SCRIBE!

Hey guys! It's Tessa N heree. So today in class we found out that FRIDAY is Mrs. Steins last day! :'( but... we are gonna have a baby showerr party! So don't forgett to bring food... Haha anyways we started off by going over the plant of the day, the string of pearls, also known as senecio rowleyan. Then we continued to review transportation, roots, and monocots vs. dicots. Transportation is the process by which water moves up a plant and out of a leaf. We learned the structure of roots, such as the cortex, stores food. Monocots and dicots both have vascular bundles, however the way they are arranged is different. Monocots have parallel leaves, 1 cotyledon, multiples of three flowers, and have fibrous, multiple roots. Dicots have branched leaves, 2 cotyledon, multiples of four or five flowers, and have a taproot, or a big main root. We then ended class by working on our flower labs for the last 15 minutes.

SCRRIBBEEE!

Hey guys!

SO, yesterday we learned about the SPIDER PLANT. Pretty much looks like a normal green plant, but with little spidery-looking things at the end of the leaf. After that, we review a tiny bit before our photosynthesis and leaf quiz! yay. quizzes. Once we finished that up, we started a lab that dealt with the investigation of plants! Some things like tropisms and monocots and dicots, which we will continue to do on Wednesday and thursday. So yeah thats pretty much it, peace out. Have a lovely rest of the week everyone! :)

Scribe of the day

Hey y'all its catie here!

In class today, we...

-Discussed our pigment labs

-got grade reports

-began the lab on UP 73-76

-& discussed photsynthesis.

We spent a lot of time talking about photosynthesis. REMEMBER, WE HAVE A QUIZ ON IT TOMORROW!

Here's the scoop on photosynthesis:

-It all happens in the CHLORPLAST

-The STROMA is the name for the open space of the chloroplast

-The GRANUM is the 'stack of pancakes'. This is where the Light-Dependant reactions occur

-The 'pancakes' are called Phlatoids, and contain chlorophyll (which is the pigment nessecary to undergo phtosynthesis!

-The 'pancakes' also contain electrons

LIGHT-DEPENDANT reactions:

-Light comes in and hits the electrons, which gets them excited! Their energy level shoots up

-This splits the H20 molecules (which releases oxygen)

-Then, the electrons loose energy to form ATP

-The now split (or lonely) H+ molecule and NADP forms NADPH

-This carries nessecary energy to the CALVIN CYCLE

LIGHT-INDEPENDENT reactions: (a.k.a Calvin cycle)

-C02 is added to a 5 carbon sugar

-Engery from NADPH and ATP are used to carry out reactions

-Produces sugars (glucose!)

-DO NOT call this the 'dark cycle'! BECAUSE IT DOESN'T have to happen in the dark! This cycle doesn't care if its dark or light, it will still happen the same

OKAY BYE

SCRIBE--MARCH 7

HEY EVERYONE!! kelly here with the scribe post

so today in class...

• Mrs. Stein stamped our homework homework from last night which was UP 79&80.
• then we talked about the PLANT OF THE DAY which was living stones which are plants that look like rocks so that other animals won't eat them
• we also answered the question on page 61 in the unit packet which was about energy
• later we reviewed the functions of the structures in leaves:

1. upper & lower epidermis- protect everything inside the leaf and prevent tearing
2. cuticle (cutin)- prevents water loss
3. spongy mesophyll/palisade mesophyll- photosynthesis
4. stomate- gas exchange (takes carbon dioxide in, releases oxygen) & releases water (transpiration)
5. vascular tissues (vein)- tranportation

**TONIGHTS HOMEWORK IS UP 67&68**

**8.2 & 8.3 ARE DUE FRIDAY WITH UP 81-85 OR CORNELL NOTES**

SCRIBEEEE

Hello people of 8th period biology! Sooo yesterday we started class with our last two commercial presentations (which were awesome!!!!!!). Then we went to our POD which were a baseball plant, and a venus fly trap. The baseball plant is very interesting because well it looks like a baseball! It grows in the desert, it is the type of plants that absorbs water and stores it (like a juicy steak). The venus fly trap is very cool, it makes a sweet lining of nectar to attract flys. When the fies come over and start eating the nectar the venus fly trap have six hairs, if two are touched with in twenty seconds of the fly landing on it, it automatically closes. After that we took a quiz on our plant reading. Then, we talked about our presentation project!

