Mitosis and meiosis lesson notes and questions

 Although you studied mitosis and meiosis in the past, it is worth a look again to make sure you have all the steps down correctly.  It will help you to understand our next unit which is Genetics.  This video explains how alleles are connected to the steps of mitosis and meiosis.  I also assume this is familiar from last year.

Your teacher will review these steps, explaining some of the complex parts and  give you time to answer the questions.  Next, your teacher will review the answers to the questions.  After this you will do a creative assignment to demonstrate that you understand this material.  

Please watch this video


Answer the following questions on your own paper and hand this in. 

 Answer in full sentences and draw your answers.  Draw in ink or photograph a model using lego, string or other material

1.  What is Chromatin?  How many strands are there in a human?
2.  How many chromatids are there in a human?
3.  What is the 2n  or diploid number?
4.  What is mitosis used for?
5.  What is meiosis used for?
6.  Define "Gamete"
7.  What is the Haploid number?
8.  What organ makes sperm, what makes egg?
9.  How many chromatids are in a sperm or egg?
10 Draw a fertilization
11.  Draw how sperm cells are made using the number 46 to represent the chromatid number.
12.  Draw and label Chromatin, Chromatid, Sister chromatids, Chromosome.  And show me a homologous chromosome
13.    Draw a mitosis with 2n= 6.  Label the stages in detail. Remember to draw Interphase and show chromatins.
14.  Draw a meiois with 2n=6.   Label the stages.
Again, draw interphase and show the chromatin.
15a. Why does crossing over happen during prophase I?
15b.  What is primary nondisjunction.  What can happen to the chromatid number?

immune system topics for quick poster presentation

 1. Alaskan Serum relay of 1925, the story of Togo and Balto

2.  Influenza: H3N2 subclade K flu, Avian Flu H5N1 

3. TB

4. Measles

5. Meat allergy alpha gal case 

6.  HPV and cervical cancer 

7. Mpox clade 1 &2

8. Tetanus ER protocols and the story of the boy in 2017 in Oregon who was not immunized against Tetanus

9. Meningitis B in Nova Scotia:  The story of Kai 

The Immune System Study Questions

 We reviewed the immune system in class.  

1.  The immune system can be divided into SPECIFIC  responses and NONSPECIFIC responses.  

a.  What are the two kinds of specific responses and what cells are involved?

b.  What are the two kinds of nonspecific responses? 

2.  For barriers, describe the kinds of barriers that are in the 

a. respiratory system

b. digestive system 

c.  reproductive system

d.  skin 

3.  The inflammatory response happens when there is a break in the barrier.  List all the steps of the inflammation response, including all the cells that are involved and the cell communication that takes place.  

4.  Is inflammation LOCAL , happening in a specific place, or is it SYSTEMIC, happening all over the body?  

5.  Describe the following cases where the inflammatory response is not working properly. What is the cause, the symptoms and the treatment?

a.  allergy to a  food item

b.  sepsis

6.  What are the two kinds of SPECIFIC IMMUNITY and what cells are involved ?

7.  What is a major histocompatibility complex and how does it help protect the body?

8.  Describe the steps of the humeral response.

9. describe the steps of the cell mediated response.

10 How does a T-cell get trained to do its job properly and to not attack the body?  

11.  Give some examples of "autoimmune" diseases. 

Fetal circulation

 

 Click on the picture below to play the video 
 
 

Today we explored fetal circulation.  First we drew our conception of how fetal circulation might occur. Next we compared fetal and baby circulation in depth in the table below.  Finally we drew a schematic diagram to compare the two and listened to a baby cry because the newborn's first breath is when the ductus arterioles and the foramen ovale closes successfully

   

BLOOD PRESSURE

  The Major Blood Vessels. DIAGRAM

OK so, during class,  we'll play doctor and find blood pressure.  Have  a look at this tutorial before you test this on each other...

Heart Dissection

 Have a look at the gross anatomy of the mammalian heart 

You will receive your heart and orient it with the ventral face up and dorsal face down.   Review the 

 the major vessels that come out of the AORTIC ARCH 

PATH OF BLOOD

 Today we will introduce you to the Circulation System.

This is the slideshow

You will receive a gigantic DIAGRAM on circulation

and we will explore the  path of blood . In particular, we will replicate William Harvey's experiment demonstrating that veins move only in one direction.  

also this is the major vessels that come out of the AORTIC ARCH 

Read the Summary notes on circulation:
Circulation System. 
  Major Blood Vessels
  Lymphatic System link here 

Extra resources here

Do the review on blood vessels.  Review on blood vessels