18 Questions
What is the main role of covalent bonds in biological structures?
Maintaining 3D structures
Which element, in addition to carbon, is commonly found in biomolecules?
Nitrogen (N)
How does ATP serve as the chemical currency of energy?
By facilitating metabolic reactions within cells
Which type of carbon-based molecule can have linear, cyclic, branched, and planar structures?
Lipids
In living systems, where does the energy required to maintain life primarily come from?
Energy transformations within cells
Which of the following is NOT an essential element for life, besides carbon?
Magnesium (Mg)
What is the central role of a carbon atom in biomolecules?
Acting as a structural component
Which statement accurately describes the 3D structure of macromolecules?
Allows macromolecules to interact with other molecules
What distinguishes anabolism from catabolism?
Anabolism is exergonic, while catabolism is endergonic.
Why is the spatial separation of energy-yielding and energy-consuming reactions important in eukaryotic cells?
To maintain homeostasis and avoid equilibrium
Which statement best describes the role of metabolism in living organisms?
Metabolism involves all chemical reactions that occur in cells
Which characteristic defines living matter according to the text?
Extraction and use of energy for building structures and performing work
Which of the following is NOT an inorganic precursor converted to metabolites in living systems?
Glucose
What are the major constituents of cells according to the text?
Carbohydrates, lipids, proteins, and nucleic acids
What is the function of macromolecules in cells?
Serve as building blocks for biosynthesis
Which organelles are involved in synthesis reactions (anabolism) within a cell?
Endoplasmic reticulum and Golgi apparatus
What is the significance of the three-dimensional structure of molecules?
Influences the molecule's function
What do macromolecules primarily consist of?
Polymers made of covalently connected monomers
Test your knowledge on the three-dimensional structure of biomolecules such as proteins, polysaccharides, and nucleic acids. Understand how the structure of a molecule influences its function and identity.
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