Biological Molecules MCQs Chapter 2
Biological molecules MCQs are here – Biological molecules are essential components of living organisms and their study is a crucial aspect of the Class 11 biology curriculum of Sindh textbook board Jamshoro. To test their understanding of this topic, students are often asked to answer multiple-choice questions (MCQs) related to biological molecules. These Biological MCQs may cover a wide range of topics, including the structure, function, and properties of carbohydrates, lipids, proteins, and nucleic acids. By mastering the concepts related to biological molecules through Multiple choice questions, students can gain a deeper understanding of the role of these molecules in living systems. In addition to biological molecules MCQs, students studying biology may also encounter a wide range of MCQs covering other topics in the subject.
These biology MCQs can cover topics such as cell structure and function, genetics, evolution, ecology, and many others. MCQs are a popular method of testing student understanding as they require critical thinking skills and the ability to apply concepts to different scenarios. By practicing biology MCQs, students can improve their understanding of the subject and prepare themselves for exams and assessments. Biological molecules MCQs are a critical topic in the Class 11 biology curriculum of the Sindh board, and students are expected to have a solid understanding of their structure, function, and properties. In chapter 2 of class 11, students will learn about the four main classes of biological molecules: carbohydrates, lipids, proteins, and nucleic acids. Students will also explore the roles of these molecules in living organisms, such as energy storage, structural support, and information transfer. Bio MCQs related to biological molecules class 11 can help students to assess their understanding of this topic and prepare themselves for exams and assessments. By mastering the concepts associated with biological molecules class 11, students can build a solid foundation for future studies in biology and related fields.
There are 100 multiple-choice questions in Biological Molecules MCQs Chapter 2 class 11 of Sindh textbook board Jamshoro. These Biology MCQs are most important for medical students and also these MDCAT MCQs are helpful for all types of tests.
