Biology CH 4 LAB

docx

School

Pennsylvania State University, World Campus *

*We aren’t endorsed by this school

Course

101

Subject

Biology

Date

Feb 20, 2024

Type

docx

Pages

Uploaded by MajorMetal2194

Name: Stephanie Lasprilla Date: 02/17/2021 Virtual Microscope by BIONETWORK ONLINE EDITION http://www.ncbionetwork.org/iet/microscope / Instructions: You can use the “learn” tab to familiarize yourself with the virtual microscope. As you click on each of the microscope parts, read the pop-up to answer the following. 1. Identify each of the following by letter. On/Off Switch – K Eyepiece / Ocular Lens - C Arm - J Nosepiece - F Objective Lenses - G Stage - D Diaphragm - H Stage Adjustment - E Base - M Coarse Adjustment - L Lens Paper - A Fine Adjustment - N Immersion Oil - B Slide box - P Kimwipes - D 2. Explain what each of the following does:

- Kimwipes: o Brand of specialty paper-based cleaning wipes suited for cleaning laboratory equipment and instruments, camera lenses, fiber optic connectors and other sensitive electronic components. These are not lens papers and should not be used to clean microscopes as they can damage the lens. - Immersion oil: o Special oil used exclusively with a 100X or higher objective lens, typically at 1000X total power. Acting as a bridge between the glass lens and the glass slide, the oil concentrates the path of light to increase the resolution of the image - Diaphragm o Five hole disc housed under the stage that adjusts the amount of light passing through the stage opening. - Stage Adjustment Knob o Mechanical stage allows for adjustment of slide position forward, backward, and left or right. Go to the “EXPLORE” tab to view slides. You will need to use the coarse and fine focus and adjust the light to get clear views of the following. The slide can also be moved within the viewing field. Sample Slides - Letter E

3. Include a screenshot of the letter “e” at 10x. To take a screenshot, use the print screen on your keyboard or use your phone to capture the screen. Insert the image in the space below. Your image should clearly show that you viewed the “e” and focused it.

Your preview ends here

Eager to read complete document? Join bartleby learn and gain access to the full version

Access to all documents
Unlimited textbook solutions
24/7 expert homework help

4. What did you need to do before viewing the slide at 100x? When you switch to a 100X lens, you must turn the nosepiece halfway, add immersion oi proceed to snap the lens into place. 5. A common mistake for beginners is thinking that the “e” just disappears at the high magnification. How would you explain to a younger student what happened to the e as you increase the magnification? As the “e” increased in magnification, you can clearly see the lines of the “e” In further d thought possible.

Plant Cells Return to the slide box and choose plant slides → plant cells. Focus with 4x, 10x, and 40x. You may need to adjust the light and center your slide. 6. Include a screenshot of the plant cells at 40x.

7. Plant cells can be identified by their boxy appearance, where lines represent cell walls. Within the cell are green circles which are chloroplasts and a dark gray area which represents the nucleus. At 40x, how many individual cells can be seen in the viewing field? 15 Human Blood Return to the slide box and choose human → blood Focus with 4x, 10x, and 40x. You may need to adjust the light and center your slide.

Your preview ends here

Eager to read complete document? Join bartleby learn and gain access to the full version

Access to all documents
Unlimited textbook solutions
24/7 expert homework help

8. Include a screenshot of the blood cells at 40x.

9. Blood cells can be identified by their round appearance. Unlike plant cells, they do not have cell walls. At 40x, how many individual blood cells can be seen in the viewing field? About 50 10. At 100x, you will see a cell that is larger and has a dark shape in it. This cell doesn’t look like the others because it is a white blood cell and it functions to protect your body against microbes. Red blood cells do not have a nucleus. White blood cell count is used as a diagnostic tool to determine if someone is sick. If you were fighting an infection, would you expect to have more or less WBC’s? Why? If I was fighting an infection, I would expect to find more WBC’s because White blood cell cells responsible for fighting off an infection. Therefore, the more WBC’s found, it is more that there is an infection present. Synthesis and Discussion

11. Compare blood cells to plant cells, include details about color, general shape, and size. Write this as a complete sentence or paragraph. Plant cells have a boxy like appearance and are a striking green in color due to presence chloroplasts. The box like structures vary in size and resemble bricks. Blood cells are sma circular in size and shape. Blood cells are scattered-like everywhere, different from the or plant cells. 12. Explore bacteria slides. You don’t need to screenshot them. Compare the bacteria slides to the blood cells and include details about their color, general shape, and size. Write this as a complete sentence or paragraph. Bacteria slides are abstracted/deformed in shape compared to blood cells. The bacteria c In color and are smaller than red blood cells.

Your preview ends here

Eager to read complete document? Join bartleby learn and gain access to the full version

Access to all documents
Unlimited textbook solutions
24/7 expert homework help

Related Documents

Osmosis revised in person.docx

Chapter 10.docx

1.11 Quiz The Lymphatic and Immune System.docx

202 Week 04 Lab Population Thinking.docx

Lab 5 OL pipetting.docx

hw01-sol.pdf

Activity 2- Folate metabolism.docx

BIOL 1104 - Practice Tests.pdf

2024_ProblemSet_1(1).docx

unit 1 A&P review.pdf

Fermentation with Yeast Background.pdf

_Lab Report 2_6_24.docx

Recommended textbooks for you

Basic Clinical Laboratory Techniques 6E

Biology

ISBN:9781133893943

Author:ESTRIDGE

Publisher:Cengage

Principles Of Pharmacology Med Assist

Biology

ISBN:9781337512442

Author:RICE

Publisher:Cengage

Comprehensive Medical Terminology

Nursing

ISBN:9781133478850

Author:Jones

Publisher:Cengage

Biomedical Instrumentation Systems

Chemistry

ISBN:9781133478294

Author:Chatterjee

Publisher:Cengage

Essentials Health Info Management Principles/Prac...

Health & Nutrition

ISBN:9780357191651

Author:Bowie

Publisher:Cengage

Complete Textbook Of Phlebotomy

Biology

ISBN:9781337464314

Author:Hoeltke

Publisher:Cengage

SEE MORE TEXTBOOKS

Recommended textbooks for you

Basic Clinical Laboratory Techniques 6E
Biology
ISBN:9781133893943
Author:ESTRIDGE
Publisher:Cengage
Principles Of Pharmacology Med Assist
Biology
ISBN:9781337512442
Author:RICE
Publisher:Cengage
Comprehensive Medical Terminology
Nursing
ISBN:9781133478850
Author:Jones
Publisher:Cengage
Biomedical Instrumentation Systems
Chemistry
ISBN:9781133478294
Author:Chatterjee
Publisher:Cengage
Essentials Health Info Management Principles/Prac...
Health & Nutrition
ISBN:9780357191651
Author:Bowie
Publisher:Cengage
Complete Textbook Of Phlebotomy
Biology
ISBN:9781337464314
Author:Hoeltke
Publisher:Cengage