General Science - Biology MCQs

41. Which of the following is the correct statement about heterotrophs?

[A] They obtain their energy from sunlight, harnessed by pigments
[B] They obtain their energy by oxidizing organic molecules
[C] They make organic molecules from CO2
[D] They obtain their energy by consuming exclusively autotrophs

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42. Consider the following statements with reference to the active and passive immunity against the pathogens:
1. Vaccines provide us passive immunity
2. Passive immunity can be acquired only artificially
Which among the above statements is/ are correct?

[A] Only 1 is correct
[B] Only 2 is correct
[C] Both 1 & 2 are correct
[D] Neither 1 nor 2 is correct

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43. Strontium-90, as a source of health issues after a nuclear disaster is most dangerous for which among the following organs of Human Body?

[A] Liver
[B] Blood
[C] Skin
[D] Bones

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44. Which among the following usually regulates breathing in Humans?

[A] The number of red blood cells
[B] The amount of haemoglobin in the blood
[C] Inherent genetic control
[D] CO2 levels and pH sensors

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45. The reproduction where only one parent passes genes to the offspring is known as __?

[A] Epimixis
[B] Apomixis
[C] Pseudogamy
[D] Parthenocarpy

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46. In recent times, the Emerging Infectious Diseases (EIDs) have been a subject of concerns. What is the major reason for rise in the Emerging Infectious Diseases (EIDs)?

[A] Unwarranted use of antibiotics
[B] Too much soil and water pollution
[C] Heavy deforestation
[D] Unsanitary living conditions in third world

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47. Consider the following:
1. Red Snow
2. Red Rust (of tea)
3. Red Tide Which among the above is / are caused by algae?

[A] Only 1 & 2
[B] Only 1
[C] Only 3
[D] 1, 2 & 3

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48. Diabetes mellitus is associated with which of the following:
1. Too much insulin in the blood
2. Too high a blood glucose level
3. Blood that is too dilute
Select the correct option from the codes given below:

[A] Only 1 & 2
[B] Only 2 & 3
[C] Only 1 & 3
[D] Only 2

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49. Various applications of the DNA sequencing include:
1. Identifying a particular individual
2. Diagnosis of genetic and non-genetic diseases
3. Improve quality of livestock and crops
4. Confirm and establish species identity
Select the correct option from the codes given below:

[A] Only 1 & 2
[B] Only 1, 2 & 3
[C] Only 1, 3 & 4
[D] 1, 2, 3 & 4

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50. Which of the following is / are features of the Dengue mosquito?

  1. It is a day biting mosquito
  2. It transfers the virus generally human to human, without any animal reservoir
  3. It can be recognized by white markings on legs
  4. Only the female can spread Dengue

Select the correct option from the codes given below:

[A] Only 1, 2 & 3 are correct
[B] Only 2, 3 & 4 are correct
[C] 1, 2, 3 & 4 are correct
[D] Only 1 & 3 are correct

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