Tag: carbohydrate and its test

Questions Related to carbohydrate and its test

Maltose consists of which one of the following :

biology food and it's constituents energy giving food carbohydrate and its test biological molecules

  1. $\beta$ - Glucose and $\beta$ - Galactose

  2. $\alpha$ - Glucose and $\alpha$ - Fructose

  3. $\alpha$ - Sucrose and $\beta$ - Glucose

  4. Glucose and Glucose

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Correct Option: D
Explanation:
Maltose is a common disaccharide made up of two units of glucose.

Inulin found in plant cell is a ____________.

biology food and it's constituents energy giving food carbohydrate and its test biological molecules

  1. Lipid

  2. Protein

  3. Polysaccharide

  4. Vitamin

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Correct Option: C

What should be given to an athlete for instant energy?

biology food and it's constituents energy giving food carbohydrate and its test biological molecules

  1. Carbohydrates

  2. Protein

  3. Fat

  4. Vitamin

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Correct Option: A
Explanation:

Carbohydrate is essential as the most immediate and efficient fuel to the muscles. In its circulating form in the blood, carbohydrate is called as glucose, and its storage form in muscles and in the liver is called as glycogen. When the athlete first begins to exercise, body draws on the circulating glucose as its first source of energy. Glycogen, as the storage carbohydrate, comes in when circulating glucose drops to a lower level.  Without enough carbohydrates, performance as an athlete will be seriously impacted. 

In which one of the following groups, all the three are examples of polysaccharides :

biology food and it's constituents energy giving food carbohydrate and its test biological molecules

  1. Starch, Glycogen, Cellulose

  2. Sucrose, Maltose, Glucose

  3. Glucose, Fructose, lactose

  4. Galactose, Starch, Sucrose

Show answer
Correct Option: A
Explanation:

Answer is option A i.e. "Starch, Glycogen, Cellulose"
Poysaccharides are carbohydrate polymers (e.g. starch, cellulose, or glycogen) which are made up of more than 10 sub-units of monosaccharide molecules join together.
Starch, glycogen and cellulose are polysaccharides of glucose. Maltose, sucrose and lactose are disaccharides, while, fructose and galactose are monosaccharides.

Decreasing order of amount of organic compound in animal body __________________.

biology food and it's constituents energy giving food carbohydrate and its test biological molecules

  1. Carbohydrate, Protein, Fat and Nucleic acid

  2. Protein, Fats , Nucleic acid and Carbohydrate and nucleic acid

  3. Protein, Fats, Carbohydrate and Nucleic acid

  4. Carbohydrate, Fats, Proteins and Nucleic acid

Show answer
Correct Option: C
Explanation:
The protein is the most important component of a cell. It forms an integral part of the cell membrane of all plants and animal cells. As a result protein is found in maximum amount in  human body.
Most of the hormones which are produced in the body and also constituents are blood are made up of proteins.
Apart from protein fat also has a considerable amount of mass in the body. this is followed by carbohydrate and the nucleic acid which is in least amount in the body.
Thus the correct option is C.



About 60% of our total energy requirements is met by 

biology food and it's constituents energy giving food carbohydrate and its test biological molecules

  1. Vitamins

  2. Fats

  3. Proteins

  4. Carbohydrates

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Correct Option: D
Explanation:

Carbohydrates, proteins and fats in the foods provide energy for the body functions and physical activities. They, however, do not produce same amount of energy. the following is the energy-contribution by respective molecules.
Carbohydrates- 55-75% of energy contribution
Proteins- 10-15% of energy contribution
Fats- 15-30% of energy contribution
Therefore, the correct answer is option D.

Chemical nature of chitin is 

biology food and it's constituents energy giving food carbohydrate and its test biological molecules

  1. Carbohydrate

  2. Protein

  3. Fat

  4. Nucleic acid

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Correct Option: A
Explanation:

Chitin is a carbohydrate. It is a long-chain polymer of a N-acetylglucosamine, a derivative of glucose, and is found in many places throughout the natural world. It is a characteristic component of the cell walls of fungi, the exoskeletons of arthropods such as crustaceans (e.g., crabs, lobsters and shrimps) and insects, the radulae of molluscs and the beaks and internal shells of cephalopods, including squid and octopuses. The structure of chitin is comparable to the polysaccharide cellulose, forming crystalline nanofibrils or whiskers. 

The energy produced by 1g of carbohydrate is

biology food and it's constituents energy giving food carbohydrate and its test biological molecules

  1. 4.8 cal

  2. 4.2 kcal

  3. 9 joules

  4. 9.2 kcal

Show answer
Correct Option: B
Explanation:
Carbohydrates, proteins and fats in the foods provide energy for the body functions and physical activities. They, however, do not have same energy content. The following is the energy-content by respective nutrients:
1 gram of carbohydrates- 4kcal
1 gram of protein- 4 kcal
1 gram of fats- 9 kcal
So, the correct answer is '4.2 kcal'

Which one is not a source of carbohydrates?

biology food and it's constituents energy giving food carbohydrate and its test biological molecules

  1. Wheat

  2. Gram

  3. Rice

  4. Sorghum

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Correct Option: B
Explanation:

The chickpea or chick pea is a legume of the family Fabaceae, subfamily Faboideae. It is also known as gram, or Bengal gram, garbanzo or garbanzo bean, and sometimes known as Egyptian pea, ceci, cece or chana, or Kabuli chana. It is the major source of proteins and not of carbohydrates. Wheat, rice and sorghum are the sources of carbohydrates. Thus, the correct answer is option B.

Which of the following nutrients do not provide energy for animals?

biology food and it's constituents energy giving food carbohydrate and its test biological molecules

  1. Fats

  2. Carbohydrates

  3. Vitamins

  4. Proteins

Show answer
Correct Option: C
Explanation:
Fats are converted into energy when they are completely oxidized to CO2 and water by β-oxidation and the citric acid cycle. Carbohydrates are completely oxidized to CO2 and water during aerobic respiration and lead to the generation of ATP. Proteins get converted into intermediates of the respiratory cycle and finally get converted to high yielding energy molecules.
Vitamins do not directly play an important role in energy production however, they support the metabolism indirectly.
So, the correct answer is 'Vitamins'