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🧬🩸 Sickle Cell and the Central Dogma Intro

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Last updated 5 months ago
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Hyɛ no nsow a efi ɔkyerɛwfo no hɔ:

meant to accompany HHMI resources and cards. Not finalized; extensive WIP.

Whole Class-Intro with Video
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B.C.2E
B.C.3B
Independent/Partner Investigation
2.5
Creating a Sequence for the Central Dogma
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Wayground, Whole-Class
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Independent Stage Summaries of Transcription vs Translation

If you were present and deeply engaged in the Pear Practice during class, these should be fairly accessible. If these are tough or you think you couldn't do them without the provided word bank and hints, you have the option of going to the Lecture (last section), watching the video, and then returning here.

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1.6
B.C.6A
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B.C.6A
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1.6
B.C.6A
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6.1b
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B.C.6A
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B.C.6A
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Untitled Section 14
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Central Dogma Explainer
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BioManBio Game

Click here: https://biomanbio.com/membersite/Gamepages/LifeChemGames/protsynthracehtml5page.html

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Feedback
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Video Lecture

This video lecture is meant to be done AFTER the assignment, to make sure you understood everything and to give you animated visuals for the whole concept. If you are here as support, please check with me before beginning it.

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1.

Write QUESTIONS about this video. You may also write CONNECTIONS you have to this concept in life or media.

The video mentions that Ceniya had a blood test right after she was born. Babies in the United States usually have blood tests and other exams to check for health issues.

One type of blood test is a blood smear, which shows a person’s blood cells. Figure 1 shows blood smear results from individuals like Ceniya and Ingrid.

Figure 1. Illustrations of blood smears from individuals like (left) Ceniya and (right) Ingrid.

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2.

DESCRIBE Figure 1, in detail.

B.C.2G
B.C.3E
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3.

Propose RESEARCH QUESTIONS about Figure 1.

(If you cannot come up with a research question; something that could be investigated scientifically and not just with Google, propose any questions you have about the images.

B.C.2E
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4.

Suggest INFORMATION that you think you need to start investigating these questions.

B.C.2E
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5.

Do the cells in figure 1 (Ceniya vs Ingrid) all function the same way? Why or why not?

Figure 2 shows typical and sickled red blood cells, as well as the hemoglobin molecules found in each cell type.

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6.

This question does not have partial credit, because all answers are from clear context or previous knowledge. Give a best effort then ask for support, rather than iterating through each dropdown until the credit changes.

The Role of the Red Blood Cell as Part of the Cardiovascular System

One type of blood cell, the called hemoglobin, which it uses to carry system), providing resources and disposing of wastes.

Use the image at left to support these answers.

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7.

Quick Review:

While this is not the main subject of this study, this is a relevant concept from the first six weeks.

The width of a tube varies depending on its proximity to the heart; close to the heart, the tubes are wide arteries. At the extremities like the fingertips, the tubes are narrow capillaries.

These narrow capillaries have an increased ratio compared to the arteries. This means that while blood doesn't flow quickly 'along' the hose, it is very easy for it to out to oxygenate the cells.

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8.

COMPARE and CONTRAST the typical and sickled red blood cells and their associated hemoglobin molecules.

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9.

Using information from the above questions and introduction video, summarize what you understand so far.

25 words is not enough, 50 words is probably there, 75 words is almost certainly there, 200 words is too many.

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10.

The purpose of the blood cell (RBC) is to transport gaseous from the lungs to all other organs and tissues in the body.

A typical erythrocyte (RBC) is -shaped, and flexible.

A disorder called sickle-cell anemia leads to RBCs that stack up and vessels.

This prevents effective transfer to the body.

This is a discovery-based activity. The exact answers are important, but I have other ways for you to get to the exact answers by the end. For now, trust in the process and use the sequencing and active attention to lay a strong foundation for your later understanding of how genes influence our phenotypes.

If working whole class, at start of class each partner-pair has a stack of cards; one set is labeled 'typical cell' and the other is labeled 'sickle cell'. Investigate these cards; you may sort and compare and contrast them (eventually, return them to the typical and sickle cell piles for specific sequencing), discuss the vocabulary and what you think you recognize or wonder, etc.

You are highly encouraged to use the physical cards first and then the digital sort so that you have color images and a reference to write from.

Collect your physical cards and make sure you have A-H of a red stack (typical cell) and a yellow stack (sickle cell). A-H are a way to tell you have all the cards; they are not the correct sequence.

To sequence, you need to think about what makes sense in a timeline. Once you start sequencing, you should close your laptop and focus your discussion, then call your teacher over for a check when you are done.

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11.

Sequence the typical cell cards, discussing with a partner why you have placed them where you have. This is intended to be draft, so do not worry about getting this question to turn green! Partial credit is not on and it's set to 0 points; it is fine for this question to remain red.

As you work through this part of the activity, keep this driving question in mind:

Where is the origin of the change that results in clumped hemoglobin molecules and sickled red blood cells?

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12.

