanks guys!

Muddiest Points!

Hi guys!

It would be great if you could tell me the main differences between Darwin and Lamark. It would also be helpful if you could tell me the differences between hominoids and hominines.

Thanks! :)

Muddiest Points!

Hey guys!

I was reading and looking through the Muddiest Points to comment and I noticed a lot of people asked about "feedback mechanism", "negative feedback", and "positive feedback". I think I know what they are, but I'm not at that point where I'm confident enough to help others with it. It would be very helpful if someone can explain it. Also, I'm still confused about FSH and LH hormones. It would be great if someone explained what they are and what they do.

Thanks so much!!! :)

Wolf-Hirschhorn Syndrome

Wolf-Hirschhorn syndrome is a genetic disorder when there is a deletion of the short arm of chromosome 4 (shown on the image on the left). It is a contiguous gene syndrome, where chromosome is missing some materials. In most cases (90% of the time), this disorder is not inherited. The parents can have a normal arrangement of the chromosomes, but their children can inherit a chromosome 4 with missing pieces. Some get it from unusual chromosome abnormality. Depending on how much of the genetic material is missing, the symptoms vary. Deletion of genes called WHSC1, LETM1, and MSX1 are signs and symtoms of Wolf-Hirschhorn syndrome.

Signs and symptoms:

• Small heads
• Foot deformity
• Greek helmet noses (broad bridges continuing to forehead)
• Widely spread eyes
• Metal retardation
• High forehead
• Arched eyebrows
• Deformed feet
• Seizures
• Hearing loss
• Skeletal abnormalities
• Brain structure abnormalities
• Heart defections
• Undeveloped organs (urinary and genitals)

Diagnosis and detections:

• Facial appearance
• Growth delay
• Ultrasound
• Seizures
• Retardation
• X rays
• Renal Ultrasonography (to examine kidneys and brains)
• Chromosomal microarray (detects deletion of chromosomes)

Treatments and therapies available:

There is no specific treatment to completely heal this disorder, but there are ways to prevent some symptoms:

• Medication
• Gastrostomy feeding tubes
• Orthopedic surgery
• Valproic acid and antiepileptic drugs (for seizures)
• Physical aids – wheel chairs, hearing aids, etc.
• Surgery

Prevalence in population:

Wolf-Hirschhorn is a rare disorder, but can occur in all ethnicities. It is said that it occurs once every 50,000 people and occurs in females twice as many as the males. The reason for this disorder being more common in females is yet unknown.

Life expectancy:

The exact life expectancy is unknown. Most people with this disorder die right away when they’re born or die after a little while they’re born. In the past, people with this disorder died right away. But now, more people tend to live longer. The oldest person to have this disorder and be still living today is said to be around 62 years old (born in 1949). 1 out of 5 children live about 2 years and the rest live between the ages of 18 and 34.

Muddiest Points!

Hey guys!

I'm sort of confused on the steps of meiosis 1 and meiosis 2. I know it's similar to mitosis. Can someone explain the major differences of meiosis 1 and meiosis 2? Also, I'm sorry if this is too much work, but can someone reviewed the diseases that are important or that we need to know?

Thanks for helping me out!!! :)

12/06/11 Scribe

Hey guys!!!! :)

Today we had a bit longer class time than usual so we talked about *eh hem* a man getting pregnant...But putting that aside...

Today we had an assembly so we went there first. After we got back, Mrs.Stein checked our homework (UP47-50) and stamped our stamp sheet. Then we talked about our homework and reviewed the problems. After that, we took some notes. Here is a little bit of the notes:

pedigree-used to trace diseases through a family

probability-chance of something happening (expected and actual)

autosomal-NOT sex linked (any-male and female-can be carriers-carry the disease but not be infected)

sex linked-only female can be carriers

*This is not all the notes. For more information, look at 14.2 in the textbook*

We talked about a lot of interesting things. One of them was about twins. For fraternal twins to be born, there are 2 eggs produced in a woman and 2 different sperms are joined with it. For identical twins to be born, one egg is produced and joined with a sperm, but later divides.

We later then moved on to a new topic. I'm not sure how it started, but we were talking about a man who got pregnant. Thomas Beatie was born a woman, but later changed to be a man. He married a woman, but she had to undergo hysterectomy, the removal of uterus. Thomas still has his (her) female reproductive organs which allowed him to get pregnant. Here is an article about it:

http://wizbangblog.com/content/2008/04/03/woman-calling-herself-a-man-gets-pregnant-liberals-cheer.php

I wanted to look more deeper into it so I searched on youtube for some videos. It made me sad because a lot of people were being very disrespectful to Thomas. They even made phone calls calling him an "it" and not a human. There are 5 parts and it is a bit long, but i really liked it.

