Answer:
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The bacteria can move by the means of swimming, pushing, twitching and gliding. They can also move randomly. They do not need any specific structures for their movements. Taxis, pilli, flagella and actin helps in their movement. The bacterial cell have the ability to move via taxis and can also use their pilli in order to move together. That is the reason the ETPUM on the Lycra-sealed slide is redistributed. The bacterial cells using taxis can gain energy from the polyurethane.
Answer:
One of Schwann and Schleiden’s ideas was that <em>cells were originated by spontaneous generation</em>, which was later rejected by Virchow.
Explanation:
Schwann studied animal tissues, and by observing them, he concluded that tissues were made of cells.
Simultaneously, Schleiden arrives at the same conclusion when studying vegetable tissues.
Around 1830, they met and together proposed the first cell theory. The theory stated that:
- Every living being is made of cells.
- Cell is the basic unit of life.
- Cells are originated by spontaneous generation.
Virchow, who studied human tissues, during his observations sow the cell in its dividing process. He then proposed that <u>cells were not originated from spontaneous generation</u>, but they were the product of other pre-existing cells and were originated by <u>cellular division</u>. He rejected the third state of Schwann and Schleiden’s ideas.
Decomposers, fungi, and microbes play an important role because they break down the remains of dead plants and animals.