Provide reasoning for this specific sequence of cards. Your reasoning should not be 'I know the steps of the central dogma'; it should be derived from the card sort, including vocabulary and hints of sequence from the image layouts. You should incorporate as much knowledge from the Wayground as you can, including additional details. (Don't side-by-side write while looking at the report; do from recall, then ask me for feedback).

See the hint for alternate phrasing for how to write this answer.

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13.

Sequence the sickle cell cards, discussing with a partner why you have placed them where you have. This is intended to be draft, so do not worry about getting this question to turn green! Partial credit is not on and it's set to 0 points; it is fine for this question to remain red.

As you work through this part of the activity, keep this driving question in mind:

Where is the origin of the change that results in clumped hemoglobin molecules and sickled red blood cells?

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14.

Compare and contrast; what changed during sickle cell anemia?

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15.

Protein Synthesis whole-class Wayground Recap

Write, type, or draw (by hand, preferably, not the digital version here), concepts you recall from the Pear Practice. You may list vocabulary, single phrases, or work in more complete sentences; your call!

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16.

Using terms from the diagram and your background understanding but not Google, COMPARE and CONTRAST the structure of DNA and RNA.

When you have completed your response, check the rubric and decide if you have earned the points; adjust your answer to try to meet missing points on rubric, then click the message button and let me know you are ready for grading.

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17.

While RNA is jealous of DNA because DNA is double-stranded, DNA could be jealous that RNA has and DNA doesn't.

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18.

Match the concepts to help you compare DNA to RNA.

Draggable itemarrow_right_altCorresponding Item

base unique to RNA

arrow_right_alt

structure of RNA

arrow_right_alt

structure of DNA

arrow_right_alt

sugar in RNA

arrow_right_alt

base unique to DNA

arrow_right_alt

sugar in DNA

arrow_right_alt

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19.

From recall and your writing first, categorize DNA vs RNA. You can scroll up and look at the image if you get stuck.

  • adenine

  • single helix

  • deoxyribose sugar

  • double helix

  • uracil

  • guanine

  • ribose sugar

  • cytosine

  • thymine

  • covalent bonds

  • hydrogen bonds

  • paired bases

  • DNA

  • RNA

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20.

Match the characters in the comic to their context.

Draggable itemarrow_right_altCorresponding Item

this suffix means that this molecule is probably an enzyme or other protein

arrow_right_alt

this contains guanine, cytosine, thymine, and adenine

arrow_right_alt

these are generally proteins, which means they are built from AMINO acids

arrow_right_alt

these sad jealous molecules are RNA, riboNUCLEIC acid, messengers; we'll learn more about them later, but not today!

arrow_right_alt

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21.

IDENTIFY the structures of heredity.

If you are very stuck, you can review the previous question's hints, but you should be able to do this WITHOUT the provided word-bank or any hints. If you cannot, make a note to study.

Mmuae Afoforo a Wobɛpaw:

phosphate-sugar backbone

nitrogenous bases

nucleus

DNA

gene

eukaryote

karyotype

chromosome

prokaryote

RNA

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22.

Try doing this from recall, then reviewing the previous questions in this section for help.

The monomer of a nucleic is a nucleotide; both RNA and DNA are made of nucleotides.

DNA has # strands, twisted into a ladder. We call this the double helix, and its presence was discovered by Rosalind Franklin.

In RNA, there is only # strand to make up the backbone, and because the backbone is twisted like a spiral staircase, but is not doubled, we call it a single . Since there's only the one strand, there are no base pairs, but there are still nitrogenous bases. The bases in RNA are a little different; where DNA would have a , RNA has a instead.

In both DNA and RNA, the backbone of the helix is made out of the and the sugar. In DNA, the sugar is called , giving DNA its long name of deoxyribonucleic acid. In RNA, the sugar is called , giving RNA its long name of ribonucleic acid.

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23.

The sequence on the right tells a DNA fairy tale. Match the pictures to the descriptions, and then read the hint for information about the (1) (2) (3) footnotes.

Draggable itemarrow_right_altCorresponding Item

arrow_right_alt

Once upon a time, in a eukaryotic cell far away,

arrow_right_alt

lived a lovely DNA molecule with nucleotides of gold(1),

arrow_right_alt

a DNA molecule with two antiparallel strands longer(2) than longcat:

arrow_right_alt

trapped(3) in a nucleus, its days were quiet,

arrow_right_alt

and the DNA spent those days replicating its nucleotides(4) with the help of its enzyme friends.

arrow_right_alt

mRNA(5) was its one-and-only link to the outside.

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24.

Model 1: Static display of the important molecules involved in transcription.

IDENTIFY the key molecules in the process of transcription.

Each of these vocabulary words, their general structure, and function, is required knowledge for the test. Pay attention to where the 'dot' sits for these labels.

The next few questions will expand on this model.

Mmuae Afoforo a Wobɛpaw:

RNA

RNA polymerase

DNA polymerase

DNA

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25.

Model 2: An animated, close-up view of transcription.

Label the process of transcription.

