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NEET UG Neet B08 — practice questions

Explore 21 free Neet B08 questions in NEET UG Biology. Open each question or exercise to read its content, reference answers and available explanation.

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Neet B08 questions and exercises with answers

Showing questions 1–21 of 21.

Rheumatoid arthritis is an example of which immune disorder?Read the answer and worked solution →Which exposure can transmit ascariasis?Read the answer and worked solution →Which action targets the shared vector of dengue and chikungunya?Read the answer and worked solution →Which peptide-chain composition represents one antibody molecule?Read the answer and worked solution →Cells keep dividing despite contact with neighbouring cells. Which normal property has been lost?Read the answer and worked solution →A stained section of suspected tumour tissue is examined microscopically. Which method is this?Read the answer and worked solution →After regular drug use stops, anxiety, nausea and sweating appear. What does this indicate?Read the answer and worked solution →Chewing tobacco particularly increases the risk of cancer in the:Read the answer and worked solution →Which pair requires distillation of the fermented broth?Read the answer and worked solution →Which vessel supports large-scale microbial production in industry?Read the answer and worked solution →Which microbe is used for industrial production of citric acid?Read the answer and worked solution →Which microbial enzyme helps detergent remove oily stains?Read the answer and worked solution →Which enzyme pair is used to clarify bottled fruit juice?Read the answer and worked solution →Which microbial product is used as a clot buster after myocardial infarction?Read the answer and worked solution →Why is cyclosporin A useful after an organ transplant?Read the answer and worked solution →Why must a caterpillar eat leaves sprayed with Bacillus thuringiensis spores for this control to work?Read the answer and worked solution →Why favour a suitable baculovirus when beneficial insects must be conserved?Read the answer and worked solution →Under identical BOD test conditions, samples P, Q and R give 8, 20 and 400 mg/L. Which has the greatest organic pollution?Read the answer and worked solution →Why is a small part of activated sludge returned to the aeration tank?Read the answer and worked solution →Which statement about dengue is correct?Read the answer and worked solution →Chikungunya is a viral disease often associated with:Read the answer and worked solution →

Worked practice questions

Rheumatoid arthritis is an example of which immune disorder?

  1. Autoimmunity
  2. Passive immunity
  3. Immunisation
  4. Innate protection
Show answer and solution

Correct answer: A. Autoimmunity

In autoimmune disease, the immune system attacks self cells. NCERT gives rheumatoid arthritis as an example.

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Which exposure can transmit ascariasis?

  1. Inhaling droplets from a cough
  2. Eating vegetables bearing Ascaris eggs
  3. Being bitten by an Aedes mosquito
  4. Sharing a comb bearing fungal spores
Show answer and solution

Correct answer: B. Eating vegetables bearing Ascaris eggs

Ascaris eggs leave an infected person in faeces and contaminate soil, water and produce. Ingestion of these eggs can transmit ascariasis.

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Which action targets the shared vector of dengue and chikungunya?

  1. Heating milk before drinking
  2. Washing hands before meals
  3. Removing stagnant water from coolers
  4. Avoiding shared combs
Show answer and solution

Correct answer: C. Removing stagnant water from coolers

Both diseases are transmitted by Aedes mosquitoes. Removing stagnant water reduces mosquito breeding sites and helps control their vector.

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