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The state of balance in the internal environment of the body it includes control of the water balance of the blood, body temperature, blood sugar level and blood urea level. Each of these internal factors is maintained by a separate mechanisms the central nervous system and the endocrine system. Before these systems can bring about any change they have to be supplied with information regarding the body state. Living cells and all the chemical reactions are controlled by enzymes; the enzymes are very sensitive to the conditions in which they work (PH). A slight fall in temperature or a rise in acidity may slow down or stop an enzyme from working and thus prevent an important reaction from taking place in the cell.
Cell membrane controls the substances which enter and leave the cell, but it is the tissue fluid which supplies or removes these substances, and it is therefore important to keep the composition of the tissue fluid as steady as possible. If the tissue fluid were too concentrated, it would withdraw water from the cells by osmosis and the body would be dehydrated. If the tissue fluid were too dilute, the cells would take up too much water from it by osmosis and the tissues would become waterlogged and swollen.
What are the excretory organs in protozoa.
Glycogenolysis: It is breakdown of glycogen to glucose by means of the reaction series shown in figure 6.11 Like glycogenesis it also occurs in all body cells , But
Mentalis The mental tubercles on either side of mental protruberance(in midline) gives origin to the mentalis muscle. Above the mentalis origin, the incisivus muscle takes orig
In the year of 1953, Watson and Crick worked out the 3-D structure of DNA, beginning from X-ray diffraction photographs taken through Wilkins and Franklin. They decreased which D
What are some biological examples in which lysosomic enzymes play a fundamental role? The remodelation of the osseous tissue, the function of acrosomes in sperm cells and the e
in natural vegetative propagation which structure gives rise to new individuals?
SYM P A THETI C NERVOUS SYSTEM These sympathetic chain are connected with ramus comminicause of thoracic & lumber part. Due to this reason this system is called as t
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Cap site Two usages are given below: 1] In eukaryotes, the cap site is position in the gene at which transcription begins, and really should be called the "transcription initia
Q. What are the Causes of constipation? The most common causes of constipation are poor elimination habits, a lack of fibre in the diet, insufficient fluid intake, lack of exer
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