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Worksheetschemical reactions in living organisms
Total questions: 15
Worksheet time: 15mins
The pepsin enzyme can be added to the tube number …… to digest its contents.
1
2
3
4
Tube number 1 is similar to ………. In the digestive system of human.
Stomach
small intestine
esophagus
the mouth
If pepsin enzyme was added to the tube number 4, proteins will not be digested because:
insuitability of pH
insuitability of temperature
pepsin does not digest proteins
all the previous
If the temperature of tube 3 is adjusted, what is the enzyme that can be added to digest starch?
Pepsin
Amylase
Trypsin
Maltase
We can make sure that, tube number 1 contains proteins by adding ………….. .
Benedict̕ reagent
iodine solution
Sudan-4 reagent
Biuret̕ s reagent
If Sudan-4 reagent is added to the tube number 2, it gives ………….. colour.
dark blue
red
viloet
orange
The structures A and B are ………………. .
monosaccharides
disaccharides
polysaccharides
amino acids
One of A or B should be ………….. .
Fructose
ribose
galactose
glucose
If the disaccharide (2) is maltose, A and B should be ………….. .
glucose and glucose
glucose and fructose
glucose and galactose
If the disaccharide (2) is found in the milk, A and B should be ………….. .
glucose and fructose
glucose and glucose
glucose and galactose
Most enzymes work more active at temperature ............. oC
25
37
45
60
Most enzymes work at hydrogen potential equals
3.4
5.4
7.4
9.4
If you know that the pepsin enzyme helps in the digestion of proteins in stomach. which of the following graphs illustrates what happens to the pepsin enzyme if PH value increased in the stomach.
From the forms of the anabolic process inside the living organisms is the
oxidation
decay
polymerization
digestion
All the following statements are correct except that
all proteins are enzymes
all enzymes are proteins
all enzymes contain peptide bonds
all proteins contain nitrogen element
