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Ascaris Worm Experiment

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Questions and Answers

What confirms an Ascaris infection in a diagnosed patient?

High white blood cell count in the bloodstream

Symptoms of abdominal pain and nausea

Presence of Ascaris eggs or parts in a stool sample (correct)

Observation of worm movement in the gut

Which statement accurately describes the properties of Ascaris eggs under the microscope?

They have a thin outer shell and are translucent.

They are flat and less than 20 micrometers in size.

They are round and approximately 100 micrometers in diameter.

They are oval in shape and about 50 micrometers long. (correct)

What role does the microscope play in observing Ascaris eggs?

It increases the weight of the sample for better identification.

It allows for examination at different magnifications. (correct)

It can chemically alter the eggs for better visibility.

It can isolate the eggs from the stool sample.

How does the number of Ascaris eggs correlate with the severity of infection?

Higher egg counts suggest a more severe infection. Signup and view all the answers

What is the purpose of using iodine solution during the experiment?

To enhance the contrast of the eggs under the microscope. Signup and view all the answers

Which item is not necessary for preparing the slide for microscopic examination?

Microscope lens cleaner Signup and view all the answers

What is the first step in diagnosing an Ascaris infection?

Collecting a small sample of stool. Signup and view all the answers

What characteristic of the Ascaris egg's outer shell is noted in the microscopic examination?

It is thick and distinct. Signup and view all the answers

Which magnification was used to observe the Ascaris eggs in the experiment?

40x magnification Signup and view all the answers

What is the purpose of covering the sample with a coverslip?

To minimize movement of the sample during observation. Signup and view all the answers

Study Notes

Ascaris Worm Experiment

Experiment goal: To observe the shape of Ascaris worms and their eggs under a microscope.
Materials: Stool sample, normal saline, iodine solution, slide, coverslip, microscope.
Tools: Wooden stick.
Experiment steps:
- Collect a small stool sample.
- Place a drop of saline solution on a slide, add some stool sample, and mix.
- Add a drop of iodine solution (optional).
- Place a coverslip over the sample.
- Examine the slide under the microscope at different magnifications to identify Ascaris eggs.
Observation: Under 40x magnification, Ascaris eggs are oval-shaped, measuring approximately 50 micrometers in length and 30 micrometers in width. The eggs have a thick, distinct outer shell.

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Description

This quiz delves into an experiment conducted to observe Ascaris worms and their eggs using a microscope. Participants will learn about the materials and steps needed to successfully carry out the experiment and the key observations made during the process. Ideal for biology students and enthusiasts.