Biological Molecules MCQs Let’s Get Started
1. What are biological molecules?
A. Molecules that are essential for life
B. Molecules that are formed by living organisms
C. Molecules that are important for life
D. All of these
2. Choose a molecule that is not an example of a biological molecule?
A. Glucose
B. Proteins
C. H2SO4
D. Lipids
3. Branch of biology which deals with the study of biomolecules is known as?
A. Biochemistry
B. Molecular biology
C. Biochemical science
D. Both a and b
4. Choose the statement which is the best explanation of biochemistry?
A. Study of essential molecules for life
B. Study of biomolecules
C. Study of proteins, lipids, sugar, etc
D. All of these
5. All of the following are advantages of biochemistry except?
A. Tells us about various chemical processes of life
B. Made mechanism of various biological diseases clear
C. Allows us to synthesize various biomolecules in labs by studying their structure
D. None of these
6. What do you mean by biochemicals?
A. Chemicals which are made up in labs
B. Chemicals which are synthesized in the living body
C. Chemicals found naturally in water
D. All of these
7. Regarding chemical compositions of protoplasm?
A. Water is the most abundant molecule.
B. Proteins are the most abundant organic molecules
C. Lipids and sugar are also present.
D. All of these
8. Why chemical composition of protoplasm is not exactly known yet?
A. Because it dies when exposed to various chemical reactions
B. Because no one tries to find it out yet
C. Because there is a variable chemical composition in different parts of the body
D. All of these
9. All living organisms are composed of _____ main elements.
A. Four
B. Five
C. Six
D. Seven
10. Choose the molecule which is the most important biomolecule?
A. Proteins
B. Water
C. Lipids
D. Carbohydrates
11. Which of the following is the most important inorganic molecule for life?
A. Water
B. Carbon dioxide
C. Calcium phosphate
D. Calcium carbonate
12. Concentration of water is _____ in a cell?
A. 70%
B. 80%
C. 90%
D. 65 – 95%
13. Water is a dipolar molecule, what are dipolar molecules?
A. Molecule has two poles
B. Molecules has two charges
C. Molecules which is polar in nature
D. All of these
14. Which one is not a property of water molecules?
A. Low specific heat capacity
B. High heat of vaporization
C. Have adhesion and cohesion forces
D. Act as a buffer
15. Why water is a polar molecule?
A. Because contain +ve charge only
B. Because contain -ve charge only
C. Because contains both charges
D. All of these
16. Why water is known as a universal solvent?
A. Because it is an amphoteric molecule
B. Because it is a polar molecule
C. Because it is a buffer
D. Because it has adhesive and cohesive forces
17. What Water molecule has high heat capacity?
A. Due to a positive charge
B. Due to a negative charge
C. Due to hydrogen bonding
D. Due to the release of hydrogen ions
18. Which of the following has the highest heat capacity?
A. Water
B. Honey
C. Milk
D. Fruit juice
19. What is the heat of vaporization?
A. Amount of heat required to make ice from liquid water
B. Amount of heat required to vapourize a substance
C. Amount of heat required to increase the temperature by a single degree
D. All of these
20. Molecules that resist the change in pH are known as?
A. Amphoteric molecules
B. Buffers
C. Dipolar molecules
D. Polar molecules
21. Why do water molecules act as buffers?
A. Because it can release hydrogen ions
B. Because it can release hydronium ions
C. Both of these
D. None of these
22. What are amphoteric molecules?
A. which can release hydrogen ions
B. Which can release hydronium ions
C. Both of these
D. None of these
23. The property of a water molecule that allows it to fill the capillary vessel is called.
A. Adhesion
B. Cohesion
C. Both of these
D. None of these
24. Why water is essential for life?
A. It quenches the thirst
B. It reduces irritability
C. It is a metabolic medium in the body
D. All of these
25. The process in which large molecules are synthesized by small molecules with the removal of water is called.
A. Hydrolysis
B. Isomerisation
C. Condensation
D. Oxidation
26. What are monomers?
A. Building block of macromers
B. Building block of megamers
C. Join to form large molecules
D. Both b and c
27. Monomers join to form?
A. Large molecules
B. Megamers
C. Polymers
D. All of these
28. _________ is the reverse of condensation?
