Tag: biological molecules
Questions Related to biological molecules
Carbohydrates, which are present in the cell membrane takes part in which of the following?
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Transport of substance.
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Cell recognition.
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Attachment to microfilament.
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Attachment to microtubules.
Carbohydrates which are present in the cell membrane take part in cell recognition. Cell recognition is defined as an active process giving rise to a specific response.
Maltose consists of which one of the following :
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$\beta$ - Glucose and $\beta$ - Galactose
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$\alpha$ - Glucose and $\alpha$ - Fructose
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$\alpha$ - Sucrose and $\beta$ - Glucose
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Glucose and Glucose
Inulin found in plant cell is a ____________.
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Lipid
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Protein
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Polysaccharide
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Vitamin
What should be given to an athlete for instant energy?
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Carbohydrates
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Protein
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Fat
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Vitamin
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 :
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Starch, Glycogen, Cellulose
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Sucrose, Maltose, Glucose
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Glucose, Fructose, lactose
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Galactose, Starch, Sucrose
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 __________________.
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Carbohydrate, Protein, Fat and Nucleic acid
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Protein, Fats , Nucleic acid and Carbohydrate and nucleic acid
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Protein, Fats, Carbohydrate and Nucleic acid
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Carbohydrate, Fats, Proteins and Nucleic acid
About 60% of our total energy requirements is met by
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Vitamins
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Fats
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Proteins
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Carbohydrates
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
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Carbohydrate
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Protein
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Fat
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Nucleic acid
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
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4.8 cal
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4.2 kcal
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9 joules
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9.2 kcal
1 gram of carbohydrates- 4kcal
1 gram of protein- 4 kcal
1 gram of fats- 9 kcal
Which one is not a source of carbohydrates?
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Wheat
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Gram
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Rice
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Sorghum
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.