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Spores possess a highly resistant outer protective coat that allows them to endure extreme environmental conditions, such as heat, desiccation, and radiation, which vegetative cells cannot withstand. This resilience is due to their dormant state and the presence of dipicolinic acid, which stabilizes their DNA. Additionally, spores have low metabolic activity, unlike vegetative cells, which are actively growing and metabolizing.
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What are vegatative cells?
Vegetative cells are cells that are actively involved in the growth, development, and maintenance of an organism. In plants, these cells are responsible for processes such as photosynthesis, respiration, and nutrient uptake. In microorganisms, vegetative cells are the actively growing and dividing cells that carry out essential functions for survival.
Of what use is the endospore stain?
The use of endospore stain is to see specialized cell structures. It can tell if some bacterium cells contain higher resistant spores within vegetative cells.
Assume you stain Bacillus by applying malachite green with heat and then counterstaining with safranin Through the microscope the green structures are?
Bacillus cells stained with malachite green and safranin will appear red under the microscope due to the counterstaining with safranin. Malachite green primarily stains the spores of Bacillus while safranin stains the rest of the cell, resulting in red-stained vegetative cells and green-stained spores.
What parts of a moss have diploid cells?
2 sets of chromosomes in their vegetative cells and are said to be diploid, both have the same or similar genetic information.
How does culture age affect the results of a sproe stain?
Spores are formed when cells are under unfavourable conditions, as for the bacteria they are means of survival. So the older the culture the higher the cell number in that culture, which means less nutrients for the cells. Under this conditions cells will start spore production. Depending on the "age" of the culture you can get a mixture of vegetative cells with spores inside and spores that are already released or mostly spores with rare vegetative cells, which means the cells are dead.
What kind of cells does mitosis grow and repair?
Vegetative Cells...
What is germinating bacteria?
Germinating bacteria refers to the process by which bacterial spores, which are dormant and resistant to environmental conditions, undergo germination and develop into vegetative cells that are metabolically active and capable of growth and division. This process typically occurs in response to favorable environmental conditions that signal the spores to germinate and resume normal bacterial activity.
What cells divide by meiosis to produce male and female spores?
In plants, meiosis occurs in specialized cells called sporophytes, which are diploid. These sporophyte cells undergo meiosis to produce haploid spores—male spores (microspores) in the anthers and female spores (megaspores) in the ovules. In fungi, similar processes occur where specialized diploid cells, known as sporogenous cells, divide by meiosis to produce spores.
Where are spores?
Spores are produced by fungi, bacteria, and green plants. Spores in mushrooms are produced on special cells called basidia.
Where are endospores located within vegetative cells?
Endospores can form within different areas of the vegetative cell. They can be central, subterminal, or terminal. Central endospores are located within the middle of the vegetative cell. Terminal endospores are located at the end of the vegetative cell. Subterminal endospores are located between the middle and the end of the cell.
Do prokaryotic cells possess circular DNA?
Yes, prokaryotic cells possess circular DNA.
Where spores produced?
Spores are produced by fungi, bacteria, and green plants. Spores in mushrooms are produced on special cells called basidia.
