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XI_Zoo_New_Chap_9_Biomolecules_The_Most_Challenging_True_or_False
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XI_Zoo_New_Chap_9_Biomolecules_The_Most_Challenging_True_or_False
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XII Biology_Zoology_New Chapter-9_Biomolecules [True or False Statement Questions]Sl # Statement (New Zoology, Chapter-9, Biomolecules) True/False
1 A chemical analysis of living tissues can identify numerous organic compounds. TRUE
2 A chemical analysis of living tissues cannot identify any organic compounds. FALSE
3 A metabolic pathway involves different enzymes catalyzing multiple steps. TRUE
A metabolic pathway involves multistep chemical reactions catalyzed by different enzymes.
4 TRUE
5 A metabolic pathway involves single-step chemical reactions catalyzed by one enzyme. FALSE
6 A nucleotide consists of a heterocyclic compound, a monosaccharide, and a phosphate. TRUE
7 A protein is a homopolymer consisting of one type of amino acid. TRUE
8 A protein's primary structure refers to its three-dimensional view. FALSE
9 A protein's tertiary structure is crucial for its biological activities. TRUE
Activation energy is the difference in average energy content between the substrate and the
10 TRUE
product.
Activation energy is the difference in potential energy content between the substrate and the
11 FALSE
product.
12 Adenine and Guanine are examples of substituted pyrimidines found in nucleic acids. FALSE
13 Adenine and guanine are nitrogen bases found in DNA and RNA. TRUE
14 Adenosine is not a nucleoside and does not serve as genetic material. FALSE
15 Adenylic acid is a nucleotide found in the acid-insoluble fraction of living tissues. FALSE
16 Adenylic acid is not a nucleotide found in living organisms. FALSE
17 Adult human haemoglobin consists of 4 different subunits. TRUE
18 Adult human haemoglobin consists of 4 identical subunits. FALSE
19 Adult human hemoglobin consists of 4 subunits, all of which are identical. FALSE
20 All lipids are considered macromolecules due to their molecular weights. FALSE
21 All living organisms are composed of thousands of compounds with different structures. TRUE
22 All living organisms are made of the same chemicals, i.e., elements and compounds. FALSE
All living organisms are made of the same elements and compounds as non-living matter.
23 FALSE
24 All proteins are composed of a single polypeptide or subunit. FALSE
25 All proteins consist of more than one polypeptide or subunit. FALSE
26 Amino acids can be essential or non-essential; the latter are synthesized by our body. TRUE
27 Amino acids have variable groups occupying the four valency positions. FALSE
28 Amino acids in proteins are limited to only twenty types. TRUE
An increase in substrate concentration initially increases the velocity of the enzymatic
29 TRUE
reaction until reaching Vmax.
30 An increase in substrate concentration leads to a decrease in enzyme activity. FALSE
31 Analytical techniques do not help in separating compounds from other substances. FALSE
Analytical techniques help in isolating and purifying organic compounds from living tissues.
32 TRUE
33 Aromatic amino acids have ionizable -NH2 and -COOH groups in their structures. TRUE
Biologists describe the protein structure at four levels: primary, secondary, tertiary, and
34 TRUE
quaternary.
35 Biomacromolecules are composed of small molecular weight biomolecules. FALSE
36 Biomacromolecules are made of monomers that are all the same type. FALSE
37 Biomacromolecules are monomers made of the same building blocks as biomolecules. FALSE
38 Biomacromolecules are polymers made of identical building blocks. FALSE
39 Biomacromolecules have molecular weights exceeding 1000 daltons. TRUE
40 Biomacromolecules have molecular weights exceeding 800 daltons. TRUE
41 Biomacromolecules have molecular weights ranging from 100 to 800 daltons. FALSE
42 Biomacromolecules have molecular weights ranging from 18 to 800 daltons. FALSE
43 Biomacromolecules have molecular weights ranging from 800 to 10,000 daltons. TRUE
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, XII Biology_Zoology_New Chapter-9_Biomolecules [True or False Statement Questions]
Sl # Statement (New Zoology, Chapter-9, Biomolecules) True/False
44 Biomacromolecules include proteins, nucleic acids, polysaccharides, and lipids. TRUE
45 Biomolecules are classified into three types based on their molecular weights. FALSE
46 Biomolecules are classified into two types based on their molecular weights. TRUE
47 Biomolecules found in animal tissues are called primary metabolites. TRUE
Biomolecules found in living organisms are classified into micromolecules and
48 TRUE
macromolecules.
