Biology Practice Question and Answer

Q:

Deficiency of which of these vitamins causes anaemia in humans?

480 0

  • 1
    Vitamin C
    Correct
    Wrong
  • 2
    Vitamin B
    Correct
    Wrong
  • 3
    Vitamin A
    Correct
    Wrong
  • 4
    Vitamin B12
    Correct
    Wrong
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Answer : 4. "Vitamin B12"
Explanation :

1. Anemia in humans is caused by a deficiency of Vitamin B12.

2. Vitamin B12 is a water-soluble vitamin

3. Which is necessary for the formation of red blood cells?

4. The most common cause of anaemia is low iron levels in the body. This type of anaemia is called iron deficiency anaemia.

Q:

Which one is the first heart sound?

479 0

  • 1
    Lub during closure semilunar valves
    Correct
    Wrong
  • 2
    Lub during closure of atrio-ventricular valves
    Correct
    Wrong
  • 3
    Dub during closure of atrio- ventricular valves
    Correct
    Wrong
  • 4
    Dub during closure of semilunarvaleves
    Correct
    Wrong
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Answer : 2. "Lub during closure of atrio-ventricular valves"

Q:

Which of the following enzymes is found in saliva of human body which breaks down starch into simple sugar? 

478 0

  • 1
    Amylase
    Correct
    Wrong
  • 2
    Trypsin
    Correct
    Wrong
  • 3
    Pepsin
    Correct
    Wrong
  • 4
    Renin
    Correct
    Wrong
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Answer : 1. "Amylase "

Q:

Which of the following is a correct match?

476 0

  • 1
    Down's syndrome - 21st chromosome
    Correct
    Wrong
  • 2
    Sickle-cell anaemia - X-chromosome
    Correct
    Wrong
  • 3
    Haemophilia - Y- chromosome
    Correct
    Wrong
  • 4
    Parkinson's - X and Y-chromosome
    Correct
    Wrong
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Answer : 1. "Down's syndrome - 21st chromosome "

Q:

Which one of the following vitamins is essential for coagulation of blood?

474 0

  • 1
    Vitamin A
    Correct
    Wrong
  • 2
    Vitamin B12
    Correct
    Wrong
  • 3
    Vitamin K
    Correct
    Wrong
  • 4
    Vitamin D
    Correct
    Wrong
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Answer : 3. "Vitamin K"

Q:

Which of the following are also called the amphibians of the plant kingdom? 

472 0

  • 1
    Pteridophytes
    Correct
    Wrong
  • 2
    Thallophytes
    Correct
    Wrong
  • 3
    Angiosperms
    Correct
    Wrong
  • 4
    Bryophytes
    Correct
    Wrong
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Answer : 4. "Bryophytes"

Q:

Which of the following mammalian organisms is not a common source of fibre?

471 0

  • 1
    zebra
    Correct
    Wrong
  • 2
    Embers Goat
    Correct
    Wrong
  • 3
    Llama
    Correct
    Wrong
  • 4
    Alpaca
    Correct
    Wrong
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Answer : 1. "zebra"
Explanation :

Mammals are a common source of fibre.

1. Embers Goat

3. Llama

4. Alpaca

Q:

A/an ______ is any substance that causes your immune system to produce antibodies against it.

471 0

  • 1
    protein
    Correct
    Wrong
  • 2
    glucose
    Correct
    Wrong
  • 3
    platelet
    Correct
    Wrong
  • 4
    antigen
    Correct
    Wrong
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Answer : 4. "antigen"

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