Happy Wednesday!Bellwork: Write the entire question below

and your entire answer.Which of the following codons would result in a silent mutation of the codon “CAC”?A) CAAB) CAUC) ACA

Turn in BOTH Transcription/Translation

Worksheets from yesterday!!!

Today’s Standard: describe the roles of DNA, RNA, and environmental factors in cell differentiation (B.5C)

Essential Question: What is cell differentiation and why is it significant?

Define the following words:

• Differentiation: The steps taken to make something different

• Stem: _________________________________

• Cell: ___________________________________

Define the following words:

• Differentiation: The steps taken to make something different

• Stem: The root, origin, or start of something

• Cell: ___________________________________

Define the following words:

• Differentiation: The steps taken to make something different

• Stem: The root, origin, or start of something

• Cell: The smallest unit of life; prokaryotic or eukaryotic

Essential Question for Video 1: What are stem cells?

• While you watch the following clip, write down 3 important facts that may help you answer this question

What are stem cells?

Questions for clip 11. What are stem cells?2. Stem cells are ____________.

(undifferentiated/differentiated)3. Patients with leukemia have a type of

_______ (cancer/viral infection) and doctors can use stem cells to help the body produce more red blood cells.

4. What are pluripotent stem cells?

Essential Question for Video 2: How do stem cells work?

• While you watch the following clip, write down 3 important facts that may help you answer this question

How do stem cells work?

Questions for clip 21. How do stem cells work?2. A stem cell has the potential to become

_______________.3. ___________ signals cause stem cells to express

certain genes and ___________ to become certain types of cells like skin, muscle, or bone.

4. Describe the stem cell heart experiment.

Essential Question for Video 3: How are stem cells useful in medicine?

• While you watch the following clip, write down 3 important facts that may help you answer this question

A stem cell story

Questions for clip 31. Life begins with ______ cell and ________ to

produce the billions of cells that make up the body.

2. What are some places in the body that use stem cells to replace worn out tissue?

3. How are stem cells useful in medicine?4. Explain the controversy about using embryonic

stem cells.

Essential Question for Video 4: How can stem cells be used to make a human heart?

• While you watch the following clip, write down 3 important facts that may help you answer this question

The heart makers

Questions for clip 41. How can stem cells be used to make a human

heart?