Loading...

Messages

Proposals

Stuck in your homework and missing deadline? Get urgent help in $10/Page with 24 hours deadline

Get Urgent Writing Help In Your Essays, Assignments, Homeworks, Dissertation, Thesis Or Coursework & Achieve A+ Grades.

Privacy Guaranteed - 100% Plagiarism Free Writing - Free Turnitin Report - Professional And Experienced Writers - 24/7 Online Support

Experiment 1 observation of mitosis in a plant cell

11/10/2021 Client: muhammad11 Deadline: 2 Day

Lab 3

Lab 3 Mitosis and Meiosis BIO201L

Student Name:

Access Code (located on the lid of your lab kit):

Pre-Lab Questions

”1. What are chromosomes made of?”

”2. Compare and contrast mitosis and meiosis. ”

”3. Cancer is a disease related to uncontrolled cell division. Investigate two known causes for these rapidly dividing cells and use this knowledge to invent a drug that would inhibit the growth of cancer cells. ”

Experiment 1: Observation of Mitosis in a Plant Cell

Table 1: Mitosis Predictions

Predictions

Duplication of original cell and its contents

Supporting Evidence

A single cell undergoes division to form two cells each with its own cell contents

Table 2: Mitosis Data

Chosen Image

Observation

Stage

Number of Cells in Stage

Total Number of Cells

Calculated % of Time Spent in Stage

Interphase

5

13

2

Prophase

2

10

3

Metaphase

3

9

1

Anaphase

7

12

4

Telophase

2

17

2

Cytokinesis

1

6

5

Table 3: Stage Drawings

Cell Stage

Drawing REMEMBER: Your drawings should have your name and access code handwritten in the background.

Interphase

Prophase

Metaphase

Anaphase

Telophase

Cytokinesis

Post-Lab Questions

”1. Label the arrows in the slide image below with the appropriate stage of the cell cycle. ”

A- prophase

B- anaphase

C- metaphase

D- interphase

E- telophase

F- anaphase

”2. What stage were most of the onion root tip cells in? Why does this make sense? ”

Telophase. Most onion cells are rapidly dividing

”3. As a cell grows, what happens to its surface area : volume ratio? (Think of a balloon being blown up). How is this changing ratio related to cell division? ”

The surface area to volume ration decreases as cell division increases the size of the cell

”4. What is the function of mitosis in a cell that is about to divide? ”

To enable the chromosomal contents divide

”5. What would happen if mitosis were uncontrolled? ”

It would lead to uncontrolled growth

”6. How accurate were your time predictions for each stage of the cell cycle? ”

Very accurate

”7. Discuss one observation that you found interesting while looking at the onion root tip cells.”

The onion cells take considerably shorter time to undergo mitosis

Experiment 2: Tracking Chromosomes Through Mitosis

Once you have completed the digital exercise, select the “Results Table” button at the bottom right-hand corner of the screen and select the “Generate PDF” button at the top of the following screen. Insert your download into this document by selecting the Insert > Object > Text from file. Resize if necessary.

Post-Lab Questions

1. How many chromosomes were present before mitosis?

2

1. How many chromosomes did each of the daughter cells contain after mitosis?

4

1. Cite an example of a type of cell that undergoes mitosis. Why is it important for each daughter cell to contain information identical to the parent cell?

Human stem cells. To preserve genetic composition

1. Human skin cells divide at a higher rate than neurons (nerve cells). Hypothesize why this may be.

Due to the presence of chromosomes

1. Hypothesize what would happen if the sister chromatids did not split equally during anaphase of mitosis.

It may lead to abnormally large cells

Experiment 3: Following Chromosomal DNA Movement through Meiosis

Part 1: Once you have completed the digital exercise, select the “Results Table” button at the bottom right-hand corner of the screen and select the “Generate PDF” button at the top of the following screen. Insert your download into this document by selecting the Insert > Object > Text from file. Resize if necessary.

Parts 2, 3, and 4: Once you have completed the digital exercise, select the “View Data Table” button at the bottom left-hand corner of the home screen. Review your table. If you would like to make any changes, select the “Return” button in the bottom right-hand corner. If you are satisfied with your answers, select the “Generate PDF” button at the top of the screen. Insert screenshots below. Resize if necessary:

Post-Lab Questions

How did crossing over affect the genetic content in the gametes? Use your results to support your answer.

