

SAT Biology - Respiration
Exam Duration: 45 Mins Total Questions : 30
In respiration, pyruvic acid is
- (a)
formed only when the cell is with mitochondria
- (b)
formed only when oxygen is available
- (c)
formed only when cell is performing aerobic respiration
- (d)
Commonly formed as intermediate product of aerobic and anaerobic respiration
Onegram mole of glucose on complete oxidation to CO2 and H2O produce about
- (a)
686,000 cal
- (b)
6,860 cal
- (c)
6,860,000 cal
- (d)
68,600 cal
What ultimately occurs during respiration?
- (a)
Synthesis ATP
- (b)
Electron transport
- (c)
Breakdown of ATP
- (d)
Capture of solar energy
How many ATPs are produced from NADH2 during aerobic respiration?
- (a)
30
- (b)
8
- (c)
34
- (d)
2
Connection link between EMP pathway &TCA cycle is
- (a)
Pyruvic acid
- (b)
Citric acid
- (c)
Acetyl Co-A
- (d)
Oxalosuccinic acid
In aerobic respiration, the energy in 1 mole of glucose is capable of producing how many ATP molecuels?
- (a)
2 molecules of ATP
- (b)
38 molecules of ATP
- (c)
2 x (6.02 X 1023) molecules of ATP
- (d)
38 x (6.02 x 1023) molecules of ATP
When you hold your breath for half a minute, the carbon dioxide concentration in the blood?
- (a)
increases
- (b)
decreases
- (c)
same
- (d)
neither decrease nor increase
The breathing rate of humans is principally regulated by the concentration of
- (a)
CO2 in the blood
- (b)
Oxygen in the blood
- (c)
Platelets in the blood
- (d)
White blood cells in the blood
Oxygen is carried in man chiefly by the
- (a)
ammonia molecule
- (b)
hydrochloric acid molecule
- (c)
Carbonate ion
- (d)
haemoglobin molecule
Respiration in cockroach is
- (a)
anaerobic
- (b)
with the help of respiratory pigment
- (c)
direct and without respiratory pigment
- (d)
cockroach does not respire
Maintenance of high body temperature helps mammals is carring fast
- (a)
Respiration
- (b)
Reproduction
- (c)
Locomotion
- (d)
Digestion
Out of the total available energy, the percentage of energy conserved as ATP in the anaerobic respiration of glucose comes to
- (a)
40%
- (b)
14.6%
- (c)
60%
- (d)
2%
What is another name for the wind pipe?
- (a)
Lungs
- (b)
Larynx
- (c)
Trachea
- (d)
Oesophagus
Oxygen moves from the lungs into blood stream through _______
- (a)
nerve fibres
- (b)
a large artery in the heart
- (c)
small blood vessels in the lungs
- (d)
A tube in the lungs called the jugular vein
Inner membrane involutions of a mitochondria are called
- (a)
Lamellae
- (b)
Cristae mitochondriales
- (c)
Thylokoid
- (d)
Tubules
In TCA cycle, GTP is formed during conversion of
- (a)
Succinyl Co-A into succinic acid
- (b)
α -Keto glutaric acid to succinyl Co-A.
- (c)
Succinic acid to fumaric acid
- (d)
Both A & B
Process of respiration -in green plants take
- (a)
Only when photosynthesis is in open
- (b)
Only when stomata are open
- (c)
only when photosynthesis cease
- (d)
All the times
Which of the following is not a product of fermentation?
- (a)
CO2
- (b)
O2
- (c)
Ethanol
- (d)
Lactate
What role does O2 play in aerobic respiration?
- (a)
It plays no role
- (b)
It combines with acetyl Co-A at the start of the Krebs cycle
- (c)
It is given off as a by-product during the oxidation of pyruvate
- (d)
It is the final electron acceptor at the end of the electron transport chain
Organisms that do not have the ability to produce or synthesize their own food are called
- (a)
Anaerobic
- (b)
Autotrophs
- (c)
Heterotrophs
- (d)
Aerobes
During what stage of cellular respiration is the most ATP synthesized?
- (a)
Chemiosmosis
- (b)
Glycolysis
- (c)
Kreb's cycle
- (d)
Oxidation of pyruvate
Catabolic process is to
- (a)
make complex molecules from simpler ones
- (b)
break complex molecules into simpler ones
- (c)
occur in autotrophs
- (d)
occur in heterotrophs
ATP formation by glycolysis
- (a)
occurs through aerobic respiration
- (b)
is an entremely efficient method of acquiring energy by the cell
- (c)
requires oxygen
- (d)
involves substrate-level phosphorylation
Which stage of aerobic respiration requires ATP?
- (a)
Glycolysis
- (b)
Electron transport chain
- (c)
Fermentation
- (d)
Kreb's cycle
Colours of light most useful in photosynthesis are
- (a)
Green, yellow and blue
- (b)
Red, violet and blue
- (c)
Infrared, red and yellow
- (d)
Red, white, blue
The pigment molecules responsible for photosynthesis are located in the
- (a)
Mitochondria
- (b)
Cytoplasm of the cell
- (c)
Stroma of the chloroplast
- (d)
Thylakoid membrane of the chloroplast
Both carotenoids and chlorophylls are
- (a)
pigments
- (b)
absorb Photons of all energy ranges
- (c)
contain porphyrin rings
- (d)
all the above
The rate of breathing in humans is controlled mainly by the
- (a)
Medulla
- (b)
Cerebellum
- (c)
Cerebrum
- (d)
Spinal cord
Which blood vessels around the air sac?
- (a)
Arteries
- (b)
Veins
- (c)
Capillaries
- (d)
Lymphatics
Which structure connect the bronchi with the alveoli?
- (a)
air sac
- (b)
tracheoles
- (c)
bronchioles
- (d)
capillaries