Scribin' it Up! Tuesday

Hey! It's Kara S. Today we briefly went over characteristics of invertebrates, because after today Mrs.Stein is sooooo done with them! We completed quite a pleasant lab, observing the comparisons between crayfish, spiders,and grasshoppers. We have our Unit exam on Thursday I believe! That's All!

Scribe

Hey its Jon witht he scribe for today. As soon as we all sat down, we got our AOD!!! "Animal of the Day". Today it ended up being a Dumbo Octopus. Very little is known about this organism accapt for that it live in extreme depths, and may grow up to be about 20 cm long!! It is part of the domain Eukarya, kingdom Animalia, and phylom Mollusca. After that we quickly got working on our 2 labs, UP 13-14, andd UP 19-27. We got to observe many different Invertebrates which was a blast! We even got to touch some cool creatures. We alos get tomorrow to work on our labs which should be really fun...next scribe is.........MARK :)

Scribe

Hey its Jarod here with todays post. When we walked in today a weird butsome what funny video was playing and we had to grab the animal of the day slip. when everyone was settled we were told that the animal of the day was a weird looking animal called a Axolotl. This is also know as the mexican walking fish because it has little feet that it uses to help it swim. Its class is amphibia. It is native to mexico and a cool fact is that it is use in scientific experiments because it can regenerate most of its body parts, a characteristic that we don't have. Once we got past the animal of the day we learned about 6 different invertebrate animal phylums. We talked about Porifera, Cnidaria, Platyhelminthes, Nematoda, Annelida, Mollusca, Arthropoda and last but not least Echinodermata. I am not going to go in to detail with every thing that we talked about today. Our homework was to read 26.1 and to finish the green chart. During class today you could have actually got a lot of stuff to put on the green chart but you didn't have to. Other homework is to finish the animal profile and do your reading list. The scribe for tomorrow will be.......................Jonathan b. Good luck!

Scribe Post =)

Today was a typical day in a BIO. Fun as always! Got to love 8th period Bio. =)

We reviewed what a half life was and how it plays a part in EVOLUTION.

We reviewed by doing an extra problem in our packet on page 29 problem B. =(

Next, we went over the quiz that we took on Friday on 19.1.

-We talked about the difference between mass extinction and background extinction. Coevoltion which is the process by which 2 species evolve in response to changes over time.Also,we learned adaptive radiation was when a small group evolved over a short time into several different forms (beaks) that live in different ways. This takes us back to how the finches evolutionized their beak to adapt to their envoirment.

3. Lastly, we finished it up with a lab! doing a lab is a very helpful way to understand evolution and the many topics that come with it!

-We measured the head and the width of the jaw to see how are brain, head and teeth evolutionized from big jaw to a round one!

Class Reflection

Today in class, we talked a lot about half lifes.

That's the time period it takes a certain type of substance to decay and decrease by half.

To help tie the lesson in with a lab we used M&Ms as an example. Starting with 100 separate pieces we put them in a cup and shook them for ten seconds, then pour them onto a plate and remove all the ones with the labeled side 'm' up. we kept doing that for ten seconds 6 times collecting the data on a chart. Then in the packet we filled out all the questions and made a line graph on our data.

of course after we were done with the lab we got to eat the M&Ms!!

**dont forget to finish up pages 31 and 32 in the packet for homework!!**

and finally...CONGRATS TO THE GIANTS :)

Scribe!

Hey it's Allie!!!!!Today in class we turned in our Lab 40 the Grasshopper leg one... which by the way was absolutely DISGUSTING!! after we took a quick quiz about our 19.2 reading, we worked in our packet, which was about time periods and eras of evolution. Finally, we were watched a video. It was really interesting on the theories about how dinosuars went to extinct.

Scribe post:

Hey its Jessie.

In class today we reviewed the blog post from yesterday (homologous structures, analogous structures, vestigial stractures, comparative embryology and molecular biology) and talked about GENETIC VARIATION, GENETIC DRIFT and SPECIATION.

