Worksheet 17 - Phases of Mitosis PDF

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Phases of Mitosis...

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Worksheet 17 Phases of Mitosis Learning Objectives. This activity will help you:     

order the events of mitosis model and describe the distinct phases of mitosis describe the cellular components involved in mitosis model and explain the changes that occur to the cell in each phase differentiate between mitosis (nuclear division) and cytokinesis (cellular division)

Evaluation. The worksheet will be graded as: Needs improvement Responses are missing or mostly incorrect.

0-5 points

Fair All responses are present, but many are incorrect. Drawings instead of models can earn a max of 7/10 if everything else is perfect. 6-7 points

Good Exceptional Responses are mostly Responses are 100% correct but superficial. accurate, thorough, Submission of photos. and creative.

8-9 points

10 points

Instructions. Complete the prompts below. When you’re finished, upload your assignment into Blackboard as a .docx or .pdf (no .pages because I can’t view those). Drawings can be done instead of models but can only earn a max of 7/10 if everything else is perfect. Drawings can be done in many different ways. Pasted images taken from online will not be accepted. Part 1. Describe a cellular context Later in this worksheet, you will describe and model mitosis. But first, pick one organism (other than the example) and cell type to model. Be sure to use this specific organism’s cell type in your model later on in this worksheet. Be creative! An example is provided, but do not use humans for your answers. Table 1. Questions a. What Domain does your organism belong to? b. What Kingdom does your organism belong to? c. What is the scientific name of your organism? Be sure to use italics for the name.

Your answers

Example

Eukaryote

Eukarya

Animalia

Animalia

Panthera tigris

Homo sapiens

WS-Mitosis, BIOS 208, Dr. Bergan-Roller, Spring 2021 Online

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d. What is the common name of Animal human your organism? e. Choose a specific cell type Myocyte hepatocyte within your organism. f. How many chromatids* do the 78 46 somatic cells of this organism have during the G1 phase of its cell cycle? g. How many chromatids* do the 78-156 46-92 somatic cells of this organism have during the S phase of its cell cycle? h. How many chromatids* do the 156 92 somatic cells of this organism have during the G2 phase of its cell cycle? i. Describe where you found this Chromosomes (article) | Khan Textbook, 11 th information (e.g., textbook pg Academy Edition, pg 30; or paste the URL you found 235-236 it on) * A note about chromatids- the DNA content of a cell always contains the same number of chromosomes; however, the DNA content is doubled after the S phase. This doubling of DNA is captured with the number of chromatids. The human example is: 46 chromatids (46 chromosomes) before S phase (DNA replication) to 92 chromatids (still 46 chromosomes) at the end of the S phase. Part 2. Model Mitosis 1. Describe how your models (in Table 2) will represent the different cellular structures involved in mitosis in Table 1.

Table 1. Structures Cell membrane Nuclear envelope Centrosomes Centrioles Sister chromatids “Daughter” chromosomes Centromere Kinetochore Mitotic spindle Aster Kinetochore microtubules Nonkinetochore microtubules

Describe how its represented in your models below in Table 2. (example: a shoestring) Plate Pack of batteries Pack of pens Scissors Combs Flamingo toys Lip gloss tube Stool with combs on it Valentine’s heart Water bottle Hair tie

2. In Table 2 below: WS-Mitosis, BIOS 208, Dr. Bergan-Roller, Spring 2021 Online

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a. list the phases of mitosis in chronological order in the left-hand column. I’ve included “G2 of Interphase (just before mitosis)” for you- keep it there. b. Describe each phase in Table 2 in your own words. Be sure to describe the state and/or activities of the structures listed in Table 1, when appropriate. c. Create models depicting each phase in Table 2 with items you have around your house. d. Here is an example of an exceptional mitosis stop motion video: https://www.youtube.com/watch?v=0DAu46jC8xQ

WS-Mitosis, BIOS 208, Dr. Bergan-Roller, Spring 2021 Online

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Table 2. Phase G2 of Interphase (just before mitosis)

Description -

Interphase

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Prophase

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Mitosis

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Model (photo)

Nuclear envelop e encloses nucleus. 2 centroso mes have formed. Duplicat ed chromos omes

Mitotic spindles forms Centroso mes migrate away from each other. Chromos omes condens e.

WS-Mitosis, BIOS 208, Dr. Bergan-Roller, Spring 2021 Online

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Prometap hase -

Nuclear envelop e breaks up. Kinetoch ore attaches to centrom ere of each chromati d.

WS-Mitosis, BIOS 208, Dr. Bergan-Roller, Spring 2021 Online

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Metaphas e

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Anaphase

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Centroso mes moved to opposite poles of the cell. Chromos omes moved to the middle.

Sister chromati ds are pulled apart. Microtu bules shorten and pull daughte r chromos omes toward the poles.

WS-Mitosis, BIOS 208, Dr. Bergan-Roller, Spring 2021 Online

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Telophase

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Nuclear envelop es forms Loosenin g of the chromos ome structur e Microtu bules break apart.

WS-Mitosis, BIOS 208, Dr. Bergan-Roller, Spring 2021 Online

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Cytokinesi s

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Cytokinesis

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Cytoplas m division In animal cells, cleave furrow forms. In plant cells, a cell plate forms

Academic Integrity Statement I have completed this assignment with academic integrity, as defined in the syllabus and according to NIU policy (https://www.niu.edu/academic-integrity/index.shtml), including creating my own novel work and not sharing my work with others to reuse in the future. All participation in scholarly discussions and brainstorming of ideas with peers were done in an ethical manner, enabling creative thought without jeopardizing academic integrity. A missing signature will result in a score of 0.

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WS-Mitosis, BIOS 208, Dr. Bergan-Roller, Spring 2021 Online

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