Biomolecules found in living organisms can be classified into micromolecules and
49 TRUE
macromolecules based on their abundance.
Biomolecules in living organisms are classified into micromolecules and macromolecules
50 FALSE
based on their abundance.
Biomolecules in living organisms include amino acids, monosaccharides, disaccharides, fatty
51 TRUE
acids, and nucleotides.
Both left-handed and right-handed helices are observed in proteins' secondary structure.
52 FALSE
53 Burning a tissue leads to the formation of 'ash' containing inorganic elements. TRUE
54 Carbohydrates and lipids have the same abundance in living tissues. FALSE
55 Carbohydrates are found in a higher percentage compared to nucleic acids in cells. FALSE
56 Carbohydrates are the second most abundant chemical in living organisms. FALSE
57 Carbohydrates represent 3% of the total cellular mass in living organisms. TRUE
Carbon, hydrogen, and oxygen are relatively more abundant in living systems compared to
58 TRUE
inanimate matter.
59 Carbonic anhydrase accelerates the reaction rate by about 1 million times. FALSE
60 Carbonic anhydrase accelerates the reaction rate by about 10 million times. TRUE
61 Cell membrane fragments form vesicles that are water-soluble when a tissue is ground. FALSE
62 Cell membranes are broken into vesicles that are not water-soluble. TRUE
63 Cellulose can hold I2 molecules in its helical portion, giving it a blue color. TRUE
64 Cellulose contains complex helices and can hold I2 molecules. TRUE
65 Cellulose is a homopolymer consisting of only glucose as building blocks. TRUE
66 Changes in temperature and pH can alter the tertiary structure of the enzyme. TRUE
67 Changes in temperature and pH can lead to the denaturation of enzymes. TRUE
68 Chemistry deals with isolating thousands of compounds from living organisms. TRUE
Chemistry involves isolating and determining the structure of thousands of compounds from
69 TRUE
living organisms.
70 Chitin is a complex polysaccharide found in animal cell walls. TRUE
71 Chitin is a complex polysaccharide found in the exoskeletons of arthropods. TRUE
72 Coenzymes and metal ions are both types of prosthetic groups. FALSE
73 Coenzymes are always organic compounds associated with the apoenzyme. FALSE
74 Coenzymes are essential for the functioning of a specific enzyme. TRUE
75 Coenzymes are involved in only one specific enzyme-catalyzed reaction. FALSE
76 Coenzymes are mainly inorganic compounds required for enzyme function. FALSE
77 Coenzymes are only involved in a single type of enzyme-catalyzed reaction. FALSE
Coenzymes are organic compounds that are permanently associated with the apoenzyme
78 FALSE
during catalysis.
79 Coenzymes are small inorganic molecules that are loosely bound to the apoenzyme. FALSE
80 Coenzymes are specific to individual enzymes and cannot be used by other enzymes. FALSE
81 Coenzymes can act as competitive inhibitors of enzyme activity. FALSE
82 Coenzymes can be reused in multiple enzyme-catalyzed reactions. TRUE
83 Coenzymes can serve as cofactors in multiple enzyme-catalyzed reactions. TRUE
84 Coenzymes play a role in the regulation of enzyme activity. TRUE
85 Cofactors are critical for the proper folding of the enzyme's polypeptide chains. TRUE
2 OF 11 RI_Best Wishes
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