Tissues are made from cells. Elimination of worn-out bits and pieces is preceded by the 'introduction' of new cells.
New cells are produced by the process called cell division, and this happens by the process known as mitosis.
reduction division
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When mitosis occurs, 2 genetically identical daughter cells are formed. Any guesses why its needed? Its needed for the following: 1. Growth of organs and organisms 2. Repair to damaged tissue 3. Replacement of worn-out cells eg. Red blood cells
1. For normal growth, development and maintenance. Example: A lizard with no tail will gain back its tail within some time due to mitosis. Mitosis will produce new cells which will help the lizard to get back its tail. If our skin is scraped, mitosis will produce new cells to replace back the worn out cells. If we donate a part of our liver, we will gain back that part of liver too because of mitosis. Overall, mitosis is required for the normal growth, development and maintenance.
1. For normal growth, development and maintenance. Example: A lizard with no tail will gain back its tail within some time due to mitosis. Mitosis will produce new cells which will help the lizard to get back its tail. If our skin is scraped, mitosis will produce new cells to replace back the worn out cells. If we donate a part of our liver, we will gain back that part of liver too because of mitosis. Overall, mitosis is required for the normal growth, development and maintenance.
Mitosis allows growth and replaces worn out or damaged cells.
Mitosis allows growth and replaces worn out or damaged cells.
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The formation of new cells is necessary for the following reasons: * multicellular plants and animals start life as single cells, the zygotes or fertilized egg cells; the process of Mitosis gives rise to many cells which differentiate to form tissues, organs and organ-systems of the organism. * mitosis results in an increase in size and growth of an organism, * cell reproduction is used to form new cells to renew certain tissues and to replace worn out cells * mitosis is also used as a form of asexual reproduction in some organisms like in unicellular Amoeba and multicellular Hydra as well as vegetative reproduction in plants.
They will do that when there are worn out. Time for replacement.
reduction division
Nutrition is the process of taking in food by a living being for growth of the body, repair of worn out tissues and to obtain energy. Nutrition is important because :- It repairs worn out tissues It helps us to obtain energy It grows the
what is the meaning of food
what is the meaning of food
what is the meaning of food
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Mitosis.