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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:   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.

Subject: Biology
Exam Prep: Bank Exams
Q:

Animals in which the cells are arranged in two embryonic layers are called ________.

A) Diploblastic B) Extoderm
C) Tripoblastic D) Endoderm
 
Answer & Explanation Answer: A) Diploblastic

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Q:

The female sex organs in a flower is the __________.

A) Zoospores B) stamen
C) pistil D) Chlorophyceae
 
Answer & Explanation Answer: C) pistil

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0 19
Q:

A healthy adult man has, on an average, ________ (in millions) of RBCs mm-3 of blood.

A) 5 - 5.5 B) 4 - 4.5
C) 3 - 3.5 D) 6 - 6.5
 
Answer & Explanation Answer: A) 5 - 5.5

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Q:

Muscles get tired when there is shortfall of ___________.

A) Lactic acid B) Na+ ions
C) ATP D) Sulphates
 
Answer & Explanation Answer: C) ATP

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Q:

Carica papaya is the scientific name of ___________.

A) Peepal B) Papaya
C) Tamarind D) Drumstick
 
Answer & Explanation Answer: B) Papaya

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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:

Psidium guajava is the scientific name of ___________.

A) Guava B) Mango
C) Bamboo D) Jack fruit
 
Answer & Explanation Answer: A) Guava

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Q:

Which organ does detoxification and produces chemicals needed for digestion?

A) Salivary glands B) Pancreas
C) Thyroid gland D) Liver
 
Answer & Explanation Answer: D) Liver

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