A. Hydrolysis
B. Isomerisation
C. Polymers
D. Oxidation
29. Which one of the following is the most important organic molecule for life?
A. Protein
B. Water
C. Lipids
D. Carbohydrates
30. Name protein was given by?
A. Bloor
B. Altman
C. Berzelius
D. Golgi
31. What does protein means?
A. 1st
B. 2nd
C. 3rd
D. 4th
32. Which one of the following are basic elements of protein molecules?
A. Carbon
B. Hydrogen
C. Oxygen
D. Nitrogen
D. All of these
33. Sometimes protein also contains_____ and_____ in addition to C, H, N, and O.
A. Zinc and phosphorus
B. Sulfur and phosphorus
C. Iron, copper
D. Chlorine, bromine
34. Name the building blocks of protein molecules?
A. Fatty acids
B. Amino Acids
C. Nucleic acid
D. Glycerol
35. Amino acids are named because they contain?
A. Acid group
B. Amino group
C. Both of these
D. None of these
36. Amino acids are joined together by ____ bonds?
A. Glycosidic
B. Ester
C. Peptide
D. None of these
37. There are _____ basic structures of protein molecules?
A. One
B. Two
C. Three
D. Four
38. Name the biologically important properties of water?
A. Have adhesion and cohesion forces
B. Water is an amphoteric molecule
C. Act as a buffer
D. All of these
39. Which property of the water makes as a universal solvent?
A. Because it is an amphoteric molecule
B. Because it is a polar molecule
C. Because it is a buffer
D. Because it has adhesive and cohesive forces
40. The structure of a protein molecule in which amino acids are arranged in form of a zigzag chain is called.
A. Primary structure
B. Secondary structure
C. Tertiary structure
D. Quaternary structure
41. All amino acids are arranged in all three axes to form.
A. Primary structure
B. Secondary structure
C. Tertiary structure
D. Quaternary structure
42. The structure of the protein that contains amino acids arranged in a straight chain is called?
A. Primary structure
B. Secondary structure
C. Tertiary structure
D. Quaternary structure
43. Which of the following is not a function of protein?
A. forms protection cover
B. Provide energy
C. As a defensive organs
D. All of these
44. Body depends mainly on ___ to fulfill their function
A. Protein
B. Water
C. Lipids
D. Carbohydrates
45. Regarding carbohydrates?
A. Organic compounds
B. Provide energy
C. Sugars
D. All of these
46. What is the meaning of carbohydrates?
A. Carbon and water
B. Carbon dioxide and water
C. Water and carbonate
D. None of these
47. Carbohydrates are divided into ____ major classes?
A. one
B. Two
C. Three
D. Four
48. What is an enzyme?
A. Protein
B. Lipid
C. Sugars
D. None of these
49. Type of carbohydrate which cannot be further hydrolyzed is known as a?
A. Monosaccharides
B. Disaccharide
C. Oligosaccharides
D. None of these
50. Which one of the following is monosaccharide?
A. Sucrose
B. Galactose
C. Maltose
D. Lactose
51. Monosaccharides are combined together to form?
A. Oligosaccharides
B. Disaccharides
C. Polysaccharides
D. All of these
52. Monosaccharides contain at least _____ a number of carbon atoms.
A. Three
B. Five
C. Four
D. Seven
53. The linkage between carbohydrates is called.
A. Glycosidic
B. Ester
C. Ester
C. All of these
54. Number of non-essential acids?
A. 20
B. 10
C. 13
D. 23
55. Which one of the following is the most famous oligosaccharide?
A. Monosaccharides
B. Disaccharides
C. Oligosaccharides
D. Polysaccharides
56. Find out the physical properties which are common for both mono and oligosaccharides?
A. Sweet taste
B. Soluble in water
C. White crystalline solids
D. All of these
57. Most abundant protein?
A. Rubisco
B. Fibrinogen
C. Myosin
D. All of these
58. _____ is the most abundant organic molecule in nature?
