3 BIOLOGICAL MOLECULES ( UHS )

Q.1 The covalent bond formed between two monosaccharides is called

Q.2 The bond formed between glucose and fructose form sucrose is

Q.3 In an amino acid in which the R-group is H, its name will be

Q.4 Fatty acid are the organic compounds containing hydrogen, oxygen and one of the following are

Q.5 The combination of a pentose sugar with a base result in a compound is known as

Q.6 An enzyme and substrate reacts through a special feature or site present in enzyme:

Q.7 The non-protein part of enzyme which is covalently and permanently bonded is called

Q.8 One of the pyrimidine bases is absent in DNA

Q.9 Enzymes increase the rate of reaction by

Q.10 Carbohydrates are organic molecules and contain three elements

Q.11 Which one are intermediates in respiration and photosynthesis both?

Q.12 Which of the following is a peptide bond?

Q.13 Which of the following is an unsaturated fatty acid?

Q.14 Which of the following combination of base pair is absent in DNA?

Q.15 The type of inhibition in which inhibitor has no structural similarity to substrate and combines
with enzyme at other than the active site is called

Q.16 The inhibitors that bind tightly and permanently to enzymes and destroy their globular structure
and catalytic activity are

Q.17 Enzyme succinate dehydrogenase converts succinate into

Q.18 If the detachable co-factor is an inorganic ion then it is designated as

Q.19 ______ is most abundant carbohydrate in nature.

Q.20 Which of the following is a keto sugar:

Q.21 Amino acid in which the R-group is hydrogen is:

Q.22 Acyl-glycerols like fats and oils are esters formed by condensation reaction between:

Q.23 Which of the following is purine:

Q.24 If the co-factor is covalently or tightly and permanently bonded to enzyme then it will be called:

Q.25 Optimum pH value for the working of pancreatic lipase is:

Q.26 The view that active site of an enzyme is flexible and when a substrate combines with it, cause
changes in enzyme structure is known as:

Q.27 All coenzymes are derived from:

Q.28 The most common respiratory substrate as a source of energy is

Q.29 The simplest monosaccharide containing keto group is

Q.30 If the genetic code is made up of three nucleotides, then total possible genetic codes will be

Q.31 Waterproof surfaces like cuticle of leaf and protective covering of an insect’s body are

Q.32 In translation the terminating codon is

Q.33 All co-enzymes are derived from

Q.34 The competitive inhibitors have structural similarity with

Q.35 Which one of the following is the optimum pH of pancreatic lipase enzyme?

Q.36 A co-factor tightly bound to the enzyme on the permanent basis is called

Q.37 Monosaccharides are major components of:

Q.38 Blood group antigen contains:

Q.39 Myosin is a __________ type of protein.

Q.40 Which one of the following is an example of unsaturated fatty acid?

Q.41 Number of base pairs in one turn of DNA is:

Q.42 Which molecular structure of enzyme is essential for activity of enzyme?

Q.43 Some enzymes require helper which is non-protein part for its efficient functioning that is called:

Q.44 Pepsin, protein digesting enzymes, sets best pH:

Q.45 Which one of the following is an example of competitive inhibitor?

Q.46 The compounds which on hydrolysis yield polyhydroxy aldehyde or ketone subunits are:

Q.48 Secondary structure of protein is found in:

Q.49 Waxes are formed by combination of fatty acids with:

Q.50 Phosphodiester bond is:

Q.51 An enzyme required Mg++ to catalyze the substrate. The Mg++ is best identified as:

Q.53 According to _________ model the active site of enzyme is modified as the substrate interacts with enzyme.