Question 11 Mark
What is the Haworth structure of sucrose?
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Question 21 Mark
Write the definition of anomer.
Answer
View full question & answer→Anomer : In the anomer-cyclic structure, glucose has two forms. One is called $\alpha- D$-glucose and the other is called $\beta$-D-glucose. In both forms, the first carbon is asymmetric and is called anomer. In $\alpha$-glucose, - OH group is present on the right side while in $\beta$-glucose it is present on the left side, since this difference occurs at Cl , it is called anomeric carbon.
Question 31 Mark
What is the function of insulin hormone?
Answer
View full question & answer→To control glucose level in our body.
Question 41 Mark
What are male sex hormones called?
Answer
View full question & answer→Androgen.
Question 51 Mark
Is it necessary for humans to drink milk?
Answer
View full question & answer→Milk is an excellent source of vitamins and minerals, particularly calcium. It has an important role in bone health.
Question 61 Mark
Why are carbohydrates called disaccharides?
Answer
View full question & answer→Carbohydrates are polymer of sugar or sugar monomers, hence they are called saccharides.
Question 71 Mark
Name the sweetest sugar.
Answer
View full question & answer→Fructose.
Question 81 Mark
Why is glucose called dextrose?
Answer
View full question & answer→Glucose is dextrorotatory, hence it is also called dextrose.
Question 91 Mark
What bonds join nucleotides together?
Answer
View full question & answer→Phosphodiester bond.
Question 101 Mark
Answer
View full question & answer→Protease and peptidase.
Question 111 Mark
Which water soluble vitamin stored in liver?
Answer
View full question & answer→Vitamin $B_{12}$.
Question 121 Mark
Which diseases caused due to deficiency of vitamin D.
Answer
View full question & answer→Rickets and Osteomalacia.
Question 131 Mark
Which vitamin is known as cyanocobalamine?
Answer
View full question & answer→Vitamin $B _{12}$.
Question 141 Mark
What is vitamin $B_2$ called as?
Answer
View full question & answer→Riboflavin.
Question 151 Mark
What happens when protein is heated with ninhydrin?
Answer
View full question & answer→When protein is heated with ninhydrin blue colour is obtained.
Question 161 Mark
Name the main source of vitamin K.
Answer
View full question & answer→Green leafy vegetables.
Question 171 Mark
Mention the main sources of protein.
Answer
View full question & answer→Milk, cheese, pulses, peanuts and meat.
Question 181 Mark
Name the water soluble vitamins.
Answer
View full question & answer→B group vitamins and vitamin C.
Question 191 Mark
What are basic amino acid?
Answer
View full question & answer→Amino acids which have more number of amino $\left(- NH _2\right)$ group than carboxyl $(- COOH )$ group are called basic aminos acids.
Question 201 Mark
What type of compounds are bases?
Answer
View full question & answer→Bases are heterocyclic compounds.
Question 211 Mark
Write the formula of Alanine (amino acid).
Question 221 Mark
What is the formula of peptide bond?
Answer
View full question & answer→ $- CO - NH -$
Question 231 Mark
Write the value of specific rotation of $\alpha- D$ glucose and $\beta$-D-glucose.
Answer
View full question & answer→The value of specific rotation of $\alpha$-D-glucose is $112^{\circ}$ and for $\beta$-D-glucose it is $19^{\circ}$.
Question 241 Mark
What are the sources of sucrose?
Answer
View full question & answer→Sucrose is obtained from sugarcane and sugarbeet.
Question 251 Mark
Which polysaccharide is stored in the liver of animals?
Answer
View full question & answer→Glycogen.
Question 261 Mark
Mention the products of reaction of glucose with the following : (i) Bromine water (ii) Sodium amalgam and water.
Answer
View full question & answer→ (i) Glucose gets oxidised by bromine water to give gluconic acid.
(ii) Glucose is reduced by sodium amalgam $( Na / Hg )$ and water to give sorbitol.
(ii) Glucose is reduced by sodium amalgam $( Na / Hg )$ and water to give sorbitol.
Question 271 Mark
Name one compound which is a carbohydrate but its molecular formula is not according to the general formula of carbohydrate.
Answer
View full question & answer→Rhamnose $\left( C _6 H _{12} O _5\right)$.
Question 281 Mark
Give the structure of ribose.
Answer
View full question & answer→$CH _2( OH )-( CHOH )_3- CHO$
Question 291 Mark
Give two examples of disaccharides.
Answer
View full question & answer→Maltose and Lactose.
Question 301 Mark
Give the structure of erythrose.
Answer
View full question & answer→$CH _2( OH )-( CHOH )_2- CHO$
Question 311 Mark
Name two compounds in which the ratio of hydrogen and oxygen is $2: 1$ but they are not carbohydrates.
Answer
View full question & answer→Acetic acid $\left( C _2 H _4 O _2\right)$ and Lactic acid $\left( C _3 H _6 O _3\right)$.
Question 321 Mark
What are the main biomolecules found in biological system?
Answer
View full question & answer→Biomolecules like carbohydrates, proteins, nucleic acid and lipids etc. are found in biological systems.
Question 331 Mark
What is oligosaccharide?
Answer
View full question & answer→Carbohydrates which give two to ten monosaccaharide units on hydrolysis are called oligosaccharides.
Question 341 Mark
Name the functional group present in fructose.
Answer
View full question & answer→Fructose has a ketonic group at $C -2$ and five - OH groups.