Which of the following statement is false regarding proteins?
1. A protein is heteropolymer and not a homopolymer
2. Collagen is the most abundant protein in the animal world
3. RuBisCO is the most abundant protein in the whole biosphere
4. The first amino acid in the polypeptide chain is called as C-terminal amino acid and the last amino acid is called as N-terminal amino acid
Which of the following is present in acid insoluble fraction?
1. Glucose
2. Fructose
3. Alanine
4. Lipid
Which of the following secondary metabolites is a polymeric substance?
1. Ricin
2. Monoterpenes
3. Curcumin
4. Rubber
Which of the following is the most abundant element present in human body?
1. Carbon
2. Hydrogen
3. Oxygen
4. Nitrogen
Which of following is a secondary metabolits as well as a drug?
1. Concanavalin A
2. Vinblastine
3. Diterpenes
4. Ricin
Chitin present in the exoskeletons of arthropods is
1. Protein
2. Polysaccharide
3. Lipid
4. Derived monosaccharide
The 3' - 5' phosphodiester linkages inside polynudeotide chain serve to join
1. One DNA strand with the other DNA strand
2. One nucleoside with another nucleoside.
3. One nucleotide with another nucleotide
4. One nitrogenous base with pentose sugar
All enzymes are proteins except
1. Trypsin
2. Pepsin
3. Steapsin
4. Ribozyme and Ribonuclease-P
Study the reaction given below
In absence of any enzyme this reaction is very slow, with 200 molecules of H2CO3 formed in one hour. In presence of an enzyme the reaction speeds up dramatically with about 600,000 molecules formed every second. Name the enzyme which has accelerated up the reaction by 10 million times.
1. Ribozyme
2. Carbonic anhydrase
3. Catalase
4. Peroxidase
Which of the following set of coenzymes are nucleotides of vitamin niacin ?
1. NAD, NADP
2. FMN, FAD
3. ATP, ADP
4. ATP, FAD