Breathing And Exchange Of Gases Test

Breathing And Exchange Of Gases

This is Breathing And Exchange Of Gases Test-03 for CBSE class 11 Biology.. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
Which of the following is not correctly matched :
  • A
    Respiration = physicochemical process
  • B
    TLC = VC + RV
  • C
    Cutaneous respiration = breathing via skin
  • D
    Inspired air = Alveolar air
    Correct
2
Read the following statements : i. Every 100 ml of deoxygenated blood delivers about 4 ml of \( C{O_2}\) to the alveoli. ii. 30% - 40% of \( C{O_2}\) is transported to the alveoli as carbamino-haemoglobin. iii. At respiratory surface \( C{O_2}\) diffuses from venous blood into alveolar spaces.
  • A
    onlyi) and ii) are correct.
  • B
    only iii) is the correct statement.
  • C
    onlyi) and iii) are correct.
    Correct
  • D
    all are correct.
3
The condition favourable for dissociation of oxygen from oxyhaemoglobin in the tissues is
  • A
    Low \(p{O_2}\), high \(pC{O_2}\), low \({H^ + }\) concentration and higher temperature
  • B
    Low\(p{O_2}\) , high \(pC{O_2}\), high \({H^ + }\) concentration and higher temperature
    Correct
  • C
    High \(p{O_2}\), low \(pC{O_2}\), low \({H^ + }\) concentration and lower temperature
  • D
    High \(p{O_2}\), low \(pC{O_2}\), high \({H^ + }\) concentration and lower temperature
4
The solubility of carbon dioxide is
  • A
    20 – 25 times higher than that of oxygen
    Correct
  • B
    10 – 15 times higher than that of oxygen
  • C
    10 – 15 times lower than that of oxygen
  • D
    20 – 25 times lower than that of oxygen
5
The major factor which affect binding related to the partial pressure of carbon dioxide is
  • A
    \(pC{O_2}\)
  • B
    \(p{O_2}\)
    Correct
  • C
    \({O_2}\)
  • D
    \(C{O_2}\)
6
70% of carbondioxide is transportedas bicarbonate by the enzyme
  • A
    Carbonates
  • B
    Carbaminase
  • C
    Carbonic hydrase
  • D
    Carbonic anhydrase
    Correct
7
The regulatory centres for respiration are located in :
  • A
    pons & cerebellum
  • B
    medulla oblongata & pons
    Correct
  • C
    Diencephalon and pons
  • D
    cerebellum and medulla oblongata
8
In CNS, regulation of respiratory rhythm during normal breathing is largely dependent upon :
  • A
    oxygen concentration
  • B
    oxyhemoglobin concentration
  • C
    carbon dioxide concentration
    Correct
  • D
    RBCs in the body
9
Name the unlabelled parts of given flow chart :
Question 9 figure 1
  • A
    oxygen, inspiratory centre and expiratory centre
  • B
    carbondioxide, pneumotoxiccentre and spinal cord
  • C
    carbondioxide, inspiratory centre and diaphragm
  • D
    stretch, expiratory centre and inspiratory centre
    Correct
10
The specialized centre which can reduce the inspiratory duration upon stimulation is
  • A
    Pneumotaxiccentre
    Correct
  • B
    Chemosensitivecentre
  • C
    Apneusticcentre
  • D
    Medullary inspiratory centre
11
Loud snoring and labored breathing are symptoms of :
  • A
    peripheral sleep apnea
  • B
    obstructive sleep apnea
    Correct
  • C
    central sleep apnea
  • D
    bronchitis
12
A film of _____ lines lung alveoli that lowers _____ of the alveoli and makes breathing _____ :
  • A
    Cuticle, inflating, difficult.
  • B
    Lecithin, surface tension, easier.
    Correct
  • C
    Pleuron, surface tension, easier.
  • D
    Cuticle, bacterial inflammation, difficult.
13
Habit of Cigarette smoking can lead to :
  • A
    emphysema
  • B
    loss of cilia lining the respiratory tract
  • C
    all of the following
    Correct
  • D
    coughing
14
Read the following : i. During chloride shift , the chloride ions diffuse from RBC’s into the blood plasma. ii. Chloride shift, helps to maintain ionic balance and chemical neutrality. iii. Chloride shift occurs during transport of \( C{O_2}\) .
  • A
    only statement iii) is correct.
  • B
    all statements are correct.
  • C
    only statement ii) and iii) are correct.
    Correct
  • D
    only statement i) and ii) are correct.
15
Insect of family chironomidae eg..chironomous larvae are also known as bloodworms since :
  • A
    they contain haemocyanin as their respiratory pigment
  • B
    they are blood parasites
  • C
    both A & B
  • D
    they contain haemoglobin as their respiratory pigment
    Correct