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Body Fluids and Circulation · Question 17

NEET (UG) 2021MCQEasy📈 Topic in 50% papers+4−1
1

Persons with 'AB' blood group are called as "Universal recipients". This is due to :

  1. Absence of antibodies, anti-A and anti-B, in plasma
  2. Absence of antigens A and B on the surface of RBCs
  3. Absence of antigens A and B in plasma
  4. Presence of antibodies, anti-A and anti-B, on RBCs

Answer

(1) Absence of antibodies, anti-A and anti-B, in plasma

Solution

As per NCERT, persons with blood group AB have both antigens A and B on the surface of RBCs, but no antibodies (neither anti-A nor anti-B) in their plasma.

∵ The plasma has no antibody to react with donated RBCs, AB persons can accept blood of any ABO group.

∴ They are called universal recipients.

Answer: (1)

NEET (UG) 2021

Keep practising — Body Fluids and Circulation

2

Which enzyme is responsible for the conversion of inactive fibrinogens to fibrins?

  1. Thrombokinase
  2. Thrombin
  3. Renin
  4. Epinephrine
NEET (UG) 2021
3

Match the following columns and select the correct option.

  1. (a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)
  2. (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
  3. (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
  4. (a)-(ii), (b)-(i), (c)-(iii), (d)-(iv)
NEET (UG) 2020
4

The QRS complex in a standard ECG represents

  1. Repolarisation of ventricles
  2. Repolarisation of auricles
  3. Depolarisation of auricles
  4. Depolarisation of ventricles
NEET (UG) 2020
5

Match the Column-I with Column-II : Select the correct option.

  1. (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
  2. (a)-(iv), (b)-(i), (c)-(ii), (d)-(v)
  3. (a)-(ii), (b)-(i), (c)-(v), (d)-(iii)
  4. (a)-(ii), (b)-(iii), (c)-(v), (d)-(iv)
NEET (UG) 2019
6

What would be the heart rate of a person if the cardiac output is 5 L, blood volume in the ventricles at the end of diastole is 100 mL and at the end of ventricular systole is 50 mL?

  1. 100 beats per minute
  2. 125 beats per minute
  3. 50 beats per minute
  4. 75 beats per minute
NEET (UG) 2019
7

Match the items given in column I with those in column II and select the correct option given below.

  1. (a)-(i), (b)-(ii), (c)-(iii)
  2. (a)-(iii), (b)-(i), (c)-(ii)
  3. (a)-(i), (b)-(iii), (c)-(ii)
  4. (a)-(ii), (b)-(i), (c)-(iii)
NEET 2018
8

Match the items given in column I with those in column II and select the correct option given below.

  1. (a)-(i), (b)-(iii), (c)-(ii)
  2. (a)-(iii), (b)-(ii), (c)-(i)
  3. (a)-(ii), (b)-(iii), (c)-(i)
  4. (a)-(i), (b)-(ii), (c)-(iii)
NEET 2018
9

Adult human RBCs are enucleate. Which of the following statement(s) is/are most appropriate explanation for this feature?

  1. A only
  2. A, C and D only
  3. B and C only
  4. D only
NEET 2017
10

The hepatic portal vein drains blood to liver from

  1. stomach
  2. kidneys
  3. intestine
  4. heart.
NEET 2017
11

Blood pressure in the pulmonary artery is

  1. more than that in the pulmonary vein
  2. less than that in the venae cavae
  3. same as that in the aorta
  4. more than that in the carotid.
NEET 2016 (Phase 1)

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