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CBES Board Class 10 MCQ Quiz Hub
Chemistry BIOCHEMISTRY MCQS
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1. Strand of RNA is made of
ribose sugar
phosphate unit
nitrogen base
all of above
2. Which of the following activates more than 100 different enzymes?
vitamin A
vitamin B
vitamin C
vitamin D
3. Which of the following are obtained from fruits vegetables and cereals?
monosaccharides
sucrose
cellulose
starch
4. Which of the following is not included in fat-soluble vitamins?
vitamin A
vitamin D
vitamin E
vitamin B
5. Which of the following is used to make rectified spirit by fermentation process?
cellulose
starch
glucose
fructose
6. The molecular formula of fructose is
C12H22O11
C18H32O16
C6H12O6
C7H14O7
7. Upon hydrolysis oligosaccharides form
1 to 8 molecules of simple sugars
10 to 12 molecules of simple sugars
5 to 8 molecules of simple sugars
2 to 9 molecules of simple sugars
8. In the human diet all the cholesterol comes from
animal products
vegetable products
minerals
beans
9. The general formula of Monosaccharides is
CnH2n+2
CnH2n+2
CnH2n-2
(CH2o)n
10. The condensed structural formula of
CH3-CH2-CH2-COOH
CH3-(CH2)4-COOH
CH3-(CH2)14-COOH
Palmitic acid is
11. Plants convert glucose (C6H12O6) in to
starch only
cellulose only
sucrose
starch and cellulose
12. How many amino acids are synthesized by our bodies?
10
20
30
40
13. The condensed structural formula of Caproic acid is
CH3-CH2-CH2-COOH
CH3-(CH2)4-COOH
CH3-(CH2)14-COOH
CH3-(CH2)16-COOH
14. Vitamin B is necessary for
eyes and skin
energy production in cells
healing wounds and preventing colds
bones and teeth
15. Starch is an example of?
monosaccharides
oligosaccharides
polysaccharides
lipids
16. Which of the following causes dry skin when taken in excess amount?
vitamin A
vitamin B
vitamin C
vitamin D
17. Deficiency of vitamin A causes
night blindness
anemia and bleeding gums
scurvy
rickets and Osteomalacia
18. Vitamin B is soluble in
fat
water
alcohol
ethers
19. Which of the following is the key to the ability of DNA to store genetic information and to pass it on from generation to generation? double stranded structure of DNA
double stranded structure of DNA
deoxyribose sugar
phosphate unit
nitrogen base
20. Which of the following is obtained by heating bones and tendons in the water?
gelatin
enzyme
amylase
lactase
21. Which of the following is a code that stores information which is used to produce proteins?
structure of the base pairs
order of the base pairs
number of the base pairs
number of hydrogen
22. Deficiency of vitamin D causes
night blindness
anemia and bleeding gums
scurvy
rickets and Osteomalacia
23. Cellulose is obtained from?
animals
microorganisms
plants
bacteria
24. How much energy is provided by 1g of glucose?
156 KJ
168 KJ
20 KJ
12 KJ
25. How many types of vitamins are there?
two
three
four
five
26. The key to the ability of DNA to pass and store genetic information is its double stranded structure
hydrogen bonding
double stranded structure
deoxyribose sugar
nitrogen base
27. In what form is glucose stored in animal muscles and liver cells?
glucagon
vitamins
glycogen
starch
28. Vitamin E is necessary for
eyes and skin
energy production in cells
antioxidant
blood clotting
29. Nucleic acids were first obtained from
blood of infected wounds
pus of infected wounds
skin
muscles
30. Which of the following used the word vitamin for the missing factors that were needed to sustain healthy growth?
C Eijkman
FG Hopkins
Casmir Funk
Jabar Bin Hayan
31. Which of the following is important in vision?
vitamin A
vitamin B
vitamin C
vitamin D
32. Which of the following is true about DNA?
it is present in cell nucleus
it has single strand
it has ribose sugar
it is synthesized by RNA
33. The physical state of fat at room temperature is
solid
liquid
gas
plasma
34. Which of the following protects our heart and kidneys from injury?
skin
muscles
lubricants
fat
35. Which of the following is used as a catalyst in hydrogenation reaction?
Ni
Pd
Pt
all of above
36. Which of the following are glucose and fructose?
monosaccharides
oligosaccharides
polysaccharides
starch
37. When hydrogen is added to an alkene the process is called
dehydration
Dehydrohalogenation
hydrogenation
hydrochlorination
38. Considering the structure of DNA each strand is made up of
deoxyribose sugar
phosphate unit
nitrogen base
all of above
39. Which of the following is necessary for proper bone and tooth growth?
vitamin A
vitamin B
vitamin C
vitamin D
40. Source of caproic acid is
butter
palm oil
beef fat
olive oil
41. The condensed structural formula of Stearic acid is
CH3-CH2-CH2-COOH
CH3-(CH2)4-COOH
CH3-(CH2)14-COOH
CH3-(CH2)16-COOH
42. Starch and cellulose are
crystalline solids
amorphous solids
liquids
gasses
43. When hydrogen is added to vegetable oils they become
saturated and harder
unsaturated and softer
saturated and softer
unsaturated and harder
44. Which of the following should be fed to hens to lower the amount of cholesterol in eggs?
flax seeds
apple seeds
banana seeds
apricot seeds
45. Fructose is an example of
monosaccharides
oligosaccharides
polysaccharides
vitamins
46. In the structure of DNA how many strands are twisted around each other?
one
two
three
four
47. The vitamin which helps in chemical transmission of images from the eye to the brain is
vitamin A
vitamin B
vitamin C
vitamin D
48. Specific organic compounds which are required by our bodies to prevent specific diseases but cannot be produced by our bodies are called
hydrocarbons
carbohydrates
proteins
vitamins
49. Source of butyric acid is
butter
palm oil
beef fat
olive oil
50. Which of the following is used in the form of wood for heat housing and furniture?
cellulose
starch
vitamins
oligosaccharides
51. Raffinose is an example of
monosaccharides
disaccharides
polysaccharides
Trisaccharides
52. Anemia bleeding gums and tongue inflammation is caused by the deficiency of
vitamin A
vitamin B
vitamin C
vitamin D
53. Which of the following is caused due to an extreme lack of proteins?
malaria
typhoid
kwashiorkor
anemia
54. Two fatty acids that are components of fats are
stearic acid and oleic acid
butyric acid and caproic acid
palmitic acid and oleic acid
none of above
55. Existence of RNA is in the form of
single strand
double strand
triple strand
four strands
56. The amino acids which are no synthesized by the human body are called
essential amino acids
non essential amino acids
simple amino acids
complex amino acids
57. Nutrition is derived by cows cattle goats deer sheep and termites from
cellulose
starch
monosaccharides
oligosaccharides
58. Monosaccharides (simple sugars) have
oxidizing nature
reducing nature
redox nature
neutralizing nature
59. Which of the following causes a feeling of pressure inside the head when taken in excess amount?
vitamin A
vitamin B
vitamin C
vitamin D
60. What happens if water-soluble vitamins are taken in excess?
they cause harm
they are readily excreted from the body
they cause no harm
they are not excreted from the body
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