GENETIC VARIATION:

-the change in frequency of allels due to natural selection

GENETIC DRIFT:

-the change in gene pools of a small population due to change(wind blew them away, fire, hurricane,ect....)

SPECIATION:

-when species develope into new species (NEEDED- reproductive isolation)

we also measured the legs of dead grasshopers, YUCK! and compleated a lab.

Scribe:Evidence Revolution

Hey guys, it's Eunice L.
Today, we reviewed Darwin and Lamarck. Finding similitaries and differences between both of their theories. We then moved onto Evidence Revolution.
HOMOLOGOUS STRUCTURES
Are similar organisms that adapt to different enivronments in which the functions of appendeages are changed.
ANALOGOUS STRUCTURES
Are different organisms that started to live in similar environments in which the functions of appendages evolved, performing the same function.
VESTIGIAL STRUCTURES
Are structures that continue to remain in organisms but have no fuction. Such as leg bones and the pelvis in snakes and whales.
COMPARATIVE EMBRYOLOGY
By obeserving embryos of organisms, embryos that are similar are found to be more closely related.
BIOCHEMICAL EVIDENCE (MOLECULAR BIOLOGY)
The relationship of amino acids and DNA sequences. Such as how a chimpanzee's and a human's hemoglobin are alike.

Don't forget the Endangered Species Project!

Here are some videos about Evolution
http://www.youtube.com/watch?v=uAZmLYWEPGk
http://www.youtube.com/watch?v=yVqJ_mQazik
http://www.youtube.com/watch?v=qBauu1PyOxw&feature=related
The last one I'm not sure if it has much to do with evolution, but I think it's pretty cool.

Evolution-Scribe

Hey guys! So sorry I forgot to do this yesterday. Yesterday in class, we started Unit 7 which is called, "Evolution". Evolution is defined as the changing of species over time. The amount of time that we are talking about is hundreds of millions of years. A very important man who brought this idea up was Darwin. His theory stated that species can change over time. This idea came up when he noticed how creatures could be different from one island to the next. This changing can either be beneficial to the species or can affect the species negatively. A negative effect can result in extinction because their new or old adaptions (characteristics) may not fit in with its environment. When most people think of the word evolution, the first thing that comes to their mind is that us as humans, evolved from apes/monkeys. But, the truth is that we share a common ancestor with apes. So to conclude, we all are apes.

SCRIBE!!

HEY EVERYONE! It's Allie, and today was Tuesday, January 10. In class we reviewed the Menstrual Cycle, and for the rest of class we watched clips of a video. We went over the 1st, 2nd and 3rd trimester, and DELIVERY!! FUN? Yeah I know. What we learned was, in the 1st trimester the head is massive compared to the body, and the placenta is the life support for the fetus. 2nd trimester to start out the fetus is no bigger than a fist, and by the end of the trimester the fetus starts to mimic normal movements such as swallowing, and grasping. 3rd trimester the fetus gains weight FAST, he/she can recognize their mothers voice, and can recognize and move to music (if it's recognized). During delivery, the cervix has to open 10 centimeters, and any where around 2 weeks a way from the due date is safe for the baby to be born. AND REMEMBER STUDY FOR THE TEST THURSDAY!!!!!!

SCRIBE!!

Hey guys!! Sooooo, today we started off class going over some homework. We went over and reviewed the menstrual cycle. Something that helped me remember how it worked was the little chart thing Mrs. Stein wrote on the board that kinda went like this. HYPOTHALAMUS -> PITUITARY GLAND -> FSH & LH -> OVARY -> ESTROGEN & PROGESTERONE. ( LH and progesterone are linked. Whereas FSH and estrogen are linked.) Then the second half of class we took some notes on the idea of contraception, fertilization and implantation. Pretty much the main idea of contraception is to keep it safe when you have sex. But the safest plan is to practice abstinence so there is no possible way to have a baby. Then fertilization and implantation was pretty much just that the fertilization occurs in the oviduct and that there are some cell divisions that we should know about like, the embryo, the morula, and the blastocyst. So yeah, that what went down. Then we went home. :)

Scribe of the day YAY

Hey guys it's catie! So i forgot to post last time...sorry about that. but here's what we did in class today!




