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Hey There!</h2><h2>
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Answer:</h2><h2>
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the Cell Theory was give by German scientists, Schleiden and T.Shwan in 1839. It stated that,
- All organism are composed of one or more cells
- The cell is the structural and functional unit of life
- It is a de novo structure, that means it COULD arise from non living thing which was incorrect.
It was corrected by the German pathologist Rudolf Virchow in 1855. He made a convincing case, corrected and added the third point of the cell theory. It is,
- Cells can arise only by a division of pre-existing cell. It is <u>NOT</u> a de novo structure.
Cell theory brought a great evolution in the field of biology which established the function of organism is the result of activities and interaction of the cell units.
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- <u>Flask 1</u>: It is observed that there are no micro-organism, this is because the meat is sealed and no micro-organism could enter through it.
- <u>Flask 2</u>: It is observed that there are micro-organism present because meat is not sealed but open.
- <u>Flask 3</u>: As the S tube is used, the micro-organism are not able to reach the meat because of the curvy path
These observations support the point that<u> cells could arise only by a division of pre-existing alive cells</u> because in Flask 1 when there were no micro-organism present so there was no organisms found so no micro-organism arised, In flask 3 the S tube was used so no micro-organism could reach the meat thus there were no organism there which could divide to reproduce. The flask 2 was open, so the micro organisms reached the meat so they divided which means Cells can only arise by a division of pre-existing cells.
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_____________________________________</u></h2><h2>Best Regards,</h2><h2>'Borz'</h2>
Fimbriae, flagella and pili are all examples of blank structures found in some bacteria.
The branch of the posterior descending artery that supplies blood to the inferior chamber of the heart. The LMCA supplies blood to the left side of the heart.
<h3>What is the arterial network?</h3>
The circulatory system, also known as the vascular system, is made up of the blood and lymphatic vessels that transport fluid throughout the body. In addition to delivering oxygen and nutrients to the tissues and eliminating waste from the cells, the arteries and veins move blood throughout the body.
<h3>Which organ has arteries in it?</h3>
The blood vessels known as arteries carry oxygen-rich blood from the heart to all of the body's cells. They are a part of your cardiovascular system, which circulates your blood. For your body to receive nutrition, hormones, and oxygen, they are necessary.
To know more about Arteries visit:
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Answer:
Geological events can cause drastic changes over long periods of times
Explanation:
He used these insights and stated that Geological events can cause drastic changes over long periods of time. Such changes can cause entire species to become extinct or cause drastic evolutionary physical changes to other species. This is because the environment changes and the animals living in these environments need to adapt in order to be able to survive. Some changes such as continental drift can even move species to different parts of the world where the climate is drastically different.
Answer:
The correct answer is - The cell would be unable to produce.
Explanation:
Cyclin is a protein that helps in cell division to complete the various stages. It has an essential function, however, cyclin does not play role in enzymatic reactions bit bind with cyclin-dependent kinase enzyme they form maturation promoting factors which can phosphorylate specific proteins and result in many different stages of the cell cycle.
Mutation in cyclin gene that did not allow to produce cyclin protein will cease the cell cycle and there would be no future daughter cell and the cell would not be able to produce.
