Tag: food and it's constituents

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Questions Related to food and it's constituents

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

Select the correct answer from the following statemets
1. Cutin is fatty acid polymer
2. Starch is glucose polymer
3. Sucrose is monosaccharide
4. Maltose is polymer of fructose.

  1. 1, 2, 3 are correct

  2. 1 and 2 are correct

  3. 2 and 4 are correct

  4. 1 and 3 are correct
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Cutin is a polymer of glycerol and certain types of fatty acids. It is an integral part of the cuticle of the leaf. 

Starch is formed by a-1,4 linkages between two glucose unit which is broken down during its digestion. It exist in two forms known as amylose and amylopectin. Amylose is a linear poly-D-glucose in which the monosaccharides are connected by alpha 1, 4 linkages. Amylopectin is has alpha 1, 4-glycosidic linkages with side chain branching of alpha 1,6 linkage.
Sucrose is a disaccharide formed by the glycosidic linkage between glucose and fructose. It can be broken into glucose and fructose by enzyme sucrase.
Maltose is a disaccharide formed by the glycosidic linkage between glucose monomers. It can be hydrolysed to glucose by enzyme maltase.
So, the correct answer is option B.

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

Inulin is a

  1. Lipid

  2. Carbohydrate

  3. Protein

  4. Nucleic acid
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Inulin is a storage polysaccharide in roots of Dahlia and related plants. It is also known as a fructan. It is not metabolized in the human body and is readily filtered through the kidney. Therefore, it is used in testing kidney function. Thus, the correct answer is B.

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

Macro molecule chitin is 

  1. Phosphorus containing polysaccharide

  2. Sulphur containing polysaccharide

  3. Simple polysaccharide

  4. Nitrogen containing polysaccharide
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Macro-molecule chitin is a complex nitrogen-containing polysaccharide containing amino sugars and chemically modified sugar for example -glucosamine, N-acetyl-galactosamine etc.

So, the correct answer is 'Nitrogen containing polysaccharide'

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

Carbohydrates, the most abundant biomolecules on earth, are produced by -

  1. Some bacteria, algae and green plant cells

  2. All bacteria, fungi and algae

  3. Fungi, algae and green plants cells

  4. Viruses, fungi and bacteria
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Green plants produce carbohydrates by the process of photosynthesis by using water, carbon die oxide and solar energy. Apart from this, some bacteria and algae can also produce carbohydrates in the form of food. 

So, option A is the correct answer. 

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

Which carbohydrate is found in the exoskeleton, of insects and crabs?

  1. Starch

  2. Chitin

  3. Cellulose

  4. Glycogen
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Chitin is the substance which is fibrous and made up of the long-chain polymer of N-acetylglucosamine, is a derivative of glucose. It is a major constituent of the exoskeleton of arthropods, crabs and also make the cell wall of fungi.

Hence, the correct answer is 'Chitin'

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

Which of the following is primary metabolite?

  1. Carotenoid

  2. Glucose

  3. Morphine

  4. Cellulose
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

  • Primary metabolites are those that are formed during the growth phase and supports in the overall development of cells. E.g., Carbohydrates, vitamins, proteins etc.
  • Secondary metabolites are those which are the end products of primary metabolites and are required for ecological activities of cells. E.g., Carotenoids, morphine etc. 
So, the correct option is 'Glucose'.

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

Which of the following have a glycosidic bond and hydrogen bond respectively?

  1. Polysaccharide and Water

  2. Fat and Polysaccharide

  3. Protein and fat

  4. Fat and Protein
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The glycosidic bond is a bond that holds a carbohydrate molecule with another group, which may or may not be a carbohydrate. Polysaccharides contain several monosaccharides that are linked to one another by glycosidic bonds. In water each water molecule binds four other water molecules by hydrogen bonds. This helps the water molecules to hold together (cohesion of water). 

So, the correct answer is ' Polysaccharide and Water'.

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

Which is odd - 

  1. chitin carbohydrates

  2. Pectin proteins

  3. Steriod lipid

  4. Wax lipid
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Chitin carbohydrates are the oldest in the given as it is a carbon-based factor. protein, lipids consist chain of nitrogen, hydrogen and carbon atoms however carbohydrate consists of a longer chain of carbon as well as various other groups of compounds. so, the correct option is 'chitin carbohydrates'.