Biology Questions

Q:

Fishes have a ........ chambered heart.

A) Single B) Three
C) Four D) Two
 
Answer & Explanation Answer: D) Two

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Q:

Which one of the following statements regarding haemoglobin is correct?

A) Haemoglobin present in RBC can carry only oxygen but not carbon dioxide B) Haemoglobin of RBC can carry both oxygen and carbon dioxide
C) Haemoglobin of RBC can carry only carbon dioxide D) Haemoglobin is only used for blood clotting and not for carrying gases.
 
Answer & Explanation Answer: B) Haemoglobin of RBC can carry both oxygen and carbon dioxide

Explanation:

During respiration, about 97% of oxygen is transported by Red Blood Cells in blood and the remaining 3% gets dissolved in the plasma.Around 20-25% of carbon dioxide is carried by haemoglobin as carbamino-haemoglobin.

Oxygen enters the blood from the lungs and carbon dioxide is expelled out of the blood into the lungs. The blood serves to transport both gases. Oxygen is carried to the cells. Carbon dioxide is carried away from the cells.

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Q:

Which of the following is induced by Oncogene?

A) Polio B) Cancer
C) Diarrhoea D) Dengue
 
Answer & Explanation Answer: B) Cancer

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Q:

What is the full form of RNA?

A) Ribonucleic Acid B) Ribonitric Acid
C) Ribonutrient Acid D) Reverse Nucleic Acid
 
Answer & Explanation Answer: A) Ribonucleic Acid

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Q:

Which drug is used to cure Glaucoma?

A) Fexofenadine B) Ketoconazole
C) Latanoprost D) Ibuprofen
 
Answer & Explanation Answer: C) Latanoprost

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Q:

__________________ is a drug or substance that makes you feel relaxed and makes your body work and react more slowly.

A) Antidote B) Analgesic
C) Antihistamine D) Depressant
 
Answer & Explanation Answer: D) Depressant

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Q:

In each testes in a male reproductive system, there are ________ compartments called testicular lobules.

A) 150 B) 200
C) 250 D) 300
 
Answer & Explanation Answer: C) 250

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Q:

Deficiency of which of the following causes non-clotting of blood?

A) Vitamin C B) Vitamin K
C) Vitamin E D) Vitamin B12
 
Answer & Explanation Answer: B) Vitamin K

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