Crossing over ensures that daughter cells have equal genetic make up

What is the ploidy of the daughter cells at the end of meiosis I? What about at the end of meiosis II?

Diploid. At the end of meiosis II the daughter cells become haploid

List two differences between meiosis I and meiosis II.

In meiosis I homologous chromosomes are separated while in meiosis II sister chromatids separate. Meiosis I produce 2 diploid daughter cells while meiosis II produce 4 haploid daughter cells.

Based on your observations in the digital exercise, what can you conclude about the severity of nondisjunction that occurs in meiosis I as opposed to meiosis II?

It can lead to chromosomal abnormality

Why is it necessary to reduce the number of chromosomes in gametes, but not in other cells?

Because of the fusion of gametes which will restore chromosomal number

Blue whales have 44 chromosomes in every cell. Determine how many chromosomes you would expect to find in the following: ”

”Sperm Cell: ” 22

”Egg Cell: ” 22

”Daughter Cell from Mitosis: ” 44

”Daughter Cell from Meiosis II: ” 22

Experiment 4: The Importance of Cell Cycle Control

Data:

1. avoid chromosomal disconnection 2. Ensure completion of DNA replication 3. Prevent damage to cell structures 4. To prevent uncontrolled growth 5. To prevent development of tumors

Post-Lab Questions

”1. Record your hypothesis from Step 1 in the Procedure section here. ”

The daugher cells will be haploid

”2. What do your results indicate about cell cycle control? ”

It is important to avoid cell defects

”3. Suppose a person developed a mutation in a somatic cell which diminishes the performance of the body’s natural cell cycle control proteins. This mutation resulted in cancer yet, but was effectively treated with a cocktail of cancer-fighting techniques. Is it possible for this person’s future children to inherit this cancer-causing mutation? Be specific when you explain why or why not. ”

No. The offspring will not inherit somatic cells

”4. Why do cells which lack cell cycle control exhibit karyotypes which look physically different than cells with normal cell cycle. ”

Due to chromosomal mutations

”5. What are HeLa cells? Why are HeLa cells appropriate for this experiment? ”

They are cervical cancer cells therefore appropriate because they are immortal

”6. Research the function of the protein called p53. What does this function do? Explain how it can affect cell cycle control. ”

This is a tumor suppressor protein involved in preventing the development of tumors

”7. What is the Philadelphia chromosome? How is this chromosome related to cancer? Identify how this chromosome appears physically different on a karyotype than it appears on a karyotype of normal chromosomes. ”

Philadelphia chromosome results from chromosomal translocation and results to the development of acute myeloid leukemia. It therefore appears different on a karyotype.

Homework is Completed By:

Writer Writer Name Amount Client Comments & Rating
Instant Homework Helper

ONLINE

Instant Homework Helper

$36

She helped me in last minute in a very reasonable price. She is a lifesaver, I got A+ grade in my homework, I will surely hire her again for my next assignments, Thumbs Up!

Order & Get This Solution Within 3 Hours in $25/Page

Custom Original Solution And Get A+ Grades

  • 100% Plagiarism Free
  • Proper APA/MLA/Harvard Referencing
  • Delivery in 3 Hours After Placing Order
  • Free Turnitin Report
  • Unlimited Revisions
  • Privacy Guaranteed

Order & Get This Solution Within 6 Hours in $20/Page

Custom Original Solution And Get A+ Grades

  • 100% Plagiarism Free
  • Proper APA/MLA/Harvard Referencing
  • Delivery in 6 Hours After Placing Order
  • Free Turnitin Report
  • Unlimited Revisions
  • Privacy Guaranteed

Order & Get This Solution Within 12 Hours in $15/Page

Custom Original Solution And Get A+ Grades

  • 100% Plagiarism Free
  • Proper APA/MLA/Harvard Referencing
  • Delivery in 12 Hours After Placing Order
  • Free Turnitin Report
  • Unlimited Revisions
  • Privacy Guaranteed

6 writers have sent their proposals to do this homework:

University Coursework Help
Write My Coursework
Assignment Hut
Maths Master
Finance Master
Coursework Assignment Help
Writer Writer Name Offer Chat
University Coursework Help

ONLINE

University Coursework Help

I have read your project details. I can do this within your deadline.

