Tissue respiration is a process by which
carbohydrates are synthesised
proteins are broken down
fat molecules are metabolised
energy is liberated
Correct Answer :
D. energy is liberated
Related Questions
Oxygen will diffuse through a membrane only if it is
moist
immersed in water
very thin
vascular
Among the following, the maximum amount of usable energy is released per-molecule of glucose by
yeast cell in fermentation
a liver cell in glycolysis
an Amoeba in aerobic respiration
a muscle cell in lactic acid formation
The capacity of lungs for air in a healthy man is about
500 ml
1000 ml
2000 ml
3000 ml
The oxygen pressure in the alveolar air is
less than that is lung capillaries
equal to that in lung capillaries
double of that in lung capillaries
half of that in lung capillaries
All are lung diseases except
asthma
pericarditis
bronchitis
pneumonia
The respiratory portion of the respiratory tract consists of
Pharynx, larynx, trachea, bronchi and bronchioles
Trachea, bronchi, bronchioles, alveolar ducts and alveoli
Respiratory bronchioles, alveola ducts, alveolar sacs and alveoli
Bronchi, bronchioles, alveolar ducts, alveolar sacs and alveoli
In all vertebrates, the oxygen transport is through
haemocyanin
haemoglobin
myoglobin
haemoerythrin
Air directly enters the tracheae via the
external nares
pharynx
larynx
bronchi
The medullary inspiratory centre is always under direct control of
chemicals
physical conditions
nerves
all of these
Colour of oxyhaemoglobin is
dull red
bluish red
bright red
dull brown
The opening into the wind pipe or trachea is called
larynx
epiglottis
glottis
bronchi
The functional unit of the lung is
neuron
alveolus
bronchus
none of these
The impulses reaching voluntary muscles for forced breathing originate from
medulla oblongata
spinal cord
vagus nerve
cerebrum
The iron containing haemoglobin pigment is a
protein
polysaccharide
enzyme
none of these
The membrane covering the lungs is
conjunctiva
pleura
meninges
peritoneum
During inspiration in mammals, the diaphragm shall
Contract
relax
expand
shows no change
Anoxia means
absence of oxygen
diminished amount of oxygen delivered to the tissues
both (a) and (b)
none of these
The substances undergoing slow oxidation in the body during respiration are known as
Oxidases
Metabolites
ATP
ADP
The regulatory centre for respiration is situated in the
cerebral cortex
hypothalamus
medulla oblongata
procencephalon
In response to high altitude hypoxia supply of oxygen to the tissue is maintained by
increased alveolar ventilation and increased cardiac output
shift in the haemoglobin dissociation curve to the right
increased erythrocytes and haemoglobin content of blood
all of these
In frog, the alveoli are surrounded by
flattened and ciliated cells to increase the surface area of lungs
columnar and ciliated cells to increase the surface area of lungs
only ciliated cells to increase the surface area of lungs
only squamous cells to decrease the surface area of lungs
In rabbits, respiration takes place in
Cells lining the lung cavities
Cells found in blood
All living cells of the body
RBC only
The "mountain sickness" in persons climbing to high attitudes without the aid of oxygen cylinders is due to
lack of sufficient amount of haemoglobin
lack of sufficient amount of erythrocytes
arterial hypoxia
anaemic hypoxia
The carbon dioxide pressure in the lung capillaries is
less than that in alveolar air
more than that in alveolar air
equal to that in alveolar air
similar to oxygen pressure in the capillaries
In a man at rest the body's cells consume approximately
5000 ml of oxygen per day
5000 ml of oxygen per hour
500 ml of oxygen per hour
200 ml of oxygen per minute
Internal respiration refers to
exchange of gases between lungs and blood
cellular respiration
exchange of gases between lungs and atmosphere
respiration in open air
The term used to denote the difference in volume between the total lung capacity and the vital capacity is
tidal volume
ventilation rate
residual volume
all of these
The respiratory tubes devoid of car-tilagenous rings are
trachea
bronchi
bronchioles
none of these
Oxygen is transported to every cell of the body through
RBC
WBC
Both (a) and (b)
RBC and hormones
The condition in which the body suffers from acute oxygen shortage is called
anaemia
deoxygenation
detoxification
hypoxia