<em>by definition- a stem cell is an undifferentiated cell of a multi-cellular organism which is capable of giving rise to indefinitely more cells of the same type, and from which certain other kinds of cell arise by differentiation.</em>
an example
Stem cells have the potential to be whatever they want to be. Stem cells are able to develop into many different types of cells and can repair your body.
there are two types
adult stem cells and embryonic stem cells
Explanation:
Metabolites are the different kinds of the substances which are essential to metabolism of the organism.
Metabolites produced by the plants can be categorized into the primary metabolites and the secondary metabolites.
The primary metabolites have important role in survival of plant and play an active role in the respiration and the photosynthesis.
On the other hand, the secondary metabolites are not involved in normal growth and the development of plant. Although absence of these type of metabolites can lead to impairment of survivability of plant in long run.
<u>Secondary metabolites are produced mostly by the plants for the defense purposes.</u> They include steroids, alkaloids, phenolics, essential oils, resins, tannins, lignins, flavonoids, etc.
Purines have 2 rings pyrimidines have 1 ring.
Answer:
Ocean exploration is beneficial as it leads to the discoveries of unexpected things. By exploring the oceans, we can look for the baseline information which helps us to have a better understanding of the environmental changes. The mysteries hidden in the deep oceans can prove to be sources for better medicinal drugs, nutrients, energy, food and other types of products and substances. Hence, ocean exploration will also be beneficial for our future generations as many valuable products can be found from the oceans which will lead to the betterment of human life.
Through the duplication and modification of pre-existing genes.
