Biology · Textbook solutions

Biomolecules

Every solved example, exercise, and miscellaneous question, in the order the textbook teaches them. · 38 questions

Exercise

38 q

Practice · 7

Choose correct option
Ex Q1(A) $Sugar, amino acids and nucleotides unite to their respective subunits to form--------$
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Ex Q1(B) $Glycosidic bond is found in ---------------.$
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Ex Q1(C) $Amino acids in a polypeptide are joined by ---------------bond.$
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Ex Q1(E) $Linoleic, Linolenic and -------------------- acids are referred as essential fatty acids since they cannot be synthesized by the body and hence must be included in daily diet.$
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Ex Q1(F) $Haemoglobin is a type of -------------- protein, which plays indispensible part in respiration.$
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Ex Q1(G) $When inorganic ions or metallo-organic molecules bind to apoenzyme, they together form------$
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Ex Q1(H) $In enzyme kinetics, Km= Vmax/2. If Km value is lower, it indicates ----------------$
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Practice · 1

Solve the following questions:
Ex Q2(A) $Observe the following figure and name the type of bond shown by arrow in the structure.$

Practice · 12

Answer the following questions
Ex Q3(A) $What are building blocks of life?$
Ex Q3(B) $Explain the peptide bond.$
Ex Q3(C) $How many types of polysaccharides you know?$
Ex Q3(D) $Enlist the significance of carbohydrates.$
Ex Q3(E) $What is a reducing sugar?$
Ex Q3(F) $What is the basic difference between saturated and unsaturated fatty acid?$
Ex Q3(G) $Enlist the examples of simple proteins and give their significance.$
Ex Q3(H) $Explain the secondary structure of protein with examples.$
Ex Q3(I) $Explain the induced fit model for mode of enzyme action.$
Ex Q3(J) $What is RNA? Enlist types of RNA.$
Ex Q3(K) $Describe the concept of metabolic pool.$
Ex Q3(L) $How do secondary metabolites are useful for mankind?$

Practice · 3

Solve the following questions:

Ex Q4(A)

Complete the following chart. Protein Physiological role Collagen ............................ ........................... Responsible for muscle contraction Immunoglobulin IgG .............................. ..................... Significant in respiration Fibrinogen ................................

Ex Q4(B) $Answer the questions with reference to the following figure. i. Name the type of bond formed between two polypeptides. ii. Which amino acid is involved in the formation of such bond? iii. Amongst I, II, III and IV structural levels of protein, which level of structure includes such bond?$
Ex Q4(C) $Match the following items given in column I and II. Column I Column II i. RNA a. Induced fit model ii. Yam plant b. Flax seeds iii. Koshland c. Hydrolase iv. Omega-3-fatty acid d. Uracil v. Sucrase e. Anti-fertility pills$

Protein	Physiological role
Collagen	............................
...........................	Responsible for muscle contraction
Immunoglobulin IgG	..............................
.....................	Significant in respiration
Fibrinogen	................................

Practice · 11

Long answer questions
Ex Q5(A) $What are biomolecules? Explain the building blocks of life.$
Ex Q5(B) $Explain the classes of carbohydrates with examples.$
Ex Q5(C) $Describe the types of lipids and mention their biological significance.$
Ex Q5(D) $Explain the chemical nature, structure and role of phospholipids in biological membrane.$
Ex Q5(E) $Describe classes of proteins with their importance.$
Ex Q5(F) $What are enzymes? How are they classified? Mention example of each class.$
Ex Q5(G) $Explain the properties of enzymes.$
Ex Q5(H) $Describe the factors affecting enzyme action.$
Ex Q5(I) $What are nucleic acids? Enlist the point of differences among DNA and RNA.$
Ex Q5(J) $What are the types of RNA? Mention the role of each class of RNA.$
Ex Q5(K) $What is metabolism? How metabolic pool is formed in the cell.$

Practice · 1

Ex Q6 $If double stranded DNA has 14% C (cytosine) what is percentage of A (adenine), T(thymine) and G (gaunine) would you expect?$

Practice · 3

Name
Ex Q7(i) $The term that describes all the chemical reactions taking place in an organism.$
Ex Q7(ii) $The form in which carbohydrate is transported in a plant.$
Ex Q7(iii) $The reagent used for testing of reducing sugar.$