Breathing and Exchange of Gases - Online Test

Q1. Loud snoring and labored breathing are symptoms of :
Answer : Option B
Explaination / Solution:

Loud snoring and labored breathing are the symptoms of obstructive sleep apnea. Obstructive sleep apnea is a sleep disorder in which breathing is briefly and repeatedly interrupted.

Q2. A film of _____ lines lung alveoli that lowers _____ of the alveoli and makes breathing _____ :
Answer : Option D
Explaination / Solution:

A thin film of lecithin lines lung alveoli that lowers surface tension of the alveoli and makes breathing easier. The lining also reduces the friction of alveoli to avoid its damage.

Q3. Habit of Cigarette smoking can lead to :
Answer : Option A
Explaination / Solution:

The habit of Cigarette smoking can lead to coughing, emphysema and loss of cilia lining the respiratory tract. It contain nicotine that breaks the wall of alveoli to reduce respiratory surface.

Q4. 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 .
Answer : Option C
Explaination / Solution:

Chloride shift is a process which occurs in a cardiovascular system and refers to the exchange of bicarbonate and chloride across the membrane of red blood cells. Chloride shift helps to maintain ionic balance and chemical neutrality.

Q5. Insect of family chironomidae eg..chironomous larvae are also known as bloodworms since :
Answer : Option A
Explaination / Solution:

Insects of family Chironomidae eg. Chironomous commonly known as the harlequin fly, is a species of non-biting midge. Their larvae are known by the common name of blood worm due to their red colouration. Red colouration is because they contain haemoglobin as their respiratory pigment.