IB Biology - Today we looked at some of the video projects on 7.2. You should have asked any lingering questions you had so I could clarify, but tonight I want you go very the material from 7.2 and make sure you get it all. IN order to be ready for tomorrow you should preview chapter 7.3, using the from of the chapter to know what you should know. You should also know that this is the last week for progress report 2. You will be receiving a homework score on Friday. Also, on Friday you should be ready to take the test on chapter 7
Honors Biology - Today we jumped right back in to where we left off on Friday by discussing your analogies. Then we started a new entry about how science can make our lives better, with our EQ being How can we help people with DMD. We then did a poll, and a "world cafe", to examine the pros and cons of having DMD people taking physical therapy. For tonight I want you to now answer the question of "Should people with DMD be allowed to play as children?" This should be written underneath the pro/con list you made in class. Now, read the short article I have attached below, and then give me a 3 sentence reflection on what you now think about people with DMD playing as kids or having physical therapy. In addition, this week ends the second progress report and you will need to get Parent Input completed in the back of your notebook. Also know that you will get your next homework score at the end of the week, so do your homework!
IB Biology - Today we saw some amazing videos (Stephen/Margaret you looked amazing) on chapter unit 7.3. At this point you should have a fairly good outline of what the process of protein synthesis looks like, but you should summarize and analyze what you know and don't know. Tomorrow and Thursday we will go over everything you need for this test. Come prepared.
Also, Now that you have seen the videos everyone can vote for the IB BIo Academy Awards: https://docs.google.com/forms/d/e/1FAIpQLScQKUJ_YAv_TqWLRYU7zWkqk_IRh-cIwC6EBqfjHnaTXhN2rg/viewform?usp=sf_link
Try this for practice: https://learn.genetics.utah.edu/content/basics/transcribe/
Honors Biology - Today we discussed whether or not people with DMD should receive physical therapy and you were able to define some parameters as to what is acceptable and why. Then we looked at gene expression in the following text and link. We digested the text and then created an analogy for the process. Tonight I want you to read the second piece of text posted below and to create a bulls-eye diagram on Becker's, DMD, and Healthy Muscle. This goes on your left hand page of the entry we started today.
OH, I will check the parent input tomorrow so please make sure you have your table of contents up to date as well!!!
Proteins are complex molecules made up of subunits called amino acids. There are 20 different amino acids and the different combinations of these is what makes one protein different from the next. There can be hundreds or thousands of individual amino acids in a protein. This amino acid sequence determines a protein’s structure and function.
Proteins can perform a lot of different functions: some proteins provide structure to an organism, some act as chemical messengers and allow different parts of the body to communicate, some proteins help with chemical reactions like digestion, and some proteins play a role in your immune system.
Proteins are made through a process called gene expression (sometimes referred to as protein synthesis). Gene expression has two major parts: transcription and translation. All cells have DNA in them. Recall from your previous science classes that DNA is the “code” for all of the traits an organism has. All of your DNA is contained inside each cell’s nucleus. A section of DNA that codes for a specific trait is called a gene. A gene actually contains the code for one specific protein. Cells read the section of DNA and make a molecule that is very similar to DNA, called RNA. The process of making RNA from DNA is called transcription. The special type of RNA made in transcription is called mRNA. The lower case “m” stands for messenger. Messenger RNA then leaves a cell’s nucleus and travels to another part of the cell called the ribosome. A ribosome then reads the mRNA and makes a chain of amino acids that will then fold into the specific protein. Making a chain of amino acids from mRNA is called translation.
Here's the website that showed a more detailed animation of this process: http://sepuplhs.org/high/sgi/teachers/genetics_act16_sim.html
Part 2 of Gene Expression
There is a section of your DNA that scientists have isolated that contains the instructions for how to make dystrophin. Scientists refer to this section of your DNA as the DMD gene. DMD stands for Duchenne Muscular Dystrophy. DMD is the largest known human gene. There is more than one kind of muscular dystrophy. We have spent most of our time discussing Duchenne’s. In this case, the DNA of a person with Duchenne’s does not code for the protein dystrophin at all. This means that people with DMD do not make any dystrophin. Another type of muscular dystrophy is called Becker’s. In this case, the DNA codes for some dystrophin or an incomplete version of the dystrophin. People with Becker’s MD have some dystrophin so their muscles deteriorate more slowly, meaning they have normal muscle function for more of their lives.
IB Biology - Today I focused on making sure that you have all of the factual information that you need to know for the test. As we prepare for this next unit test on Nucleic Acids, I keep emphasizing the idea that you must be able to think deeply about the concepts and I want to be clear about this. Two weeks ago, when you started your video projects, I gave you a list of the facts you should know and I leave the basics to you, but a handful of you still struggle to know what it means to think deeply, so I have composed a list of questions you can ask yourself to see if you deeply understand the material.
1) How does this concept/topic relate to the other concepts?
2) What would happen if "X" changed in this process?
3) How is this topic used in real life and what are the limitations?
4) Is this topic/process universal to eukaryotes and prokaryotes or do they differ?
5) When/When/How is this topic/process used in me?
6) What are the advantages and disadvantages of this concept?
7) If this process can go wrong, how and where would that happen, and what are they outcomes?
8) Would this process be the same in plant cells?
...and so on.
If you can go through each of the topics and answer these questions, then you are ready for the test, but recognize that I am here to help you through this process so ask me in the next two days for help if you need it. Oh, and I posted the powerpoint I used today down below.
Honors Biology - Today was a day to expand on our starting knowledge about DNA and the process of gene expression. Before we went to the online simulation( http://genes.inquiry-hub.net/ ) we watch the following video: https://www.youtube.com/watch?v=gG7uCskUOrA
Then when we did the simulation you did the following questions in your notebook: The first 6 were on the right, and the rest were on the left.
1. What do you notice about the DNA?
2. What happens when you push “Transcribe”?
3. What happens when you push “Release”?
4. What happens when you push “Translate”?
5. What happens when you push “Release”?
6. Write down the sequence of amino acids in the original protein.
7. Create 1 mutation and follow the steps you used before.
8. Write down the sequence of amino acids in the new protein.
9. How is this protein different from the original protein made?
We will pick this all up tomorrow so don't worry about doing any of this tonight if you didn't finish.
IB Biology - Here's a good video to watch: https://www.youtube.com/watch?v=gG7uCskUOrA
Here's a good review website:
And here are some practice quizzes that might help prepare you for the test tomorrow. https://www.biologycorner.com/quiz/DNA1_qz.html
Please know that the info we went over today is from the test so please focus on that.
Honors Biology - the online simulation( http://genes.inquiry-hub.net/ ) Please finish the two entries we now have for the simulation before tomorrow.
IB Biology - Today you took a test. Good job. Rest. On Monday there will be a murder mystery to solve!
Honors Biology - Today we sort of caught up with ourselves on the mutation simulations. Part of getting caught up included the following reading activity.
Mutations Background Information
Mutations are changes in the DNA of an organism. These mutations can be harmful, helpful or neutral (not having any impact on the organism at all.) There are three types of mutations-insertion, deletion and substitution.
Substitution mutations occur when a single base pair is substituted for the correct base. For example, if a section of DNA is ATTCG, the mutated strand could be ATTGG.
Insertion mutations occur when one or more base pairs is added (inserted) to a DNA sequence. For example, if a section of DNA is ATTCG, the mutated strand could be ATATCG.
Deletion mutations occur when one or more base pairs are omitted from a DNA sequence. For example, if a section of DNA is ATTCG, the mutated strand could be ATCG.
Mutations can happen for several reasons.
This page contains nearly everything that you need if you missed class.