Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Why is it favorable for protozoa to replicate with schizogony versus using simple mitosis?
what are the different scenarios that can occur with regards to bacterial growth within a thioglycolate tube? Explain why certain bacteria require one classification versus a different classification.
A botanist has been using betaproteobacteria to grow his herb garden, because betaproteobacteria require little nutrients to grow. His garden does not grow successfully, so he comes to you for help to develop the herb garden. Which class of gram negative bacteria would you suggest and why? Why was the botanist’s original idea not going to work?
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- Protozoa, like all living organisms, reproduce to ensure the survival and continuation of their species. Protozoa can reproduce asexually by simple mitosis, where a single parent cell divides into two genetically identical daughter cells. Alternatively, some protozoa can also reproduce by a process called schizogony, also known as multiple fission or sporogony.
- Thioglycolate tubes are used to culture bacteria and determine their oxygen requirements. The tubes contain a nutrient broth that is supplemented with a reducing agent (such as thioglycolate) and an indicator (such as resazurin) to visualize oxygen penetration. Bacteria will grow in different regions of the tube depending on their oxygen requirements, and this allows for the classification of bacteria based on their growth patterns.
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