16748.The cycle in which pyruvic acid is broken down in presence of oxygen is known as
Glycolysis
Krebs cycle
Anaerobic respiration
None of the above
16749.The end product of fermentation are
CO2 and O2
CO2 and C2H5OH
O2 and C2H5OH
CO2 and acetaldehyde
16750.Which of the following statements is true about Trachea in a respiratory system?
It functions as passages of air to each alveolus
It functions for sound production
It Acts as passage of air to bronchi
It Lowers the surface tension
16751.Chemiosmotic theory of ATP synthesis in the chloroplasts and mitochondria is based on
Membrane potential
Accumulation of K ions
Proton gradient
Accumulation of Na ions
16753.Due to breakdown and collapse of ______ lung tissue is destroyed.
eustachian tubes
bronchioles
alveoli
microtrachea
16755.Both ATP and Mg2+ are involved in the activity of
Pyruvic Kinase
Hexokinase
Phosphogluco isomerase
PGA dehydrogenase
16756.During pneumonia which of the following gets accumulated in lung tissue?
RBC
Fluid WBC
Blood
Plasma
16757.During swallowing of food, ______ is the opening covered by epiglottis.
trachea
glottis
larynx
epiglottis
16758.The amount of air a person takes in during normal, restful breathing is called the ______.
Dead space
Tidal volume
Vital capacity
Ventilation rate
16759.During which respiration, the respiratory pigment hemoglobin combines with oxygen in the lungs?
Aerobic cellular
External
Internal
Circulatory
16760.Each of the alveolar sac is surrounded by
capillaries
veins
arteries
primarily lymphatic ducts
16761.Enzyme carbonic anhydrase, in ______ speeds up the reaction.
Platelets
Leucocytes
Lymphocytes
RBCs
16763.Exchange of oxygen and carbon dioxide between alveolar air and blood is governed by _______.
diffusion
blood pressure
gravity
active transport
16764.Hamburger's phenomenon is also called
Hydrogen shift
Bicarbonate shift
Chloride shift
Sodium shift
16767.In the human body which concentration is regulated mainly by the kidneys?
bicarbonate
carbaminohemoglobin
deoxyhemoglobin
oxyhemoglobin
16768.In which of the following restrictive lung disease the vital capacity is reduced to below normal levels.
pneumonia
tuberculosis
pulmonary fibrosis
all of the above
16769.Connecting link between glycolysis and Krebs cycle is Before entering Krebs cycle pyruvate is changed to
Oxaloacetate
PEP
Pyruvate
Acetyl CoA
16770.In which one of the following do the two names refer to one and the same things?
Krebs cycle and Calvin cycle
Tricarboxylic acid cycle and citric acid cycle
Tricarboxylic acid cycle and urea cycle
Citric acid cycle and Calvin cycle
16772.Rheumatic fever can cause damage to
Alveoli of the Lungs
heart valves
heart muscles
pleural membranes function
16773.The Medullary Respiratory centre is under
Nervous control
Physical control
Chemical Control
Electric control
16774.The tube that runs from the middle ear to the pharynx
epiglottis
trachea
glottis
auditory tubes
16777.Voice box or ______ is the portion of the respiratory tract which contains the vocal cords for producing sound.
trachea
glottis
larynx
epiglottis
16778.Which one of the followings is the function of Thoracic cavity?
Forms the floor of the thoracic cavity
Encloses the lungs
Contains the respiratory organs
None of these
16779.Bronchi branch into the tubes of smaller diameters (less than 1 mm) known as ______.
Microtrachea
Bronchioles
Alveoli
Eustachian tubes
16780.What is the instrument that measures the amount of air inhaled and exhaled with each breath?
Sphygmomanometer
Hygrometer
Stethoscope
Spirometer
16782.Which one of the following statements is incorrect regarding the pharynx?
Organ of the upper respiratory tract
Connects to the larynx
Contributes to the production of speech
Composed of smooth muscle
16783.Emphysema, a chronic disorder is high in cigarette smokers. In such cases the ______ of the person is/are found damaged.
Plasma membrane
Alveolar walls
Bronchioles
Respiratory muscles
16784.Asthma is due to
Elasticity of lungs is reduced
Degradation of alveolar wall
Bronchioles constrict due to muscle spasms
Damage in diaphragm
16785.What protects the moist membranes of the respiratory tract?
Mucus and cilia
A c shaped cartilage rings
A pebbly epidermal surface
An acidic glands
16786.Number of lobes in both right land left lungs are respectively
three, two
two, three
two, one
three, three
16787.Bulk of carbon dioxide (CO2) released from body tissues into the blood is present as
70% carbaminohemoglobin and 30% as bicarbonate
Carbaminohemoglobin in RBCs
Bicarbonate in blood plasma and RBCs
Free CO2 in blood plasma
16788.Which one of the following is NOT correct?
The nasal cavity warms and humidifies the air before it enters the lungs.
The right lung is composed of three lobes, but the left lung has only two lobes
Lung volumes and vital capacity measure lung function.
The visceral pleura is in direct contact with the chest wall.
16789.The kind of tissue that forms the supportive structure in our Pinna (external ears) is also found in
Tip of the nose
Vertebrae
Nails
Ear ossicles
16790.Which two of the following changes (a–d) usually tend to occur in the plain dwellers when they move to high altitudes (3,500 m or more)?
(a) Increase in red blood cell size
(b) Increase in red blood cell production
(c) Increased breathing rate
(d) Increase in thrombocyte count
Changes occurring are
(a) and (b)
(b) and (c)
(c) and (d)
(a) and (d)
16791.Which one of the following statements is NOT correct about primary bronchi?
The trachea splits into the primary bronchi
Primary bronchi supply air to the right and left lungs
These are lined with stratified squamous epithelium
Supporting cartilage of primary bronchi is plate-like shaped
16792.Opening to the trachea is covered by a small flap of tissues termed as the ______.
Glottis
Trachea
Epiglottis
Larynx
16793.Aerobic respiratory pathway is also termed as ______ pathway.
Anabolic
Catabolic
Creatine phosphate
Amphibolic
16794.Out of the total available energy, the percentage of energy conserved as ATP in the anaerobic respiration of glucose comes to
40%
14.6%
60%
2%
16795.In respiration enregy not converted in ATP is
Liberated along with CO2
Converted into heat
Transferred to organic compounds
Transferred to water
16797.The trachea divides into two smaller tubes called ______.
Bronchi
Trachea
Microtrachea
Eustachian tubes