$34 Chat With Writer
Write My Coursework

ONLINE

Write My Coursework

I will cover all the points which you have mentioned in your project details.

$50 Chat With Writer
Assignment Hut

ONLINE

Assignment Hut

I have read your project details. I can do this within your deadline.

$48 Chat With Writer
Maths Master

ONLINE

Maths Master

I have read your project details. I can do this within your deadline.

$34 Chat With Writer
Finance Master

ONLINE

Finance Master

You can award me any time as I am ready to start your project curiously. Waiting for your positive response. Thank you!

$25 Chat With Writer
Coursework Assignment Help

ONLINE

Coursework Assignment Help

I have read and understood all your initial requirements, and I am very professional in this task.

$42 Chat With Writer

Let our expert academic writers to help you in achieving a+ grades in your homework, assignment, quiz or exam.

Similar Homework Questions

Research, identify, and briefly describe the evolution of information systems infrastructure. - Reaction between sodium oxalate and potassium permanganate - Advantages and disadvantages of computer forensics - Specify the Importance of Ethical Practices - In praise of the f word argumentative essay - Low voltage cables specifications - Catholic education commission netid - Hltwhs002 assessment answers - Big skinny case study - 50 ml volumetric pipette uncertainty - Potential energy 1 2kx 2 - Lower and upper fence formula - 2008 vcaa chemistry exam - Quality improvement theory in nursing - Elements of music answer key - Gsb pick your seat - Letter to unknown recipient - Stute logistics ag & co kg - Chinaware in food and beverage - 17 camels and 3 sons - Floating and sinking physics form 4 - Chapter 49 great expectations - One discussion and 2 replies - To determine if the type of agar affects bacterial growth - Size it up worksheet answers - Bvi cruising guide book - Purchase ledger control account - Business and law - The cover up method - Concur we encountered an error uploading your receipt unknown - Department of education regional directors - Harris todaro model graph - Global winds and jet streams worksheet - Workplace relations commission leaving cert business - Cushing ok wti spot price fob - Half bridge isolated dc dc converter - Fiedler's contingency leadership model assumes that - Romeo and juliet kissing scene in pool - Scylla and charybdis odyssey - Lección 4 estructura 4.2 autoevaluación verbos contar - Did ferdinand magellan accomplish his goal - Management information system facebook - Psychology in context kosslyn pdf - Case study - From critical thinking to argument a portable guide edition 5 - Basic laboratory techniques report sheet answers - Biology pcr late nite labs - Mysql & database - Artifacts from the realism era - How do i graph y 2x 2 - The scarlet letter chapter 3 study guide answers - Unit substitution fault finding - Examples of pathetic fallacy in frankenstein - Escort service - The thousand and second tale of scheherazade analysis - Cummings and worley organization development and change pdf - Dd form 1351 2 - 2 digit divisor division - Annotated Bibliography and Outline – Leadership Style - Www border gov au about contact offices locations panel physicians - Sun moon and talia - Paper - 2012 ipt hsc answers - Sgminer 5.6 1 github - Which consumer market segments best match with benihana - Chapter 8 1 application problem - Compute the required sales in dollars to break even - Communication Audit - Itec - It was an extraordinary gift for hope a romantic readiness - When a material is strain hardened - Gainsborough to scunthorpe bus - Structural steel quality control checklist - Albr3 lewis acid or base - Professional growth plan university of phoenix - Reciprocal space mapping tutorial - 0737179697 MAMA SHANANI ABORTION CLINIC IN VRYHEID - Crisis Management - Coupled shear wall ppt - Phases of the helping process in social work - P v2 r calculator - Bedourie camp oven anaconda - Sas enterprise miner variable roles - Statistics - Thin lens equation problems - Evaporative cooling food storage - Burial ceremony bruce dawe - 4800 x 1200 dpi meaning - 9 for 9.95 kfc - Value line publishing home depot lowes - Filming risk assessment form - Pennine gp training co uk - Social Work article summary - Grade 0 muscle strength - Service modeling in soa ppt - Java se8 certification dumps - Art history - Spotted marsh frog call - Progress notes - Argumentative essay bases in short stories