Part 1-http://www.youtube.com/watch?v=jho1UCPDqXg

Part 2-http://www.youtube.com/watch?v=1wbIoOrZNNY&feature=related

Part 3-http://www.youtube.com/watch?v=SwDRJD4QX9Y&feature=related

Part 4-http://www.youtube.com/watch?v=wvhA8zqIhqs&feature=related

Part 5-http://www.youtube.com/watch?v=WCmT7PYeqlY&feature=related

That wraps up everything for today. Oh, by the way, sorry it's not that good as everyone was expecting... You guys were pressuring me! >_< I wasn't sure how to write it so I put links. It's really interesting and I suggest you watch it.

Homework:

-UP 51-52

-14.2-any reading strategy (there is going to be a mini reading check quiz!)

-UP 53-56-optional, but it is review for our quiz on Thursday! It's good practice!

Thanks for reading!!! :)

(oh and I added colors, but it won't show! :[ )

The next scribe will be: KASIA

Muddiest Points!

Hey guys!

It would be helpful if someone explained what plasma B cells and suppressor T-cells do. It would also help if someone explained acquired immunity and its sub categories.

Thanks!

Muddiest Points!

Hey guys! I don't really understand the differences between the rough and smooth endoplasmic reticulums. Also, I would like to know how the cytoskeleton, cytoplasm, and lysosomes look like in a cell diagram when labeling them. It would also be great if someone explained the steps of mitosis in a more simpler way so it's easier to understand. Thanks! :)

Muddiest Points!

My muddiest point would mainly be the difference between food chains and food webs. I know a food web is formed by many other food chains, but then what's the exact definition of a food chain? I would like to know a clearer difference. It would also be helpful if someone explained a little more about the pyramid of energy. Is pyramid of energy just that the producer gives 100% energy to first-level consumers, then 10%, then 1%, then 0.1%? I would also like to know more about the first, second, and third level consumers. Thanks! :)

Review of Class

Today in class, we took notes on section 3.2. We covered the topics: levels of organization, energy flow: producers, energy flow: consumers, food chains, trophic levels, and the food web. In addition to our notes, we had three pictures. They were about the levels of organization, trophic levels, and food webs. Then, we talked about the alien species. Alien species are species of organisms that don't naturally belong where they are right now and are most likely harming the other organisms that live there. We talked about the small project and about different kinds of organisms that are harming the environment they're in. Finally, we continued our Duckweed lab. We checked our control duckweed and wrote down the number of duckweeds on our paper. Then we checked our experimented duckweed and wrote down the number for that too. We ended the day like that.

The next scribe will be HYEON.

First Unit Reflection

I thought we started off great. I liked how the first unit was about a lot of things we learned before because I'm sure a lot of people forgot including me. It was a great review and it helped a lot. Especially with the microscopes and the vocabulary for controlled experiments. I forgot a lot about the microscopes and the review helped a lot. I understood better and now I think I can use the microscope without making too many mistakes. Also, the part about the controlled experiments helped a lot. It had words like independent variables, dependent variables, controlled variables, and more. Of course I already learned those before, but reviewing it helped me refresh my mind and understand better. The explanation about when to use which data helped a lot too. I also thought the Mexican Jumping Bean lab was fun. It's been good so far, but I know it's going to get harder. I hope I can do great in class!

Glee!

My favorite television show is "Glee"! Glee is a musical and also has comedy and drama. Glee is about a bunch of high school students' daily life and their life in school. They're in the glee club (called "New Directions") with their club teacher (Will Schuster). This show is mainly about being yourself and not letting others bring you down.

I really like this show because anyone can relate to it and it's very inspiring. If you see the Glee movie (Glee: The 3D Concert Movie), a lot of people that are inspired by Glee are on it. They tell their story and how Glee has inspired them to change. I think that's really great. I also think it's important to be yourself and not force yourself to change because of others. There can be tough times in high school and it's important to stick up for who you are and what's right. Glee teaches kids about being yourself and one of the things that I think are great is that everyone has a chance to relate to it.

In the show, there is this one episode where the students wear t-shirts with things that they are most embarrassed or ashamed of written on it. I think that was pretty cool because it's really hard to do that and just show everyone that you're ashamed of something. I know it would be hard for me too. They also sing a song (Loser like me) about how if the others knock them down, then they will just get back up and be better than them. I really liked they lyrics and I think it was really meaningful.

Overall, Glee is a great show! I recommend high school students to watch it since you can relate to it more. There are 2 seasons so far and season 3 is coming out soon! (There is also a movie and a show called "The Glee Project") Thanks for reading! :)

What am I most excited about?
New clubs, friends, teachers, and more

What am I least excited about?
There's so much homework and I hate every single quiz and test. Also, there's finals which will be so hard!