This is a Clilstore unit. You can link all words to dictionaries.

A Cell Division

Introduction

Cell division is the process by which a parent cell divides into two daugter cells. Cell division usually occurs as part of a larger cell cycle in which the cell grows and replicatesits chromosomes before dividing. We will talk about a vegetativ division - mitosis, producing daugter cells genetically identical to the parent cell.

Process and Resources

Task 1

Cell division gives rise to genetically identical cells in which the total number of chromosomes is maintained.

Think about:

what is the main structure for the division
parts of the cell division
comparing karyokinesis and cytokinesis
comparing the division of plant and animal cell

Task 2

In general, mitosis (division of the nucleus) is preceded by the S stagr of interphase and is followed by telophase and cytokinesis, which divides the cytoplasm, organelles and cell membrane of one cell into two new cells containing roughly equal shares of these cellular components. Make Activity using the green buton "Cell Division" below. For help you can use green buton "Pictures".

Task 3

Speaking about defects that occur during DNA replication or chromosome segregation, and inducing a cell cycle arrest in response until the defects are repaired, we use a special term solve the double puzzle - green button below.

To ensure proper progression through the cell cycle, DNA damage is detected and repaired at various checkpoints throughout the cycle. Read more about it using green buton "Text" below.

Check your understanding:

1. Which parts of cell cycle are the cell cycle checkpoints in?

2. Do the checkpoins exist in all types of cells - prokaryotic and eukaryotic cells too?

3. What type of cancer can by caused by mulfunctioning of cell cycle checkpoints?

4. Which checkpoint is the most important and why?

Conclusion

Choose one of the following tasks:

Presentation about the conection of the cell cycle check points and formation of cancer in electronic or written form.
Presentation about posible types of regulation of the cell cycle in elektronic or written form.

Evaluation

CATEGORY	4	3	2	1
Graphics -Clarity	Graphics are all in focus and the content easily viewed and identified from 6 ft. away.	Most graphics are in focus and the content easily viewed and identified from 6 ft. away.	Most graphics are in focus and the content is easily viewed and identified from 4 ft. away.	Many graphics are not clear or are too small.
Graphics - Relevance	All graphics are related to the topic and make it easier to understand. All borrowed graphics have a source citation.	All graphics are related to the topic and most make it easier to understand. All borrowed graphics have a source citation.	All graphics relate to the topic. Most borrowed graphics have a source citation.	Graphics do not relate to the topic OR several borrowed graphics do not have a source citation.
Knowledge Gained	Student can accurately answer all questions related to facts in the poster and processes used to create the poster.	Student can accurately answer most questions related to facts in the poster and processes used to create the poster.	Student can accurately answer about 75% of questions related to facts in the poster and processes used to create the poster.	Student appears to have insufficient knowledge about the facts or processes used in the poster.
Content - Accuracy	At least 7 accurate facts are displayed on the poster.	5-6 accurate facts are displayed on the poster.	3-4 accurate facts are displayed on the poster.	Less than 3 accurate facts are displayed on the poster.