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AP Intermediate 2nd Year Biology in Human Welfare & Health — practice questions — page 2

Explore 116 free Biology in Human Welfare & Health questions in AP Intermediate 2nd Year Biology. Open each question or exercise to read its content, reference answers and available explanation.

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Biology in Human Welfare & Health questions and exercises with answers

Showing questions 31–60 of 116.

Spot the one that does not belongRead the answer and worked solution →Order the reasoning: why vector control worksRead the answer and worked solution →Milk is converted into curd by which micro-organism?Read the answer and worked solution →The puffed up appearance of dough is caused by:Read the answer and worked solution →The yeast used in baking and brewing is:Read the answer and worked solution →The first antibiotic to be discovered was:Read the answer and worked solution →Municipal waste water is also called:Read the answer and worked solution →The gas produced by microbes from dung and used as fuel is:Read the answer and worked solution →Lactic acid bacteria coagulate milk protein by producing:Read the answer and worked solution →Penicillin was named after which mould?Read the answer and worked solution →Cyclosporin A is obtained from which organism?Read the answer and worked solution →BOD stands for biochemical oxygen:Read the answer and worked solution →Sewage is treated until its BOD is:Read the answer and worked solution →Bacteria that produce methane in a biogas plant are called:Read the answer and worked solution →A common methane producing bacterium is:Read the answer and worked solution →Biogas made from cattle dung is commonly called:Read the answer and worked solution →The fungus developed as a biological control for plant disease is:Read the answer and worked solution →Baculoviruses are used as biological control agents against:Read the answer and worked solution →Root nodules of legumes are formed by symbiosis with:Read the answer and worked solution →Cyanobacteria such as Anabaena serve as biofertilisers in:Read the answer and worked solution →Match the microbe to its productRead the answer and worked solution →Sort the microbe usesRead the answer and worked solution →True or false about useful microbesRead the answer and worked solution →Order the curd making stepsRead the answer and worked solution →Complete the antibiotic storyRead the answer and worked solution →Name the microbe or termRead the answer and worked solution →Spot the odd one outRead the answer and worked solution →Microbes in human welfare bingoRead the answer and worked solution →Antibodies passed from a mother to her infant through breast milk give the infantRead the answer and worked solution →The yeast used in baking and brewing is:Read the answer and worked solution →

Worked practice questions

Spot the one that does not belong

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Questions
  1. Items
    1. Waste disposal
    2. Cell division
    3. Water decontamination
    Odd item
    Cell division
  2. Items
    1. Mosquito
    2. Vector
    3. Chromosome
    Odd item
    Chromosome
  3. Items
    1. Photosynthesis
    2. Typhoid
    3. Cholera
    Odd item
    Photosynthesis
One item is not a preventive measure. Source: syllabus Biology, Human Health and Disease.

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Order the reasoning: why vector control works

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Steps
  1. The pathogen needs a vector to reach a new host
  2. For malaria that vector is the mosquito
  3. Mosquitoes breed in accessible standing water
  4. Removing those breeding sites cuts the mosquito population
  5. With fewer vectors, transmission falls
Break the chain and the disease cannot spread. Source: syllabus Biology, Human Health and Disease.

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Milk is converted into curd by which micro-organism?

  1. Lactobacillus
  2. Penicillium
  3. Baculovirus
  4. Methanogen
Show answer and solution

Correct answer: A. Lactobacillus

1. A starter of old curd is added to warm milk. 2. The bacteria in it multiply and act on the milk. 3. Lactobacillus and other such bacteria make the curd. 4. So the answer is Lactobacillus. _Source: syllabus Biology, Ch 8 'Microbes in Human Welfare'_

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