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NEET - Grade 12 - Biology - Human Health and Disease - Introduction and Snapshot of Human Health and Disease - Study ref# 959
Introduction: Health, for a long time, was considered as a state of body and mind where there was a balance of certain ‘humors’. This is what early Greeks like Hippocrates as well as Indian Ayurveda system of medicine asserted. It was ...
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NEET - Grade 12 - Biology - Human Health and Disease - Introduction and Snapshot of Human Health and Disease - Study ref# 960
Following sections must be covered to understand the Human Health and Disease: 1. Common Diseases in Humans. 2. Immunity 3. AIDS 4. Cancer 5. Drugs and Alcohol Abuse...
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NEET - Grade 12 - Biology - Human Health and Disease - Target Setup for Human Health and Disease - Study ref# 961
Student requires to achieve the following milestones to get better grip over Human Health and Disease. The milestones / targets are as follows: Starting Point: Days 0Test TypeAppear on TestTarget TestsScorePractice Test000%Chapte...
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NEET - Grade 11 - Chemistry - Environmental Chemistry - Study ref# 2240
What are the major causes of water pollution? Explain. Answer: Pollution of water originates from human activities. causes of water pollution are: (i) &nbs...
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NEET - Grade 12 - Biology - Human Health and Disease - Study ref# 10245
Name two diseases whose spread can be controlled by the eradication of Aedes mosquitoes. Answer: Dengue, Chikungunya//Yellow Fever/ Eastern Equine Encephalitis/ West Nile Fever/ Zika / Zika Viral Disease....
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NEET - Grade 12 - Biology - Human Health and Disease - Study ref# 10246
Retroviruses have no DNA. However the DNA of the infected host cell does possess the viral DNA. How is it possible? Answer: After infecting the host cell, the viral RNA undergoes reverse transcription in the presence of an enzyme reverse tr...
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NEET - Grade 12 - Biology - Human Health and Disease - Study ref# 10247
How do cytokinin barriers provide innate immunity in humans? Answer: Interferon (proteins), secreted by virus infected cells (protect non-infected cells from further viral infection)....
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NEET - Grade 12 - Biology - Human Health and Disease - Study ref# 10248
Thymus of a new born child was degenerating right from birth due to a genetic disorder. Predict its two impacts on the health of the child. Answer: Thymus provides micro-environment for the development and maturation of T-lymphocytes, its de...
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NEET - Grade 12 - Biology - Human Health and Disease - Study ref# 10249
Why is colostrum a boon to the newborn baby? Answer: Colostrum (Mother’s first milk) contains good amount of antibodies like IgA, which provide passive immunity to the new born and protects it from various infections....
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NEET - Grade 12 - Biology - Human Health and Disease - Study ref# 10250
Why is Gambusia introduced into drains and ponds? Answer: Gambusia is a type of fish that preys upon the larvae of mosquitoes. It is therefore introduced into drains and ponds to feed on mosquito larvae / to eliminate the vectors responsible...
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NEET - Grade 12 - Biology - Human Health and Disease - Study ref# 10251
How does haemozoin affect the human body when released in blood during malarial infection? Answer: Haemozoin is a toxic substance released by rupturing of RBCs in to blood during malarial infection. It causes chill and high fever, recurring...
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NEET - Grade 12 - Biology - Human Health and Disease - Study ref# 10252
Why is secondary immune response more intense than the primary immune response in humans? Answer: Body will have memory B cells of the first encounter / presence of antibodies developed during primary immune response....
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NEET - Grade 12 - Biology - Human Health and Disease - Study ref# 10253
When does a human body elicit an anamnestic response? Answer: Anamnestic response is the secondary response which is elicited when our body encounters with the same antigen to which the body has previously encountered....
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NEET - Grade 12 - Biology - Human Health and Disease - Study ref# 10254
Why sharing of injection needles between two individuals is not recommended? Answer: Sharing of injection needles is not recommended so as to avoid the transmission of STDs like AIDS and Hepatitis from the diseased person to the healthy pers...
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NEET - Grade 12 - Biology - Human Health and Disease - Study ref# 10255
State two different roles of spleen in the human body? Answer: Spleen is the secondary lymphoid organ that stores lymphocytes, it filters blood by trapping blood borne microbes by phagocytes and lymphocytes. It also acts as a large reservoir...
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NEET - Grade 12 - Biology - Human Health and Disease - Study ref# 10256
Name the condition in vertebrates where the body attacks self-cells? Answer: Auto immune disorder or auto-immune disease....
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NEET - Grade 12 - Biology - Human Health and Disease - Study ref# 10257
Suggest a method to ensure an anamnestic response in humans? Answer: Vaccination or Immunization (Active / passive) or weakened or inactive microbes or pathogens or proteins or antibodies introduced into the host body. ...
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NEET - Grade 12 - Biology - Human Health and Disease - Study ref# 10258
Name the stage of Plasmodium that gains entry into the human when bitten by an infected female Anopheles. Answer: Sporozoites...
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NEET - Grade 12 - Biology - Human Health and Disease - Study ref# 10259
Trace the route of Sporozoite of Plasmodium when it enters the human body through the bite of infected female Anopheles mosquito till its entry into the R.B.C. Answer: Sporozoites attack liver cells. Sporozoites reproduce asexually in liver ...
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NEET - Grade 12 - Biology - Human Health and Disease - Study ref# 10260
How are oncogenic viruses different from protoncogenes? Answer: Oncogenic viruses are cancer causing viruses / external cancer causing factor. Proto-oncogenes: Identified in normal cells which when activated (under certain condition) c...
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NEET - Grade 12 - Biology - Human Health and Disease - Study ref# 10261
Name the cells HIV (Human Immunodeficiency virus) gains entry into after infecting the human body. Explain the events that occur in these cells. Answer: HIV (Human Immunodeficiency virus) enters into macrophages after getting in human body....
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NEET - Grade 12 - Biology - Human Health and Disease - Study ref# 10262
Name the type of immunity a baby is born with. How is it different from the one he gets from the mother’s milk after birth? Answer: Innate immunity, Acquired Immunity that a baby acquires from his mother’s milk after birth is an example of ...
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NEET - Grade 12 - Biology - Human Health and Disease - Study ref# 10263
Name the cells that act as HIV factory in humans when infected by HIV. Explain events that occur in the infected cell. Answer: Macrophages / Helper T-cells act as HIV factory. The virus enters macrophages or helper T-cells where RNA genom...
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NEET - Grade 12 - Biology - Human Health and Disease - Study ref# 10264
Write the scientific names of the causal organisms of elephantiasis and ringworm in humans. Mention the body parts affected by them. Answer: Elephantiasis is caused by Wucherria Bancrofti and Wuchereria malayi. Legs/scrotum/lymphatic vessels...
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NEET - Grade 12 - Biology - Human Health and Disease - Study ref# 10265
State the functions of primary and secondary lymphoid organs in humans. Answer: (i) Bone marrow is the main lymphoid organ where all types of blood cells including lymphocytes are formed. (ii) The lymphocytes migrate to secondary lymphoid...
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NEET - Grade 12 - Biology - Human Health and Disease - Study ref# 10266
A 17-year old boy is suffering from high fever with profuse sweating and chills. Choose the correct option from the following the diseases which explains these symptoms and rule out the rest with adequate reasons. (a) Typhoid (b) Viral Fe...
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