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Explain Gut secretions - External Defence Mechanism
From the saliva and respiratory tract, bacteria reach the gut, here they are killed by the hydrochloric acid and proteolytic enzymes of the gastric juices. They are capable of killing the microbes. If they further escape and reach the large intestine, they are attacked by the gut microbes, which secrete antibiotics that kill many pathogenic bacteria. Note: Hepatitis A virus survives gastric juice.
ehat is protoplasm and other levels of organization
Q. Do you know of any activity which may be polluting this water source? Answer: The discharge of waste water from homes, industries, hospitals, etc. into the river pollutes thi
Ecology and environment: Today, we hear people from different walks of life, using the terms ecology and environment. Politicians, leaders. town planners, students and archit
how is metal tyre fitted onthe wheel of bullock cart
Explain Maintenance of pH - Functions of Bile Maintenance of pH: Bile neutralises the hydrochloric acid and helps to maintain a suitable pH. This prevents the injurious effects
upright, turn around 180 degrees to face opposite direction Take several steps forward. Reach forward and grasp a door knob Turn a door knob 180 degrees clockwise Sit down in a cha
What is a hypothesis? Ans) A hypothesis is a postulation as to what could be the case; it is a suggestion as to something that precisely models and describes some aspect in re
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1. Sketch and explain different regions of phase diagram of water (pressure vs. temperature). 2. Explain how air inhalation and expiration takes place through pressure gradient
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