Lab 4 Assignment Template

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School

Carleton University *

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Course

1103

Subject

Biology

Date

Dec 6, 2023

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docx

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4

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Fall 2023 Lab 4 Experimental – Epithelial Cells & DNA Extraction BIOL 1103 Lab 4 Assignment – Examining Epithelial Cells & DNA Extraction Full Name: ____________________ Student #: ________________ Lab section: __________ Although the experimental work will be completed individually and in pairs, all work submitted must be completed individually. It is important that you do not copy from the lab manual or from each other. DO NOT plagiarize! Unless otherwise specified in the question, all answers should be written using complete sentences, paragraph style. Part I: Examination of Human Epithelial Cells 1. Using complete sentences, write a detailed description of the general characteristics of one of the cheek epithelial cells that you observed (4 marks) . 2. Using the space provided below, create a relatively detailed diagram of the cheek cell you described in Question 1. Be sure to include a proper figure title, diagram magnification, and label visible structures (3 marks) . 1
Fall 2023 Lab 4 Experimental – Epithelial Cells & DNA Extraction BIOL 1103 3. In the space below, calculate the actual size of a cheek cell and its nucleus, along with the magnification of your diagram (Question 2) relative to the actual cheek cell size. Show all calculations and units. Hint: Refer to Lab 1 background information for calculating actual size and magnification for a scientific drawing (6 marks) . Cheek Cell Size Nucleus Size Drawing Magnification 4. Think back to Lab 1, where you examined microorganisms in samples of river water. What are two noticeable differences between the epithelial cells you have just observed and the organisms you observed in Lab 1 (2 marks) ? Part II: DNA Extraction and Precipitation of Saliva 2
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