Tag: anaemia

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Questions Related to anaemia

Multiple choice evs a treat for mosquito anaemia mosquito and human health diseases caused by mosquitoes

Choose the correct answer from the alternatives given.
Fehlings reagent is used for testing:

  1. Reducing sugars

  2. Non-reducing sugars

  3. Stereoisomerism

  4. Asymmetry of carbon atoms
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Fehling's reagent is a chemical reagent used to differentiate between water-soluble carbohydrates and ketone functional groups. This reagent is used for testing the presence of reducing sugars. Reducing sugars give a positive result to this test due to the presence of oxidisable aldehyde group.

Non-reducing sugars like sucrose can be tested by Tollen's reagent.
So, the correct option is 'Reducing sugars'.

Multiple choice evs a treat for mosquito anaemia mosquito and human health diseases caused by mosquitoes non communicable diseases

Anaemia is caused due to 

  1. Shortage of blood

  2. Shortage of bones

  3. Increase in the amount of blood

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Anaemia is a condition in which is there is shortage of blood or shortage of red blood cells. It results due to loss of blood during accident or pregnancy. It can also results due to insufficient iron in the body to produce enough of haemoglobin.

Thus, the correct answer is option A.

Multiple choice biology diseases and hygiene anaemia mosquito and human health non communicable diseases

Why foods derived from genetically modified crops required to be tested for possible allergic reactions in people?

  1. They may cause allergies due to release of new kind of proteins.

  2. They may not be digested.

  3. They may cause more hunger.

  4. All of the above.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The process of creating a GM crop can produce many changes in the natural functioning of the plant's genome. Native genes can be mutated, deleted, permanently turned on or off and may change their levels of protein expression. This increasing the levels of an existing protein or even producing a completely new and unknown protein within the crop can act as an allergen in consumers. Hence, foods derived from genetically modified crops are required to be tested for possible allergic reactions in people.

Multiple choice biology diseases and hygiene anaemia mosquito and human health non communicable diseases

Allergic reaction occur due to release of 

  1. Hormones

  2. Histamines

  3. Enzymes

  4. Lysozymes
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
  • An allergic reaction occurs due to the hypersensitivity of the immune system to a harmless substance known as an allergen.
  • Antibodies are produced by the B-lymphocyte cells which destroy the allergens.
  • Destruction of allergens by the antibodies causes the release of a chemical substance into the bloodstream called histamine. 
  • The release of histamine in a large amount causes swelling of body tissues (inflammation), itching, enlargement of blood vessels and causes bronchospasm.
  • So, the correct answer is 'Histamines'.
Multiple choice biology diseases and hygiene anaemia mosquito and human health non communicable diseases

Sting of _______cause allergy.

  1. Butterfly

  2. Grasshopper

  3. Ant

  4. Bee
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • Sting of bee causes allergy.
  • When a bee stings it releases bee venom into the human body which triggers allergic reactions.
  • The bee venom contains proteins which affect the skin cells and triggers the immune system to produce antibodies called Immunoglobulin that results in pain and swelling at the site of the sting.
  • So, the correct answer is 'Bee'.
Multiple choice biology diseases and hygiene anaemia mosquito and human health non communicable diseases

Allergy that occurs throughout the year is called _______allergy.

  1. Seasonal

  2. Perennial

  3. Biennial

  4. Annual
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
  • Perennial allergy can be defined as a chronic allergic reaction to house dust.
  • House dust contains mould and fungal spores, fibres of the fabric, pet dander and insect particles.
  • These allergies occur throughout the year hence, they are called perennial allergy.
  • So, the correct answer is 'Perennial'.
Multiple choice biology diseases and hygiene anaemia mosquito and human health non communicable diseases

Which of the following plants doesn't contribute to pollen allergy?

  1. Chenopodium

  2. Sorghum

  3. Rose

  4. Amaranthus
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

i) Chenopodium and Amaranthus also are known as lambs quarters are belonged to family Amaranthaceae and are a major cause of pollen allergies are also considered as weeds or invasive species.

ii) Sorghum which is worlds fifth most important cereal and belongs to family Poaceae is also producing pollen that causes allergy.
iii) Rose pollens are not allergy agents.
So the correct option is 'Rose'.

Multiple choice biology diseases and hygiene anaemia mosquito and human health non communicable diseases

Which of the following is the causative agent of hay fever?

  1. Female Aedes mosquito

  2. Tse tse fly

  3. Plant pollen

  4. Trypanosoma gambiense
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Hay fever is also known as seasonal allergy or allergic rhinitis is look like cold and symptoms are also similar like:-

i) Running nose.
ii) Watery, itchy, red eyes (allergic conjunctivitis).

iii) Sneezing
iv) A cough
v) Itchy nose, the roof of the mouth or throat
vi) Swollen, blue-colored skin under the eyes (allergic shiners).
These are caused by tree pollen, grass pollen, ragweed pollen etc.
So the correct option is 'Plant pollen'.