Lack of oxygen in muscles often leads to cramps among cricketers. This results due to (a) conversion of pyruvate to ethanol (b) conversion of pyruvate to glucose (c) non conversion of glucose to pyruvate (d) conversion of pyruvate to lactic
(d) conversion of pyruvate to lactic acid
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banana
Go to last place!
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rocket
Go to first place!
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fairy
Take points!
5
10
15
20
25
lifesaver
Give 5 points!
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5
A few drops of iodine solution were added to rice water. The solution turned blue-black in colour. This indicates that rice water contains (a) complex proteins (b) simple proteins (c) fats (d) starch
In which of the following vertebrate group/groups, heart does not pump oxygenated blood to different parts of the body? (a) Pisces and amphibians (b) Amphibians and reptiles (c) Amphibians only (d) Pisces only
(d) Pisces only
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5
Fishes have a heart with âĶâĶâĶâĶâĶ chambers while the amphibians have âĶâĶâĶâĶâĶ chambers in their heart.
2, 3
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5
The part where the exchange of gases occurs during respiration is: (a) Lungs and larynx (b) Alveoli and throat (c) Throat and lungs (d) Alveoli and capillaries
(d) Alveoli and capillaries
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5
Which of the following equations is the summary of photosynthesis? (a) 6CO2 + 12H2O â C6H12O6 + 6O2 + 6H2O (b) 6CO2 + H2O + Sunlight â C6H12O6 + O2 + 6H2O (c) 6CO2 + 12H2O + Chlorophyll + Sunlight â C6H12O6 + 6O2 + 6H2O (d) 6CO2 + 12H2O + C
Plants store most of their wastes in the membrane bound structures called âĶâĶâĶâĶâĶ present in their cells.
Vacuoles
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5
When air is blown from mouth into a test-tube containing lime water, the lime water turned milky due to the presence of (a) oxygen (b) carbon dioxide (c) nitrogen (d) water vapour
(b) carbon dioxide
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5
The tubular parts of the nephron selectively âĶâĶâĶâĶâĶ the substances needed by the body.
reabsorbs
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5
The process of digestion is completed by: (a) Intestinal juice (b) trypsin (c) bile juice (d) pepsin
(a) Intestinal juice
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5
Artificial kidney is a device which carries out âĶâĶâĶâĶâĶ to remove nitrogenous waste products from the blood.
Dialysis
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5
Which is the first enzyme to mix with food i the digestive tract? (a) Pepsin (b) Cellulose (c) Amylase (d) Trypsin