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XII Biology Zoology New Chapter-9 Biomolecules [True or False Statement Questions]
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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
A metabolic pathway involves multistep chemical reactions catalyzed by different enzymes.
1
2 A metabolic pathway involves single-step chemical reactions catalyzed by one enzyme.
3 A protein is a homopolymer consisting of one type of amino acid.
4 A protein's primary structure refers to its three-dimensional view.
5 A protein's tertiary structure is essential for its biological activities.
6 Acid-soluble pool in living tissues contains inorganic compounds.
Activation energy is the difference in average energy content between the substrate and the
7
product.
Activation energy is the difference in potential energy content between the substrate and the
8
product.
9 Adenine is a nitrogen base found in proteins.
10 Adenosine is not a nucleoside and does not serve as genetic material.
11 All proteins contain the same 21 amino acids.
Amino acids are the building blocks of nucleic acids, and they play a role in energy storage
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within cells.
Amino acids, sugars, fatty acids, nucleotides, and nitrogen bases are all examples of small
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molecular weight biomolecules in living systems.
Analyzing the composition of biomolecules in biological samples holds minimal significance
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for comprehending biological processes and their implications.
Biomolecule models provide insights into atomic-level spatial arrangements and interactions.
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Biomolecules are only found in living organisms and have no significance in non-living matter.
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Biomolecules have various roles in living organisms, but their impact on metabolic reactions is
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relatively minimal and often considered insignificant.
Biomolecules offer diverse and significant practical applications across fields like medicine,
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industry, agriculture, and biotechnology, making their study valuable.
Building atomic models of biomolecules is an essential step in understanding their functions
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and interactions in living systems.
Building biomolecule models, especially atomic models, has limited practical value and is
20 primarily for academic purposes, offering minimal insights into their functions across
disciplines.
21 Carbohydrates and lipids consist mainly of nitrogen bases.
Carbohydrates are essential for providing energy to cells and have no role in cell adhesion or
22
recognition.
23 Carbohydrates are examples of primary macromolecules found in living systems.
24 Carbohydrates are primarily involved in energy storage and structural support in cells.
25 Carbohydrates are the least abundant chemical in living organisms.
26 Carbohydrates play a role in cell recognition and signaling processes.
Cofactors, including co-enzymes like NAD+ and metal ions, are essential for enzyme activity,
27
facilitating electron transfer in oxidation-reduction reactions.
Cofactors, including metal ions and co-enzymes, play a role in maintaining enzyme structure
28
but have no impact on catalytic activity.
29 Competitive inhibitors bind irreversibly to the active site of an enzyme.
Competitive inhibitors compete with substrates for binding to the active site of an enzyme.
30
31 Denaturation of a protein can result in the loss of its biological activity.
32 DNA and RNA are both involved in protein synthesis, as they consist nucleotides.
33 DNA and RNA consist only of nucleotides and amino acids.
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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
34 DNA and RNA function as genetic material in living organisms.
DNA and RNA serve as carriers of genetic information, with RNA having diverse roles beyond
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its function as genetic material.
DNA replication is a process that ensures accurate transmission of genetic information during
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cell division.
DNA's double-stranded structure enables the transfer of genetic information through the
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synthesis of RNA from a DNA template.
DNA's double-stranded structure, with complementary base pairing through hydrogen
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bonding, ensures accurate replication and contributes to genetic stability.
DNA's genetic information transfer process involves the synthesis of proteins from a DNA
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template.
Engaging in exercises to enhance understanding of biomolecules is unnecessary, given the
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straightforward and simple nature of these concepts.
41 Enzymatic reaction velocity increases continuously with substrate concentration.
Enzymatic reaction velocity increases with substrate concentration until Vmax is reached.
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43 Enzyme activity can be affected by changes in temperature and pH.
Enzyme specificity drives catalytic efficiency as influenced by enzyme shape and active site.
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Enzyme-catalyzed reactions are influenced by temperature, pH, and substrate specificity.
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46 Enzymes and inorganic catalysts work efficiently at high temperatures.
Enzymes are biological molecules that can catalyze biochemical reactions without being
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affected themselves.
48 Enzymes are essential for maintaining the structural integrity of cell membranes.
Enzymes can be regulated through processes like allosteric inhibition and feedback inhibition.
49
50 Enzymes can function effectively across a wide range of pH and temperature conditions.
Enzymes can lower the activation energy required for a chemical reaction, thus increasing the
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reaction rate.
52 Enzymes catalyze reactions at a low rate through their active site.
Enzymes display substrate specificity, which arises from active site shapes, ensuring precise
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catalysis.
Enzymes exhibit optimal activity within specific pH and temperature ranges, beyond which
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they denature.
Enzymes exhibit substrate specificity, which means they can catalyze a wide range of
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reactions with different substrates.
Enzymes have a dual role, functioning as catalysts to facilitate non-spontaneous biochemical
56 reactions and also serving as structural components within biological systems.
57 Enzymes increase the activation energy of reactions and slow down reactions.
58 Enzymes increase the activation energy required for a reaction to occur.
59 Enzymes increase the activation energy required for chemical reactions.
Enzymes lower activation energy by destabilizing substrate bonds and stabilizing transition
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states, thereby accelerating reaction rates.
Enzymes lower the activation energy needed for a reaction, thus increasing the reaction rate.
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Enzyme-substrate binding is a reversible process that allows enzymes to interact with
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multiple substrates.
63 Essential amino acids can be synthesized by our body.
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