Laboratory Experiments in Microbiology (12th Edition) (What's New in Microbiology)
12th Edition
ISBN: 9780134605203
Author: Ted R. Johnson, Christine L. Case
Publisher: PEARSON
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Chapter 36, Problem 1CA
Summary Introduction
To write:
The identification of worm and the criteria for identification.
Introduction:
Worms are differently distantly related animals that typically have long and cylindrical tube-like body, no limbs and no eyes. Worms vary in size from microscopic to one meter. Worms may also be called helminths.
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Laboratory Experiments in Microbiology (12th Edition) (What's New in Microbiology)
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- Please write, in paragraph form, how you would identify the organism step by step. Remember to provide as much detail as possible, including but not limited to staining procedures, identification methods and their results. You have been given the final answer (type of organism), now explain to me in detail how you would come to this conclusion Type of organism Topic is : Proteus vulgarisarrow_forwardA single tentacle has several nematocysts which can be viewed as small bumps on the surface of the tentacle. Nematocysts contain the stinging cells (cnidocytes). Label the nematocysts and cnidocytes and other parts observed in this 100x magnification of a tentaclearrow_forwardExperimental Planaria #1 Cut in half inte front (anterior) and rear (posterior) Day t Measuring the Planaria This operation is best performed by removing some of the water from the dish into the lid with a clean pipette and waiting for the worm to stretch out. Measure the length of the worm in millimeters. (Aways replace the water right away, you can use the dish lid to transfer water to and from the pianaran environment.) A. Record the length of the front (anterior) section jusAFTED you cut. This is your INITIAL front length: 5m 6) B. Record the length of the rear (posterior) section just AF TERGU cut. This is your INITIAL rear length: mro C. Observe and record any behavioral responses just after your cut Day 2 Spend time under the microscope observing the cut Planaria. Answer the following questions based on your observations. NO measurements will be taken on this daL. a) Are the cut fragments showing signs of regeneration? b) How did you identify the regenerating portion? What color…arrow_forward
- Write the term that the phrase describes. 1. Large knob that moves the stage or objective lens a great distance. Used with scanning or low-power objective lenses only. 2. Flat platform beneath the objective lens on which the microscope slide is placed. 3. Removable lenses that you look through to observe the microscope slide. 4. Small knob that moves the stage or objective lens a very small distance and is used for precision focusing. 5. Extends from the arm and contains the ocular lenses and rotating nosepiece. 6. Lens that condenses light through the specimen and is located below the stage. 7. Light from specimen passes through these lenses first. These lenses are located in the rotating nosepiece. 8. Wide bottom part that supports the microscope. 9. Regulates the amount of light passing through the condenser. 10. Vertical portion that connects the base to the head.arrow_forwardThe specimen you are examining is very thin and transparent. What can you do to make it easier to seearrow_forwardLabel the three following arrows and identify what the name of the whole specimen.arrow_forward
- Flatworms (phylum platyhelminthes) Procedure 1. Observe the live planaria, if present, under the dissecting. If there are no live specimens, view this video: https://www.youtube.com/watch?v=w0QzSYQGsnA a. What type of symmetry does the planaria display? b. Does the planaria exhibit cephalization? c. Can you locate the planaria eyespots? What do the eyespots sense? 2. View the large planaria model. Make sure you can identify the pharynx, the eyespots, and the flame cells. a. Does the planaria have a complete or incomplete digestive system? b. What is the function of the flame cell? c. Are planaria hermaphrodites? d. Scientists say planaria have ladder like organs. Why?arrow_forwardlabel the parts of the specimenarrow_forwardTo observe a Protista clearly Balqees should use Name of objective lens: ___________________ Total magnification ______________arrow_forward
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