Sucrose is NOT a reducing sugar since
- it is chemically stable
- it contains no free aldehyde or keto group adjacent to , $>CHOH$ group
- it is built up of a fructose unit
- it is optically active
The Correct Option is B
Solution and Explanation
Sucrose does not have free aldehyde or keto group adjacent to $> CHOH $ group, therefore it fails towards Tollen's reagent and Fehling solution.
Top Questions on Enzymes
- Streptokinase produced by bacterium Streptococcus is used for:
- Which one of the following enzymes contains 'Heme' as the prosthetic group?
- Describe briefly, the charge relay system that operates in chymotrypsin enzyme.
Match the following
List - A List - B A. Hydrolases I. Argino succinase B. Lyase II. Fructose 1,6 bisphosphatase C. Ligase III. Hexokinase D. Transferase IV. Ribose-5-phosphoisomerase V. Glutamine synthetase The graph showing the concept of activation energy of enzyme is given below. Observe the graph and choose the correct option for M and N.
Questions Asked in KCET exam
A block of certain mass is placed on a rough floor. The coefficients of static and kinetic friction between the block and the floor are 0.4 and 0.25 respectively. A constant horizontal force \( F = 20 \, \text{N} \) acts on it so that the velocity of the block varies with time according to the following graph. The mass of the block is nearly (Take \( g = 10 \, \text{m/s}^2 \)):
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- work, energy and power
- Given, a current carrying wire of non-uniform cross-section, which of the following is constant throughout the length of the wire?
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- If the number of terms in the binomial expansion of \((2x + 3)^n\) is 22, then the value of \(n\) is:
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- Binomial theorem
- Ethyl alcohol is heated with concentrated sulphuric acid at 413 K (140°C). The major product formed is
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- A body of mass 0.25 kg travels along a straight line from \( x = 0 \) to \( x = 2 \, \text{m} \) with a speed \( v = k x^2 \) where \( k = 2 \, \text{m}^{-1} \). The work done by the net force during this displacement is
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- Elastic and inelastic collisions
Concepts Used:
Enzymes
Catalysts of biological systems can be known as Enzymes. Enzymes helps us to perform the huge variety of biochemical reactions that encompass in life are all mediated by a series of activities.
Properties of Enzymes:
Following are the properties of enzymes:
- Enzymes initiate and speed up the reaction
- The enzyme’s activity is ph dependent
- Enzymes have the capacity to forward and reverse the reaction but do not decide the direction of the biochemical pathway
- An enzyme has a particular area on which the substrate interacts to produce the desired product
- Enzyme becomes unstable at varying ph, high temperature and heat
- It have protein like characteristics
- Substrates can be catalyzed with a small number of enzymes
- Enzyme activity represents absolute, relative, group and stereo specificities
- Some enzymes perform regulatory function
- It minimise activation energy (Ea)
- The enzymes remain unaffected before and after the product formation and it can be reused
- They are soluble both in water and NaCl.