Answer:
The essential factor to increase the number of cells in a growing organism is that each and every cell has a complete copy of DNA.
Explanation:
The development and growth of an organism is based on the multiplication of its tissue cells. Cell multiplication in somatic cells occurs through mitosis, a process that allows obtaining<u> two identical daughter cells from a progenitor cell</u>.
DNA contains all the genetic information belonging to a living organism. In the process of mitosis, the DNA of each cell must be replicated so that each daughter cell has a complete copy of the original DNA. This ensures that each cell resulting from mitosis has the same structure and function as the original cell.
The other options are not correct because:
- <em>The </em><u><em>size of the cell is important</em></u><em>, since each cell has defined characteristics, according to the tissue it must form.
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- <u><em>Each and every cell needs to have a complete DNA</em></u><em>.
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- <em>In somatic cells, </em><u><em>DNA does not vary from one cell to another</em></u><em>.</em>
Answer:
As amoeba is a unicellular organism all the physiological processes are performed by the single cell.
Explanation:
The food is captured by the pseudopodia and after entering into the body it forms food vacuole. Then the food is broken down by enzymatic activities within the food vacuole and the simplified food absorbed by the cytoplasm.
The remaining undigested food is expelled by the plasma membrane. This is done by rupture of the cell membrane and the waste products diffused out of the plasma.
Most of the time the food captured by amoeba is absorbed more and less waste is formed.
Amoeba reproduces the process of binary fission. It is a type of asexual reproduction where the body is divided into 2, 4, 8.... then 16 and so on.. many cells. These small amoeboid cells grow and become new organisms.
As it is a single-cell organism, nutrition, assimilation, excretion, the reproduction process occurs at a fast rate.
The answer is the first one "discharge".
Answer:
Explanation:
because firstly they have shelter to keep warm and to rink water