There are many different things that make up the structure of DNA. They are: deoxyribose sugar, phosphate group, adenine, cytosine, thymine, guanine, nucleotides, base pairs, and double helix. Now, I will not be able to get through them all, but here I go. I am sure you have heard of nucleotides, when we studied cells. The other terms, however, may be new to you.
One MAJOR term is the double helix. This is important because the double helix is what makes up/holds your DNA. Also, another few terms that are important are adenine, cytosine, thymine, guanine. One thing you NEED to know is that adenine and thymine always pair up with each other, meanwhile cytosine and guanine pair up. They never pair up with anything else. The amount that the DNA contains of it is also ALWAYS equal to the other. This information was found out by Erwin Chargaff. At first, people didn't think that this info was important, but later they realized this must be known in order to find out the structure of DNA. That's all that I have time for today, so google the rest if you'd like.
 
     Have you heard of the term "mitosis"?  I am sure you have heard it in your science class at some point.  It is basically the reproduction of themselves; it happens in eukaryotic cells.  They have a lot of DNA molecules, as you know, that control different parts of the cell.  There is actually a cycle that it goes through.  There are 5 phases.
     First the DNA molecules build identical copies from the proteins inside the nucleus.  Each DNA molecule that is older stays attached to its copy in the middle, making a lot of X-shaped DNA molecules, where one side of the X is a mirror image of the other side so the copies do not get mixed-up.
 
     How are these three things different and similar to each other?  That's the same question I am asking myself today.  Well, there are many differences and simularities.  One difference between the animal and plant cells are: animal cells do not have a cell wall.  Also, bacteria does NOT have a nucleus.  However, there are many, many more.
    They all have several simularities too.  In case you didn't know, bacteria is made of prokaryotic microorganisms.  Both animal and plant cells have a nucleus; and all three of them contain DNA.  All in all, these three things have many simularities as well as differences.
 
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In science, we just finished learning about cells and their organelles/parts.  It was a pretty interesting subject because I learned a lot of different things that I never knew.  Because of this section, we also did a group project called the "Edible Cell Project".  This was a group project and it required many things.
     Now Mrs. Poole is questioning whether this project helps us learn the parts and their functions or if it is just a waste of time.  I actually had no clue what the parts did or where they were located in the cell.  However, after doing the edible cell project, I have a better understanding of the cell organelles and their funtions.  Although I got my question wrong, I have learned a lot.  I had just mixed up two of the cell funtions.
     I think that the science teachers should continue this project because it really did help me recieve a better understanding of the cell organelles and their functions.  The other students should get the same oppertunity because not only was it educating, it was a fun way to learn about the different parts of a cell and their jobs.  All in all, this project is worthwhile, and the science teachers should continue this interesting way of learning the cell organelles and their functions.

 
     In science class, right now we are learning about cell organelles.  We are learning about what each organelle does to help the cell.  There are several different cell parts with very important jobs to do.  Each part has its own specific way and thing to do.
     One part of the cell is the Nucleus.  This organelle is very important to the cell because it is the "brain" of the cell.  It has specific duties in order to keep the cell alive.  Another part of the cell that I think is important is the ER or Endoplasmic Reticulum.  I think that this part of the cell is important because it helps transport energy to different parts of the cell.  These are some of the parts of a cell that I think are the most important in the cell. 
 
Day 3:
Head: 50mm
Tail: 20mm
Ratio: 20/50
Day 6:
Head: 55mm
Tail: 30mm
Ratio: 30/55
Day 9:
Head: 60mm
Tail: 40mm
Ratio: 40/60
Day 13:
Head: 62mm
Tail: 50mm
Ratio: 50/62
Day 45:
Head: 75mm
Tail: 110mm
Ratio: 110/75
     Above is a chart with the growth of the baby rats each day we measured them.  According to this information, the ratio of the tail lenght to the head circumference (listed above) changed each and every day the rats were measured.  All in all, the tail length eventually became bigger than the head.
 
     What was you favorite activity during quarter one?  Well, mine was the "It's Alive!" project.  I think this was my favorite because we got to measure and weigh body parts.  I know it sounds gross, and it was at first; but it was actually really fun.  Even though I didn't get the group with my friends, I still got a pretty good group.  I was not willing to touch the body part at first, but as time went on, I just decided to get over it.
     My group got the hand.  We were all grossed out at first, but eventually was fine.  We got to see our body parts grow, and now we get to see them shrink.  As we recorded their length and weight every day, our hand got bigger and bigger.  The hand also shrunk a little bit, then still grew.  All in all, the "It's Alive" project was definately my favorite projec
 
     Although you cannot feel your cells working inside of you, there are other ways you can tell.  For example, when you get hot, you can tell your cells are working because you start to sweat.  When you get cold though, your body shivers to try to warm you back up in order to keep your body temperature normal.  There are many more examples and ways to tell your cells are working inside you, even though you can't feel them.  Even if your cells were not working, you would be able to tell.  All in all, there are many ways you can tell if your cells are working or not.
     Every cell inside your body has one specific job, or thing to do.  For example, your nerve cells focus on sending signals to your brain, so your brain knows what is happening.  Each cell also has its own way of functioning.  They function the way they want and the way that they think is best.  As you can see, there are many different cells with different jobs to do; and each cell does its job a certain way.
 
     Do you look like your mom or dad?  I look like my dad, but people always say that I look more like my mom.  I have long browm curly hair, dark hazel eyes, and I'm tall for my age.  Both of my granmothers are short, but my grandfathers are both very very tall.  They are 6'0" and 6'3", while my grandmothers are 4'10" and 5'0".  I am supposed to end up being 5'8" but I'm oply 5'4", and I'm twelve, so who knows if I will grow anymore.  
     I get my looks from both sides of my family.  Personally, I think I look more like my dad, but others say I look like my mom.  However, that could just be because I'm darker like her and my aunt, and I have her eyes.  I'm not built like neither my mom nor my dad.  I am built more like my grandfather (my mom's dad).  I am pretty tall, I guess. Hopefully I still grow though.  I have a long torso, but short legs.  My legs are pretty defined, and you can see the muscles.  All in all, I think I look like my dad more than my mom.
 
     I do!  Getting the volume of an irregular shape is actually very simple.  First, you just fill either a flask, beaker, or graduated cylinder.  After you've done that, you then measure how much liquid there is.  Then, you insert the object you want the volume of and measure how much liquid there is now.  After all these steps, you then subtract the amount before from the amount after the object was inserted.  Then, you have the volume of an irregular object! It's just