A. Starch
B. Cellulose
C. Glycogen
D. Chitin
59. Name the compound which is also known as animal starch?
A. starch
B. Cellulose
C. Glycogen
D. Chitin
60. Cellulose contain______ while starch contain ________ types of glucose chains?
A. One, two
B. Two, three
C. Three, one
D. Four, many
61. Which type of polysaccharides are stored in the cells of animals?
A. Starch
B. Cellulose
C. Glycogen
D. Chitin
62. Regarding starch?
A. Stored food of plants
B. Having amylose and amylopectin
C. Found in roots and underground parts
D. All of these
63. Find the odd one regarding carbohydrates?
A. Provide energy
B. Act as stored food
C. Work as a building material
D. None of these
64. Organic molecules which are insoluble in water and soluble in organic solvents are known as
A. Protein
B. Water
C. Lipids
D. Carbohydrates
65. The term lipid was 1st used by?
A. Bloor
B. Altman
C. Berzelius
D. Golgi
66. Lipids are divided into _____ main classes
A. One
B. Two
C. Three
D. Four
67. Which one is odd?
A. Protein
B. Water
C. Carbohydrates
D. Lipid
68. Most common carbohydrates are?
A. Monosaccharides
B. Disaccharides
C. Oligosaccharides
D. Polysaccharides
69. Acylglycerols are divided into?
A. One type
B. Two types
C. Three types
D. Four types
70. Regarding saturated acylglycerols
A. Solid at room temperature
B. Commonly known as fats
C. Contain double or triple bonds
D. All of these
71. Regarding unsaturated acylglycerol
A. Liquid at room temperature
B. Commonly known as oils
C. Contain double or triple bonds
D. All of these
72. What are waxes?
A. Types of lipids
B. Types of biomolecules
C. Found in different organisms
D. All of these
73. Which class of lipids is the most important type of biological lipids?
A. Acylglycerols
B. Waxes
C. Phospholipids
D. Terpenoids
74. In phospholipids one molecule of fatty acids is replaced by?
A. Nitrogen
B. Phosphate group
C. Phosphoric acid
D. None of these
75. Phospholipids are chiefly found in.
A. Cell wall
B. Cytoplasm
C. Plasma membrane
D. Nucleus
76. Regarding terpenoids?
A. Types of lipids
B. Contain isoprenoid
C. Both of these
D. None of these
77. Which one of the following is the most important terpenoid?
A. Terpenes
B. Steroids
C. Carotenoids
D. All of these
78. Testosterone and estrogen are belongs to which class of lipid?
A. Terpenes
B. Steroids
C. Carotenoids
D. All of these
79. Nucleic acids were discovered by?
A. Bloor
B. Friedrich
C. Berzelius
D. Golgi
80. Nucleic acids are found in?
A. Cytoplasm
B. Nucleus
C. Cell membrane
D. Both a and b
81. ______ is a building block of nucleic acid?
A. Fatty acids
B. Amino acids
C. Nucleotide
D. Glycerol
82. Nucleotides are formed by?
A. Pentose sugar
B. Nitrogen base
C. Phosphate group
D. All of these
83. Nucleic acids are of ________ types?
A. One type
B. Two type
C. Three types
D. Four types
84. Type of nucleic acid contains ribose sugar and uracil as nitrogen base is known as?
A. DNA
B. RNA
C. Both of these
D. None of them
85. Regarding DNA?
A. Hereditary material of most living
B. Contact thymine
C. Contain deoxyribose sugar
D. All of these
86. Which nucleic acid act as hereditary material in a living organism?
A. DNA
B. RNA
C. Both of these
D. None of these
87. How many types of pentose sugar are Found in nucleic Acids?
A. One
B. Two answer
C. Three
D. Four types
88. Nitrogen basis is divided into two main types _____ and _______.
A. Purines and purinides
B. Pyrimidine and parlins
C. Purine and pyrimidine
D. All of these
89. Which one of the following is an important nucleotide?
A. NAD
B. ATP
C. NADP
D. DNA
90. NAD is an example of a?
A. Mononucleotide
B. Dinucleotide
C. Polynucleotide
D. All of these
91. Most vitamins are?
A. Protein
B. Catalyst
C. Organic
D. All of these
92. ________ will be formed when glucose is combined with lipids?
A. Glycoprotein
B. Glycolipids
C. Proteoglycans
D. Mucoids
93. Cerebrosides are an example of?
A. Glycoprotein
B. Glycolipids
C. Proteoglycans
D. Mucoids
94. What are mucoids?
A. Glucose with lipids
B. Lipids with proteins
C. Glucose with proteins
D. All of these
95. Nucleoproteins are molecules that are formed by?
A. Glucose combine with lipids
B. Lipids Combine with proteins
C. Nucleic acid combines with proteins
D. All of these
96. Lipoproteins are conjugate of?
A. Glucose combine with lipids
B. Lipids Combine with proteins
C. Nucleic combine with proteins
D. All of these
97. Which one of the following is a function of lipoproteins?
A. Transport lipids in the blood
B. Found in the membrane of proteins
C. Both of these
D. None of these
98. Name the following which is not the type of glycolipid?
A. Galactolipids
B. Sulpholipids
C. Cerebrosides
D. None of these
99. Lipoproteins are found in?
A. Membrane of mitochondria
B. In blood
C. In chloroplast
D. Membrane of bacteria
E. All of these
100. Cells of the heart depend upon which molecule for their energy supply?
A. Acylglycerols
B. Waxes
C. Phospholipids
D. Terpenoids
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