BIOMOLECULES
1.Which kinds of structures of proteins are shown in the figures given below
2.Select the secondary metabolites from the list given below I. alkaloids II. flavonoids III. rubber IV. essential oils V. antibiotics VI. coloured pigments VII. scents VIII. gums IX. spices Choose the correct option
3.A high fever is dangerous to humans because
4.Enzymes are functional at
5.Choose the correct statement
6.The enzyme part, which combines with non-protein part to form a functional enzyme, is known as
7.In which one of the following enzymes copper is necessarily associated as an activator?
8.Which of the following statements regarding enzyme inhibition is correct?
9.Amino acids are organic compounds and are called α-amino acids. Why?
10.Enzymes that catalyses the removal of groups from substrates by mechanism other than hydrolysis, addition of groups to double bonds are called
11.Cholesterol is considered as a crucial molecule in animals because it is
12.The acid soluble pool, roughly represents
13.Choose the correct graph showing, the effect of pH on the velocity of a typical enzymatic reaction (V)?
14.Name the structural formulae of the given structures correctly
15.An organic substance bound to an enzyme and essential for its activity, is called
16.Select the wrong statement
17.Which of the following is not a coenzyme?
18.Name the term given to the left and right ends of a polysaccharide
19.Identify the term ‘ash’ in term of living tissue sample analysis from the statements given below
20.Pick out the wrong statement
21.In which one of the following sets of three items each belong to the category mentioned against them?
22.Michaelis Menten constant (km) is equal to
23.Arrange the steps of catalytic action of an enzyme in order and choose the correct option. I. The enzyme releases the products of the reaction and the enzyme is free for another substrate. II. The active site of enzyme is in close proximity of the substrate and breaks of chemical bonds of the substrate. III. The binding of substrate induces the enzyme to alter its shape fitting more tightly around the substrate. IV. The substrate binds to the active site of the enzyme fitting into the active site.
24.Which of the following secondary metabolites are used as drugs?
25.The given graph shows the effect of substrate concentration on the rate of reaction of the enzyme green gram-phosphatase. What does the graph indicate?
26.The figure given below shows three velocity substrate concentration curves for an enzyme reaction. What do the curves A, B and C depict respectively?
27.Select the correct option which represents the homopolysaccharides made up of glucose monomers
28.The inhibitor which binds to the enzyme at site other than the active site and do not resemble the substrate in structure is called
29.Which of the following statements about enzymes are correct? I. Enzymes do not alter the overall change in free energy for a reaction II. Enzymes are highly specific for reactions III. The energy input needed to start a chemical reaction is called activation energy IV. Enzymes are proteins whose three dimensional shape is key to their functions
30.Enzymes that catalyze inter-conversion of optical, geometrical or positional isomers are
31.The term metabolism means
32.Which enzyme catalyse the break down of hydrogen peroxide to water and oxygen?
33.The following reaction is catalysed by which of the enzyme? $NADH+H^+ + ½ O_2⟶NAD^++H_2 O$
34.Choose the correct option representing X and Y in the given graph
35.According to Watson-Crick model, DNA exists as a _A_. The two strands of polynucleotides are _B_. The backbone is formed by the sugar _C_, _D_ chain. The nitrogen bases are more or less _E_ to this backbone Choose the correct options for the blanks A, B, C, D and E
36.Which form of keratin is present in human hair?
37.An example of competitive inhibition of an enzyme is the inhibition of
38.Given below are two statements A and B. Choose the correct answer related to the statements. Statement A: Amino acids are amphoteric in their function. Statement B: All amino acids are necessary for our body.
39.The β-pleated sheet structure found in proteins is due to
40.Match the following column
41.Biomolecules are constantly being changed into some other biomolecules and are made from
42.Name the four elements called ‘Big-four’ which make up 95% of all elements found in a living system
43.The inhibitor which inhibits the enzyme activity by binding to the active site of the enzyme, due to the close resemblance to the substrate in its molecular structure is called
44.Those nucleic acids which behave like enzymes are known as
45.Which of the two groups of following formula is involved in peptide bond formation between different amino acids?
46.Chemical compounds which are found in the acid insoluble fraction are called
47.What is the approximate percentage of proteins in the cell contents?
48.Which of the following is the example of structural protein?
49.Every chemical (metabolic) reaction is a _ reaction
50.The pyrimidine base, which confers additional stability to DNA over RNA, is