We learned all about the Menstrual Cycle and how it runs!



~It is regulated by negative Feedback Mechanisms. It all starts with the hypothalamus, who controls the pituitary gland. Responding to low Estrogen levels, it signals the pituitary to secrete more FSH (follicle stimulating hormone) and LH.



~Then, the follicle (EGG!) develps, which releases more estrogen. This 1st half of the cycle is called the FOLLICULAR phase.

~Next comes Ovulation, where the egg is released.

~Then it's the Luteal Phase. Here, uterine lining builds up. The egg can get fertilized.


If the egg is NOT fertilized, this cycle starts all over again! woo hoo!

****

The chart displays how each gland produces the hormones of the menstrual cycle. (Sorry it's not lined up well...i drew it on paint). Basically, FSH triggers the Ovary to produce Estrogen (that's why they both have purple stars) and LH triggers the Ovary to produce Progesteron (green stars).

******
We also learned a little about contraception today. Contraception means to stop fertilization. In other words, BIRTH CONTROL! There are many different form of birth control, such as pills, condoms, etc. But abstinence is the only 100% affective way to prevent pregnancy.

SCRIBEEEE!!! YAY

So this is Sarah! with me late scribe post..... Any who what we did in class on tuesday!First we started with going over our chart from 34.3 reading I believe haha. The chart was about Internal and external fertilization and development. External fertilization is when the eggs are fertilized outside the body of the egg providing individual. The requirements of external fertilization are; Large number of gametes, and water. Internal fertilization is when the eggs are fertilized inside the body of the producing individual. External development is the same as external fertilization except the child or children are developing outside the body. Internal development is the same as internal fertilization except it is when the egg providing individual is carrying the developing baby inside the body. We also talked about the goals for the male and female reproductive system. Some examples for the female reproductive system are producing eggs, developing the baby, providing nutrients for the child inside the female, etc. Some goals for the male reproductive system are producing sperm, successfully transferring sperm to the female, etc. Finally we finished our video about all types of animals producing babies like, whales, fish, baboons, and many more!!! Well thats all for now! (:

THE WHAT? THE MENSTRUAL CYCLE!

Ello! It's Rachie In the beginning of class we went over the Male and Female Reproductive structures where you could match the word to the correct parts. You can find it on Moodle if you want to practice!

Second, we learned about the Endocrine System. Which regulates MANY bodily functions and maintains homeostasis. In simpler words, it influences almost every cell, organ, and function of our bodies.

Next, we went over slides about the Male/Female Secondary Sex Characteristics.

Male:

During puberty, FSH stimulates testes to produce testosterone.

Your probably wondering... what in the world does FSH stand for!?

F ollicle

S timulating

H ormone

It is released by the pituitary gland. Testosterone causes:

• Larynx to enlarge
• Broad Shoulders
• Facial/Pubic Hair
• Muscle growth

Female:

During puberty, FSH stimulates ovaries to produce estrogen. Estrogen causes:

• Breast development
• widening of hips
• menstruation

Last but not least.... the MENSTRUAL CYCLE!

Remember: Hormones regulate the menstrual cycle.

If you want a little laugh, watch this video.

But if you want to be serious... watch this one.

NEXT SCRIBE IS...................... CATIE W. <3

S C R I B E

After we turned in our homework and talked a little bit about the recent quiz we took about pedigrees and punnett squares, we discussed how people can prove what disorder someone has just by looking at them. You can do that by looking at their karyotype. A karyotype is the standard arrangement of all the chromosomes.
We then discussed how there can be 3 copies of a gene in the same chromosome. Those chromosomes are called trisomy 13, 18, and 21. The trisomy usually codes for Down syndrome, Edwards syndrome, and Pataynu syndrome. We also begin learning about Genetic Engineering which is changing DNA for practical purposes. For example, transgenic organisms have many applications in agriculture (make fruit grow faster, bigger, quicker, etc.). We finished off the day by watching a short video.