Refined grain products like bread, flour tortillas, white rice, cornmeal, crackers etc are enriched with riboflavin, niacin, iron and thiamin.
Enriched grains is finely ground endosperm of the kernel. Enriched grain products are good as a source of iron and four types of vitamin B which includes niacin, thiamin, folic acid and riboflavin and also contains some complex carbohydrates.
Wheat and rice are a staple diet in many regions of the world but excessive polishing and refining the cereals removes the essential nutrients or vitamins which have their own important physiological roles.
The iris controls the amount of light entering the eye.
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Most scientists rejected Wegener's theory because he could not explain the force that pushes or pulls the continents.
Duck viewed relationships as a series of events. There are four main phases, in which the perception of the people involved in the relationship changes due to strain from different factors. The phases are:
1) Intra-psychic phase
The individual does not express dissatisfaction or unhappiness with the relationship yet but feels it.
2) Dyadic phase
Discussion regarding the negative feelings is usually carried out in this phase, and anger and guilt tend to rise.
3) Social phase
The separation of the two individuals is shared socially and both choose their own friends and supports for this phase.
4) Grave-dressing phase
This phase occurs some time after the relationship has ended, and the individuals will look back thinking of all the things they did correctly, while also recollecting the negatives of the other person. Trust in relationships is rebuilt in this phase as the individual becomes ready for a new relationship.
Answer:
Defense against a particular antigen is provided by adaptive immunity which is also called specific immunity. In adaptive immunity immunological memory is created which is used by immune cells to destroy that particular pathogen when it again comes in the body.
Adaptive immunity involves T cells and B cells. T cells generate cell mediated immune response and B cells generate a humoral immune response. These responses by T and B cells are specific to a particular pathogen which results in the killing of the pathogen by their phagocytosis enhanced by antibodies or by direct killing of pathogen.
Therefore adaptive immunity provides defense to the body against a particular pathogen by generating immunological memory.
