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Yogita Ingle 5 years, 11 months ago
Gravitational force < weak nuclear force < electromagnetic or motive force < strong nuclear force.
- Gravitational Force – Weakest force; but infinite range.
- Weak Nuclear Force – Next weakest; but short range.
- Electromagnetic Force – Stronger, with infinite range.
- Strong Nuclear Force – Strongest; but short range.
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Meghna Thapar 5 years, 6 months ago
A nerve cell is like a receiver, transmitter and transmission line with the task of passing a signal along from its dendrites to the axon terminal bundle. ... This enhanced signal transmission is called saltatory conduction. Myelin insulates the axon to prevent leakage of the current as it travels down the axon. Nodes of Ranvier are gaps in the myelin along the axons; they contain sodium and potassium ion channels, allowing the action potential to travel quickly down the axon by jumping from one node to the next.
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Yogita Ingle 5 years, 11 months ago
Digestion of fats:
Butter is a fat product and gets digested in the small intestine. The bile juice secreted by the liver contains bile salts that break down large fat globules into smaller globules, so as to increase their surface area for the action of lipase. This process is referred to as emulsification of fats.
After this, the pancreatic lipase present in the pancreatic juice and the intestinal lipase present in the intestinal juice hydrolyse the fat molecules into triglycerides, diglycerides, monoglycerides, and ultimately into glycerol and fatty acids.
Fats
Triglycerides + Diglycerides
Diglycerides and monoglycerides
Fatty acids + Glycerol
Absorption of fats:
Fat absorption is an active process. During fat digestion, fats are hydrolysed into fatty acids and glycerol. However, since these are water insoluble, they cannot be directly absorbed by the blood. Hence, they are first incorporated into small droplets called micelles and then transported into the villi of the intestinal mucosa.
They are then reformed into small microscopic particles called chylomicrons, which are small, protein-coated fat globules. These chylomicrons are transported to the lymph vessels in the villi. From the lymph vessels, the absorbed food is finally released into the blood stream and from the blood stream, to each and every cell of the body.
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Yogita Ingle 5 years, 11 months ago
Le Chatelier’s principles, also known as the equilibrium law, are used to predict the effect of some changes on a system in chemical equilibrium (such as the change in temperature or pressure). The principle is named after the French chemist Henry Louis Le Chatelier.
Le Chatelier said that equilibrium adjusts the forward and backward reactions in such a way to accept the changes affecting the equilibrium conditions.
When factors like concentration, pressure, temperature, inert gases that affect equilibrium are changed, the equilibrium will shift in that direction where the effects caused by these changes are nullified.
Posted by Vanshika Singh 5 years, 11 months ago
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Yogita Ingle 5 years, 11 months ago
Producer equilibrium refers to the state where a producer is earning maximum possible profit by producing a particular level of output. This state is referred to as 'equilibrium' because a producer has no incentive to move away from this point, as such deviation will reduce his/her profit.
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Yogita Ingle 5 years, 11 months ago
Sino atrial node (SA node)
Atrio ventricular node (AV node)
It is located in the lateral wall opening of superior vena cava
It is present in atrio-ventricular septum.
It is longer
It is shorter
It is influenced by autonomic nervous system (ANS)
It is influenced by SA node
It acts as pacemaker
It acts as pacesetter
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