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Questions and Answers
What is the primary function of metabolic pathways?
What is the primary function of metabolic pathways?
- To transport nutrients
- To degrade cellular waste
- To convert substrates to products (correct)
- To store energy
Glycogenolysis refers to the synthesis of glycogen.
Glycogenolysis refers to the synthesis of glycogen.
False (B)
What is the most common form of carbohydrate used for energy metabolism?
What is the most common form of carbohydrate used for energy metabolism?
Glucose
Polysaccharides are mainly used for ______ storage.
Polysaccharides are mainly used for ______ storage.
Match the following terms with their descriptions:
Match the following terms with their descriptions:
Flashcards
Metabolic Pathway
Metabolic Pathway
A series of chemical reactions that convert substrates into products, catalyzed by enzymes.
Anabolic Pathway
Anabolic Pathway
The creation of new molecules, usually requiring energy.
Catabolic Pathway
Catabolic Pathway
The breakdown of molecules, usually releasing energy.
Metabolism
Metabolism
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Glycogen
Glycogen
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Study Notes
Metabolic Pathways
- Metabolic pathways are a series of reactions converting substrates to products.
- Enzymes catalyze these reactions.
- Pathways are categorized as anabolic (synthesis) or catabolic (degradation).
- Intermediates link metabolic pathways.
- Metabolism encompasses all synthesis and breakdown pathways.
Cellular Chemical Energy
- Cells store energy in reducing potential and high-energy covalent bonds.
Carbohydrates
- Carbohydrates contain many hydroxyl (-OH) groups.
- Glucose is the most common carbohydrate.
- They are used for energy metabolism and biosynthesis of other carbohydrates.
Monosaccharides
- Monosaccharides are used for energy and biosynthesis.
- Small monosaccharides have 3-7 carbons, 6 being the most common.
Complex Carbohydrates (Polysaccharides)
- Polysaccharides are used for energy storage (starch, glycogen) and structural components (chitin, cellulose).
- Starch is a combination of amylose and amylopectin.
Glycogen Metabolism
- Glycogen is the primary carbohydrate storage form in animals.
- Glycogen synthesis is known as glycogenesis.
- Glycogen degradation is called glycogenolysis.
- Glycogen synthase and glycogen phosphorylase are key reciprocal regulatory enzymes.
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