What type of macromolecule is glycogen?
Glycogen is a polysaccharide that serves as a storage form of glucose in animals.
Ref: NCERT Class 11 Biology Chapter 9: Biomolecules Proteins and Polysaccharides - Structure and Functions
#energy storage
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What is the primary function of the fat bodies in frogs?
Fat bodies in frogs store energy, which is used during hibernation and breeding seasons.
Ref: NCERT Class 11 Biology Chapter 7: Structural Organisation in Animals Frog - Anatomy - Nervous System Sense Organs and Reproductive System
Which component represents energy stored in Odum's model?
In simplified versions of Odum’s universal energy-flow model, S denotes energy stored as biomass or accumulated organic matter. Incoming assimilated energy is partitioned among respiration, production, storage, and exported or unassimilated pathways. Storage is a stock measured at a time, whereas production and respiration are rates over time. Recognizing that distinction prevents confusing standing biomass with productivity: a system may have a large S because biomass persists even when its current production rate is modest. Mass loss alone cannot identify mechanism, because leaching, fragmentation, respiration, assimilation, and stabilization can produce different fates for carbon and nutrients. The distinction between gross transformation and net nutrient release is important: simultaneous microbial uptake can conceal substantial biochemical turnover. Environmental effects are often nonlinear; drought suppresses microbial access to substrates, waterlogging restricts oxygen, and extreme heat can reduce activity despite faster kinetics. Substrate stoichiometry links carbon processing to nutrient demand, so identical mass loss can accompany mineralization in one litter type and immobilization in another.
Ref: Fundamentals of Ecology, Odum & Barrett, 5th Ed., Ch. 3
Animals typically digest their food in an internal cavity and store reserve food energy primarily in the form of:
Unlike plants which store excess photosynthetic energy mostly as starch, the metabolic systems of animals are vastly different. According to the NCERT Biological Classification chapter, members of Kingdom Animalia directly store their reserve food energy primarily as 'glycogen or fat'. These highly efficient energy storage molecules can be rapidly mobilized during locomotion or starvation periods.
Ref: NCERT Class 11 Biology > Chapter 2: Biological Classification > 2.5 Kingdom Animalia
Which component of ATP contains the highest energy?
Phosphate bonds is the correct answer as it accurately identifies the biological location, composition, or distribution described in this question. In Bioenergetics, the spatial organization and localization of molecules are critical to their function. Phosphate bonds is specifically associated with the structure or compartment mentioned because of its unique biochemical properties and physiological role. The other options (Adenine, Ribose, and Hydrogen bonds) are primarily associated with different cellular compartments, tissues, or structural contexts.
Ref: Campbell Biology, Urry et al., 12th Ed.
What is the primary function of glycogen in animals?
Energy storage accurately defines or describes the concept asked in this question. Within Carbohydrates, precise definitions and terminology are essential for clear scientific communication. The other options (Structural support, Enzyme activation, and Protein synthesis) either describe related but distinct concepts, use incorrect terminology, or confuse similar-sounding terms that have different scientific meanings. A thorough understanding of exact definitions helps distinguish between closely related biological concepts and is crucial for competitive examinations.
Ref: Lehninger Principles of Biochemistry, Nelson & Cox, 8th Ed., Ch. 7
The main function of glycogen in animals is:
Energy storage is the accurate answer because it correctly identifies the biological function or role described in this question. In Carbohydrates, understanding the specific functions of molecules, enzymes, or structures is fundamental. Energy storage fulfills this particular biological role through its specific structural properties, biochemical activity, or physiological mechanism. The other options (Structural support, Enzyme activation, and Cell signaling) serve different biological functions or are associated with other processes, pathways, or structural roles within the cell or organism.
Ref: Lehninger Principles of Biochemistry, Nelson & Cox, 8th Ed., Ch. 7