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Q. What are vitamins? What are the major vitamins needed by humans?
Most vitamins are coenzymes fundamental substances for the enzyme functioning that are not produced by the organism and must be obtained from the diet.
The main vitamins needed by humans are vitamins A, C, D, E, K, the vitamins of the B complex including folic acid, biotin and pantothenic acid.
Classification of the river zones The course of a river can be classified in two ways Firstly by its physical characteristics and Secondly by the presence or absen
Q. Of which kind of tissue is the heart made? How is this tissue oxygenated and nutrified? The heart is made of striated cardiac muscle tissue and the heart muscle is called th
What is a community? What is the difference between the concepts of community and population? A community is a set of the populations of living beings that live in the same reg
In general what is the cause of the aneuploidies? In general the aneuploidies are caused by impaired assortment of chromosomes during meiosis. For instance, when the homologous
Both these neurotransmitter strengthen memory when they are released into the blood stream following learning. Stressful events stimulate release of stress hormones from the adrena
COPPER It is a trace element which is available in most of the fruits. Maximum in heart, brain, kidney & crustaceans. By its deficiency monkin's disease is caused. Cop
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Define Factors Affecting Energy Expenditure and Requirement? As mentioned earlier, the energy needs vary widely among individuals in a group. Why? A number of factors cause the
Q. What are the main causes of Mutation? Some mutations take place randomly and spontaneously during process of mitosis or meiosis. Others are caused by mutagenic agents that a
Q. How are gases exchanged in sponges? The gas exchange in sponges happens by diffusion from the exterior to the cells that absorb molecular oxygen and liberate carbon dioxide.
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