Squamous carcinoma of the lung

Observe the slide showing squamous carcinoma of the lung

copyright Michael Bonert 

Draw this slide in colour, state your magnification  and label the nuclei.  Answer these questions:

1.  How do you know where the DNA is located in this image?

2.  What are some of the causes of lung cancer?

3.   How can lung cancer be prevented?

4.  What are some treatments? 

DNA replication lesson

 

April 10, 11 A review of mitosis and meiosis.

 Although you studied mitosis and meiosis last year, 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


Assignment 7
CREATIVELY answer the following questions on your own paper and photograph this and send it in through teams. Answer in full sentences and draw your answers.  

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?

16.  The word chromosome is very tricky it's true definition is:

1 chromosome = 2 identical sister chromatids joined together in a centromere,
What is the other definition and why can it be a very tricky word?

17.  Write the steps of meiosis and mitosis side by side.   (this is at the end of the video)

You can also take a look at this resource.  It is meiosis and mitosis from a college level text book.  This is extended reading for those who are interested in going through biology.  I think many of you can actually handle this level.


Cartoon /20
20 - This stands out in its effort and creativity
18-19. This is done in ink and colour and includes all the details above and the details are all correct.  This is excellent

15-17. This is very good work with effort and correct details.  Some details are not there but most are there and there is excellent quality of drawing and presentation.

10-14. This is a very good start and your work shows creativity.  It is not in colour or ink and looks like a very nice draft

5-9.  This is incomplete but a decent start.


Powerpoint  with screen grabs from video or illustrations of your own
20. Your powerpoint truly stands out.  You show exceptional talent and you include all the details
19-19. Your powerpoint  shows talent in writing, with creative and memorable words.  You include all the details above 

15-17. This is very good work with effort and correct details.  Some details are not there but most are there and there is excellent quality of writing.

10-14. This is a very good start and your work shows creativity. like a very nice draft

5-9.  This is incomplete but a decent start.

April 12: Mitosis lab

 The mitosis slides are located in the second back room.  They can be a challenge to look at.  If they can be found then your teacher will assist you in observing these prepared slides .  

Draw mitosis under high power in the light  microscope in 3 pictures. Label the stages of mitosis

Edmund Beecher Wilson - Figure 2 of: Wilson, Edmund B. (1900) The cell in Development and Inheritance (2^nd ed.)

steps of cell cycle:  you should write a table showing the steps as well as the
FORM OF DNA
role of other organelles

1.  INTERPHASE -
a.  cell is undergoing growth.  After a period of growth, it prepares to divide
b.  cell replicates its DNA.  Nuclear membrane is still intact
2. PROPHASE
Nuclear membrane disappears and the chromosomes are visible
3.  METAPHASE
chromosomes line up in the middle and Centrioles send out the spindle fibres to attach to the centromere
4.  ANAPHASE
centromeres get ripped apart and thus the chromosomes get ripped apart into separate chromatids
5.  TELOPHASE
nuclear membrane reforms around the chromatids
6.  CYTOKINESIS
chromatin is in the nucleus now.

Tuesday, April 2 : Worksheet: There are 4 ways to increase the rate of reaction

 Read the following notes. Ways to increase rate of reaction

Assignment : Do the study questions, put your name on it and hand it in when done    Answer key is here.  or here  Your teacher will make a list of who finished this assignment. 

Wednesday , Thursday April 3, 4 Lesson: Introduction to DNA

 Watch my videos on DNA, review the concepts in the slides below  and use class time to complete the assignments which are due on Friday.  

Here is another video from youtube which explains these concepts in more detail.





Assignment - 15 points

SUMMARIZE THE MAIN POINTS OF DNA NOTES 10 points

A. Summarize the main points of the DNA notes AND the DNA slide show in a Cartoon Format and make a clear photo of this cartoon.  upload your assignment in Microsoft Teams.   Include the details about Watson and Crick and Franklin.

EVALUATION rubric
10 points:  You included all the main points in a colourful, creative format which is written in ink and coloured.  You used humour and creativity and your assignment stands out for showing an understanding of the key points

8-9 :  you include all the main points and you show excellence and creativity. your assignment is in colour and inked

5-7 :  you include most of the main points and your assignment is handed in. It is a good start and  You needed more time to finish this.

2-4:  you handed something in that was not quite complete, although it is a pretty good start

You may do Assignment 3 Aas a poem that rhymes if you don't want to draw.

3B.  take a picture of  your drawing of this worksheet filled out: You may redraw it or edit it in Paint.
5 points

If there is time on Friday, do the Clover lab

 We know that plants are important to the ecosystem because they photosynthesize. Did you know that some plants are legumes and these are special because they have ROOT NODULES which are nitrogen fixers.  These root nodules are little rooms where Rhizobium bacteria convert nitrogen gas into ammonium and then Nitrobacter bacterium in the soil  converts ammonium into nitrates. Plants can absorb nitrates to make plant protein.  When those plants are eaten by animals, then animals use the nitrogen to make animal protein.  You can say that all the protein on your body (muscles, enzymes, hair, fingernail etc) was built from nitrogen which was fixed by Rhizobium at some point in time.  

ASSIGNMENT:  10 points

Only certain plants contain these root nodules...amongst them are  bean plants and clover plants.   Look at the morphology of clover plants below.  Look on our school grounds  and find AS MANY DIFFERENT GENETIC VARIETIES as you can.  Upload your clover pic  on a word doc or ppt and hand in as an assignment. 

This picture is from research done by Tashiro et al on the genetics of clover plants.  https://www.researchgate.net/publication/250119450_Leaf_Trait_Coloration_in_White_Clover_and_Molecular_Mapping_of_the_Red_Midrib_and_Leaflet_Number_Traits

CREATE A CHART SHOWING

1. Your pictures of the clovers or clover patch

2.  The numbers of EACH TYPE of clover 

3.   Why is it important to keep a species inventory of plants such as clover in an ecosystem?