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Class 10 Science
Life Processes
Quiz 1
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The enzyme responsible for the digestion of proteins in the small intestine is:
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Pepsin
0%
Trypsin
0%
Amylase
0%
Lipase
Explanation
Trypsin
The part where the exchange of gases occurs during respiration is:
0%
Lungs and larynx
0%
Alveoli and throat
0%
Throat and lungs
0%
Alveoli and capillaries
Explanation
Alveoli and capillaries
The back flow of blood during the pumping of blood by heart is prevented by:
0%
Walls of ventncles
0%
Walls of atrium
0%
Valves in heart
0%
Walls between atria and ventricles
Explanation
Valves in heart
The process of digestion is completed by:
0%
Intestinal juice
0%
trypsin
0%
bile juice
0%
pepsin
Explanation
Intestinal juice
The extracellular fluid released from the capillaries is:
0%
serum
0%
plasma
0%
lymph
0%
mucus
Explanation
lymph
A few drops of iodine solution were added to rice water. The solution turned blue-black in colour. This indicates that rice water contains
0%
complex proteins
0%
simple proteins
0%
fats
0%
starch
Explanation
starch
In which part of the alimentary canal food is finally digested?
0%
Stomach
0%
Mouth cavity
0%
Large intestine
0%
Small intestine
Explanation
Small intestine
When air is blown from mouth into a test-tube containing lime water, the lime water turned milky due to the presence of
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oxygen
0%
carbon dioxide
0%
nitrogen
0%
water vapour
Explanation
carbon dioxide
What prevents backflow of blood inside the heart during contraction?
0%
Valves in heart
0%
Thick muscular walls of ventricles
0%
Thin walls of atria
0%
All of the above
Explanation
Valves in heart
In which of the following vertebrate group/groups, heart does not pump oxygenated blood to different parts of the body?
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Pisces and amphibians
0%
Amphibians and reptiles
0%
Amphibians only
0%
Pisces only
Explanation
Pisces only
Which of the following equations is the summary of photosynthesis?
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6CO
0%
6C
0%
O
0%
None of the above
Explanation
6CO
Which is the first enzyme to mix with food i the digestive tract?
0%
Pepsin
0%
Cellulose
0%
Amylase
0%
Trypsin
Explanation
Amylase
Lack of oxygen in muscles often leads to cramps among cricketers. This results due to
0%
conversion of pyruvate to ethanol
0%
conversion of pyruvate to glucose
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non conversion of glucose to pyruvate
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conversion of pyruvate to lactic acid
Explanation
conversion of pyruvate to lactic acid
Choose the correct path of urine in our body
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kidney → ureter → urethra → urinary bladder
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kidney → urinary bladder → urethra → ureter
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kidney → ureters → urinary bladder → urethra
0%
urinary bladder → kidney → ureter → urethra
Explanation
kidney → ureters → urinary bladder → urethra
In which mode of nutrition an organism derives its food from the body of another living organism without killing it?
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Saprotrophic nutrition
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Parasitic nutrition
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Autotrophic nutrition
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Holozoic nutrition
The filtration units of kidneys are called
0%
nephrons
0%
Ureter
0%
Neurons
0%
Urethra
A gland not associated with the alimentary canal is
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adrenal
0%
salivary glands
0%
pancreas
0%
liver
Choose the event that does not occur in photosynthesis?
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Conversion of light energy to chemical energy
0%
Reduction of carbon dioxide to carbohydrates
0%
Absorption of light energy by chlorophyll
0%
Oxidation of carbon to carbon dioxide
The back flow of blood during the pumping of blood by heart is prevented by:
0%
Valves in heart
0%
Walls of atrium
0%
Walls of ventricles
0%
Walls between atria and ventricles
Trachea do not collapse when there is not much air because they are:
0%
have valves
0%
supported by larynx
0%
having cartilaginous rings
0%
thick and muscular
Choose the form in which most of the plants absorb nitrogen from the atmosphere ?
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atmospheric nitrogen
0%
nitrates and nitrites
0%
amino acids
0%
proteins
Lipase acts on
0%
Carbohydrates
0%
Amino acids
0%
Fats
0%
All of these
Oxygen released during photosynthesis comes from
0%
carbon dioxide
0%
Chlorophyll
0%
water
0%
glucose
A large quantity of one of the following is removed from our body by lungs:
0%
ammonia
0%
FLO only
0%
CO2 only
0%
CO2 and H2O
Which of the following events in the mouth cavity will be affected if salivary amylase is lacking in the saliva?
0%
Proteins breaking down into amino acids
0%
Absorption of vitamins
0%
Fats breaking down into fatty acids and glycerol
0%
Starch breaking down into sugars
What are the products obtained by anaerobic respiration in plants?
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Pyruvate
0%
Lactic acid + Energy
0%
Ethanol + Carbon dioxide + Energy
0%
Carbon dioxide + Water + Energy
Photosynthesis is a
0%
Catabolic process
0%
Parabolic process
0%
Photochemical process
0%
Amphibolic process
Glycolysis process occurs in which part of the cell?
0%
Nucleus
0%
Cytoplasm
0%
Chloroplast
0%
Mitochondria
The part where the exchange of gases occurs during respiration is:
0%
Lungs and larynx
0%
Throat and lungs
0%
Alveoli and capillaries
0%
Alveoli and throat
Name the part of alimentary canal receiving bile from the liver.
0%
Small intestine
0%
Stomach
0%
Large intestine
0%
Oesophagus
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