Each of these vocabulary words, their general structure, and function, is required knowledge for the test. Pay attention to where the 'dot' sits for these labels.

The next few questions will expand on this model.

Mmuae Afoforo a Wobɛpaw:

DNA

active site

RNA

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26.

Model 2: An animated, close-up view of transcription.

Label the process of transcription.

Each of these vocabulary words, their general structure, and function, is required knowledge for the test. Pay attention to where the 'dot' sits for these labels.

The next few questions will expand on this model.

Mmuae Afoforo a Wobɛpaw:

new RNA nucleotide added

RNA

new DNA nucleotide added

DNA

DNA polymerase

exposed DNA base

RNA polymerase

active site

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27.

Model 3: An animated, big-picture view of transcription

According to models 1-3 above, during the process of , the double-stranded (model 3 black) is unzipped, exposing the nitrogenous of each (monomer).

polymerase (in grey, models 1-3), is a special type of protein with an active site, called an . This polymerase, like all other proteins, is made of acids.

The polymerase constructs a new single-stranded , represented in red (models 1-3).

This newly produced molecule will be the messenger which will be used in the process of translation.

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28.

Model 4: The molecules involved in translation.

Label the process of translation.

Each of these vocabulary words, their general structure, and function, is required knowledge for the test.

The next few questions will expand on this model.

Mmuae Afoforo a Wobɛpaw:

ribosome

mRNA

polypeptide

tRNA

ribose

amino acid

DNA

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29.

Model 5: Animated view of translation

Draggable itemarrow_right_altCorresponding Item

arrow_right_alt

mRNA can be identified by both its single-stranded nature and because it contains uracil

arrow_right_alt

the ribosome facilitates binding of tRNA to mRNA

arrow_right_alt

chargaff's rule determines which tRNA binds where; hydrogen bonds are temporary and easily broken

arrow_right_alt

each amino acid in the growing polypeptide chain is covalently bonded to the next in primary structure

arrow_right_alt

eventually, a stop codon signals termination of the translation process, the polypeptide chain is detached, and the ribosome dissociates

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30.

According to models 4 and 5 above, the is the site of translation. At this subcellular component (made of protein and ribosomal RNA), the different 'machinery' of protein synthesis come together.

The , a single-stranded molecule formed from ribonucleotides, is passed through the ribosome. Nucleotides are matched, and , a single-stranded molecule also formed from ribonucleotides but 'bent' into a unique shape, brings specific acids to the ribosome.

The message carried in mRNA is thus into a sequence of amino acids called a , which will become the protein.

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31.

Match to review bond types.

Draggable itemarrow_right_altCorresponding Item

process and type of bonds produced between mRNA and tRNA

arrow_right_alt

transcription; hydrogen

process and type of bonds produced between adjacent amino acids at the ribosome

arrow_right_alt

transcription; covalent

process and type of bonds produced between mRNA and subsequent mRNA nucleotides on the same strand

arrow_right_alt

translation; hydrogen

process and type of bonds produced between DNA and mRNA nucleotides

arrow_right_alt

translation; covalent

Go here, and choose "Central Dogma" section at the top.

https://media.hhmi.org/biointeractive/click/genetic-medicine-interactive/

Work through the tabs under the section. This is your chance to get the order of cards correct; you should return to questions 11 and 13 and edit them, paying attention to what you got wrong the first time. Then, you can add information to question 12- you should show that it is added from the explainer, either by bolding or changing the color or writing in all CAPS.

https://learn.genetics.utah.edu/content/basics/transcribe/ will also help; the visual models aren't as directly aligned, but if you pay attention to what is happening in the pictures you will see the similarities.

Now, you can ask to have your sequences checked visually, or you can do so here by typing the sequence of letters for the cards in the question below and calling it out to me that you're ready for a check.

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32.

The correct card sequence is: (enter letters only, no spaces, commas).

Remember: Use the interactive to help you adjust this and check your work. You are welcome to ask me for feedback; if I see a minor error I'll certainly correct it for you, but if it's all out of order I'll ask you to reference your two activities again.

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33.

Record what you have learned from the game that YOU DID NOT already PROCESS from this Formative. Best suggestion: Keep a running list of terms or brief doodles, then at the END, without directly copying, write what you recall those things mean. You could even copy-paste your sequence writing from 12 to help here.

If you struggle to write, play it again. The point is to KNOW the material, not just be able to copy down the answers from the source.

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34.

Watch this short:

https://www.youtube.com/shorts/mSMjwxNK2EU?feature=share

Rate your understanding of this information

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35.

Anything you learned from the short that you need to record here?

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36.

I am feeling

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37.

I felt respected during this class by my peers

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38.

Share about your experience and comfort in today's class (optional)

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39.

Tell me about your experience with Formative.

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40.

My struggle during today's class was

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41.

My support from teacher today was

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42.

Process your learning: Write and/or draw and upload or draw on here what you have learned so far.

This can be a catch-all place for notes or screenshots.

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43.

Optional: Notes Space