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Q:

Which organ has finger like outgrowths which are called as Villi (Singular Villus)?

A) Large Intestine B) Bladder
C) Small Intestine D) Stomach
 
Answer & Explanation Answer: C) Small Intestine

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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 disease is caused by female Anopheles mosquito?

A) Chicken Pox B) Malaria
C) Black Fever D) Cholera
 
Answer & Explanation Answer: C) Black Fever

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Q:

Which of the following vitamins are water soluble?

A) Vit. A & Vit. B B) Vit. B & Vit. C
C) Vit. C & Vit. D D) Vit. A & Vit. K
 
Answer & Explanation Answer: B) Vit. B & Vit. C

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Q:

Plant tissues are of how many types?

A) 3 B) 2
C) 5 D) 6
 
Answer & Explanation Answer: A) 3

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3 686
Q:

Nephron is related to which of the following system of human body?

A) Circulatory system B) Excretory system
C) Reproductive system D) Respiratory system
 
Answer & Explanation Answer: B) Excretory system

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Q:

Which organ gets affected in Weil's disease?

A) Liver B) Lungs
C) Heart D) Kidney
 
Answer & Explanation Answer: D) Kidney

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Q:

In human body, the cell growth and differentiation are highly controlled and regulated, but in cancer cells

A) there is breakdown of these regulatory mechanisms leading to formation of benign and malignant tumors B) controlled cell divisionand over-production of genetic material occur  
C) RNA is mutated and produced in less amount D) DNA is mutated and produced in less amount
 
Answer & Explanation Answer: A) there is breakdown of these regulatory mechanisms leading to formation of benign and malignant tumors

Explanation:

In cancer cells, there is breakdown of these regulatory mechanisms. Normal cells show a property called contact inhibition by virtue of which contact with other cells inhibits their uncontrolled growth. Cancer cells appears to have lost this property. As a result of this, cancerous cells just continue to divide giving rise to masses of cells called tumors. Tumors are of two types: benign and malignant.

 

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