Carbohydrates Quiz
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Questions and Answers

Which of the following is a polysaccharide found in plant cell walls?

  • Lactose
  • Cellulose (correct)
  • Maltose
  • Sucrose
  • What is the most abundant disaccharide composed of?

  • Two D-glucose molecules
  • One D-glucose molecule and one D-galactose molecule
  • One D-glucose molecule and one D-fructose molecule (correct)
  • Two D-fructose molecules
  • What is the difference between reducing and non-reducing disaccharides?

  • Reducing disaccharides are composed of two monosaccharides linked together, while non-reducing disaccharides are composed of three or more monosaccharides
  • Reducing disaccharides have a functional group that can accept electrons, while non-reducing disaccharides cannot
  • Reducing disaccharides have a functional group that can donate electrons, while non-reducing disaccharides cannot (correct)
  • Reducing disaccharides are found in processed and refined foods, while non-reducing disaccharides are found in unrefined foods
  • What is the primary role of lactate in the body during exercise?

    <p>To regulate pH balance in muscle tissue</p> Signup and view all the answers

    What is the primary difference between slow-twitch oxidative and glycolytic muscle fibers?

    <p>Slow-twitch oxidative fibers have a higher capacity for ATP production</p> Signup and view all the answers

    What is the primary function of the bicarbonate buffering system during exercise?

    <p>To regulate pH balance in muscle tissue</p> Signup and view all the answers

    What is the process of glycolysis?

    <p>The breakdown of glucose to pyruvate</p> Signup and view all the answers

    What is the role of lactate in the body during exercise?

    <p>To remove waste products</p> Signup and view all the answers

    What is the mechanism of the bicarbonate buffering system during exercise?

    <p>To prevent acidosis</p> Signup and view all the answers

    Study Notes

    Carbohydrates: Structure, Classification, and Use in Living Organisms

    • Carbohydrates are organic compounds made up of carbon, hydrogen, and oxygen with a hydrogen-oxygen atom ratio of 2:1.

    • The term carbohydrate is used synonymously with saccharide and includes sugars, starch, and cellulose.

    • Carbohydrates are divided into monosaccharides, disaccharides, oligosaccharides, and polysaccharides.

    • Monosaccharides and disaccharides are commonly referred to as sugars and their names often end in the suffix -ose.

    • Polysaccharides serve as an energy store and as structural components in living organisms.

    • Carbohydrates are found in a wide variety of natural and processed foods, including starch in cereals and sugars in table sugar, milk, and honey.

    • Cellulose, a polysaccharide found in plant cell walls, is one of the main components of insoluble dietary fiber.

    • Monosaccharides are the simplest carbohydrates and cannot be hydrolyzed to smaller carbohydrates.

    • Monosaccharides are classified based on the placement of their carbonyl group, the number of carbon atoms they contain, and their chiral handedness.

    • Monosaccharides can exist in both straight-chain and cyclic forms, with the cyclic form having an anomeric carbon that becomes a stereogenic center.

    • Disaccharides are composed of two monosaccharide units bound by a glycosidic linkage formed via a dehydration reaction.

    • Sucrose is the most abundant disaccharide and is composed of one D-glucose molecule and one D-fructose molecule.Carbohydrates: Types, Classification, Nutrition, and Health Effects

    • Carbohydrates are organic compounds made up of carbon, hydrogen, and oxygen, and are an important source of energy for living organisms.

    • Disaccharides, such as lactose, maltose, and cellobiose, are composed of two monosaccharides linked together.

    • Carbohydrates can be classified into two types: reducing and non-reducing disaccharides, depending on the presence of a functional group.

    • Simple sugars provide 3.87 kilocalories of energy per gram, while complex carbohydrates provide 3.57 to 4.12 kilocalories per gram.

    • Processed and refined foods, such as sweets, cookies, and soft drinks, are high in carbohydrates, while unrefined foods, such as beans, tubers, and unrefined fruits, are lower in carbohydrates.

    • Glucose is a universal source of energy, although other monosaccharides and disaccharides can also be metabolized by organisms.

    • Polysaccharides are a common source of energy, but not all organisms can metabolize them, such as cellulose and chitin.

    • Carbohydrates are divided into simple and complex types, but this distinction has little value in determining their nutritional quality.

    • Glycemic index and glycemic load are used to rank carbohydrate-rich foods based on their effects on blood glucose levels, while the insulin index ranks foods based on their effects on blood insulin levels.

    • Low-carbohydrate diets may miss out on health advantages, but can be effective in achieving weight loss over the short term.

    • The ketogenic diet is an extreme form of low-carbohydrate diet used in treating epilepsy, but may cause undesirable side effects when used for weight loss.

    • Carbohydrate metabolism involves the formation, breakdown, and interconversion of carbohydrates in living organisms, with glucose being the most important carbohydrate.

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    Description

    Test your knowledge on carbohydrates with this informative quiz! Learn about the structure, classification, and uses of carbohydrates in living organisms. Explore the different types of carbohydrates, including monosaccharides, disaccharides, oligosaccharides, and polysaccharides. Discover the nutritional value of carbohydrates and their effects on health. Challenge yourself with questions on carbohydrate metabolism, glycemic index, and glycemic load. This quiz is perfect for anyone interested in improving their understanding of carbohydrates and their

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