272734849-UMUC-Biology-102-103-Lab-3-Cell-Structure-and-Function-Complete-Answer.doc

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UMUC Biology 102_103 Lab 3 Cell Structure and
Function Complete Answer
UMUC Biology 102_103 Lab 3 Cell Structure and Function Complete Answer
UMUC Biology 102/103
Lab 3: Cell Structure and Function
INSTRUCTIONS
On your own and without assistance, complete this Lab 3 Answer Sheet
electronically and submit it via the Assignments Folder by the date listed in the Course
Schedule (under Syllabus).
To conduct your laboratory exercises, use the Laboratory Manual located under
Course Content. Read the introduction and the directions for each exercise/experiment
carefully before completing the exercises/experiments and answering the questions.
Save your Lab 3 Answer Sheet in the following format: LastName_Lab3 (e.g.
Smith_Lab3).
You should submit your document as a Word (.doc or.docx) or Rich Text Format
(.rtf) file for best compatibility.
Pre-Lab Questions
1. Identify three major similarities and differences between prokaryotic and
eukaryotic cells.
2. Where is the DNA housed in a prokaryotic cell? Where is it housed in a
eukaryotic cell?
3. Identify three structures which provide support and protection in a eukaryotic
cell.
Experiment 1: Cell Structure and Function
The structure of a cell dictates the majority of its function. You will view a selection of
slides that exhibit unique structures that contribute to tissues function.
Materials
Onion (allium) Root Digital Slide Images
Procedure
1. Examine the onion root tip digital slide images on the following pages. Then
respond to the Post-Lab Questions.
Onion Root Tip: 100X
Onion Root Tip: 1000X
Onion Root Tip: 1000X
Onion Root Tip: 100X. Each dark circle indicates a different nucleus.
Onion Root Tip: 1000X
Post-Lab Questions
1. Label each of the arrows in the following slide image: A=Chromosomes
B=Nucleus, C=Cytoplasm, D=Cell Wall
2. What is the difference between the rough and smooth endoplasmic reticulum?