NEET UG BIOLOGY MCQ: BODY FLUIDS AND CIRCULATION

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A man whose blood group is not known meets with a serious accident and needs blood transfusion immediately. Which one of the blood groups readily available in the hospital will be safe for transfusion?

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Correct option: B

O, Rh

{}^+

Option A (O, Rh

{}^-

) is correct because O negative blood is the universal donor, meaning it can be safely transfused to individuals with any blood type in emergency situations when the recipient's blood type is unknown.

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In ABO blood grouping, person with blood group

{O^ - }

can accept blood from On a beautiful sunny day, a man went for jogging and climbed few stairs in the park. His heart starts beating 95 times per minute. In left ventricle, the volume of blood at the end of ventricular systole is

60 \,\mathrm{~mL}

whereas the volume of blood at the end of ventricular diastole was

140 \,\mathrm{~mL}

. What is the cardiac output in this person? Which area allows the atria to completely empty as the ventricles fill with blood? Serum is Identify the wrong statement with reference to the gene ‘I’ that controls ABO blood groups The action potential is conducted to the ventricles by AVN. Damage to AVN results in