Growth hormone is produced by the pituitary gland, a small gland like a bean, located in the lower part of the brain. As the name says, this hormone is absolutely essential for providing physical growth. However, this hormone also has an influence on the body's metabolism.
It was already known that GH is linked to bone development and height increase and is found in large quantities in muscles, liver, tissues and organs directly involved in growth metabolism. After some scientific studies and experiments, it was discovered that the brain is also full of receptors for this hormone.
Previously, leptin was believed to be the main hormone to work to conserve energy in cases of dietary limitations. When there is weight loss, circulating leptin levels in the bloodstream fall. Leptin is a hormone produced by the body's cells that store fat. When leptin levels start to lose fat, the levels drop a lot and the brain feels this drop and activates the hunger and energy saving mechanisms.
indicator to a known substance and water. Why is
that important? Check all reasons.
Answer:
The correct answer is -
- to match the mystery food sample to a definite positive result (gelatin, oil.)
- to match the mystery food sample to a definite negative result (water)
Explanation:
Adding an indicator or any indicator to an unknown food sample or any sample and then adding the same indicator to the known sample is necessary to check and confirm the positive result and negative result that will help to match with the experiment result.
For positive result adding an indicator to get a definite positive result to mystery food for example gelatin or oil. Similarly for a definite negative result adding it to known food or water.
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If the cell membrane does not allow the water or solute particles to pass through it then the cell will be deficient in those particles which could even lead to the deathof cell.
The animal cell has an outermost covering which is known as the cell membrane or the plasma membrane. It is selectively permeable in nature. It only allows some solute particles to move across it. The cell membrane does not allow all the particles to move across it, as a result the restricted particles requires a protein or ligand through which it can cross the membrane.
Cell membrane is made up of phospholipids and membrane proteins. Their is a lipid-bilayer in which some proteins are embedded are known as integrated proteins and some are present on the membrane. Cell membrane is present in all types of cells, however a cell wall is also present in plants outside the cell membrane.
Learn more about Cell membrane here:
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the ozone layer help insulate earth :.................