Read the following passage to answer the following questions:
Proteins are polypeptide chains made up of amino acids. There are 20 types of amino acids joined together by peptide bond between amino and carboxylic group. There are two kinds of amino acids, Essential amino acids and Non-essential amino acids. The Primary structure of protein is the linear sequence of amino acids in a polypeptide chain. The first amino acid of sequence is called N-terminal amino acids and last amino acid of peptide chain is called C-terminal amino acids. The secondary structure proteins forms helix. There are three types of secondary structure: a helix, P pleated and collagen helix. In tertiary structure long protein chain is folded upon itself like a hollow woollen ball to give three-dimensional view of protein. In quaternary structure, each polypeptide develops its own tertiary structure and function as subunit of protein.
Q. Glycine and Alanine are different with respect to one substituent on the α-carbon. What are the other common substituent groups?
Read the following passage to answer the following questions:
Proteins are polypeptide chains made up of amino acids. There are 20 types of amino acids joined together by peptide bond between amino and carboxylic group. There are two kinds of amino acids, Essential amino acids and Non-essential amino acids. The Primary structure of protein is the linear sequence of amino acids in a polypeptide chain. The first amino acid of sequence is called N-terminal amino acids and last amino acid of peptide chain is called C-terminal amino acids. The secondary structure proteins forms helix. There are three types of secondary structure: a helix, P pleated and collagen helix. In tertiary structure long protein chain is folded upon itself like a hollow woollen ball to give three-dimensional view of protein. In quaternary structure, each polypeptide develops its own tertiary structure and function as subunit of protein.
Q. The tertiary structure of a protein contains
1 Crore+ students have signed up on EduRev. Have you? Download the App |
Read the following passage to answer the following questions:
Proteins are polypeptide chains made up of amino acids. There are 20 types of amino acids joined together by peptide bond between amino and carboxylic group. There are two kinds of amino acids, Essential amino acids and Non-essential amino acids. The Primary structure of protein is the linear sequence of amino acids in a polypeptide chain. The first amino acid of sequence is called N-terminal amino acids and last amino acid of peptide chain is called C-terminal amino acids. The secondary structure proteins forms helix. There are three types of secondary structure: a helix, P pleated and collagen helix. In tertiary structure long protein chain is folded upon itself like a hollow woollen ball to give three-dimensional view of protein. In quaternary structure, each polypeptide develops its own tertiary structure and function as subunit of protein.
Q. The smallest amino acid is
Read the following passage to answer the following questions:
Proteins are polypeptide chains made up of amino acids. There are 20 types of amino acids joined together by peptide bond between amino and carboxylic group. There are two kinds of amino acids, Essential amino acids and Non-essential amino acids. The Primary structure of protein is the linear sequence of amino acids in a polypeptide chain. The first amino acid of sequence is called N-terminal amino acids and last amino acid of peptide chain is called C-terminal amino acids. The secondary structure proteins forms helix. There are three types of secondary structure: a helix, P pleated and collagen helix. In tertiary structure long protein chain is folded upon itself like a hollow woollen ball to give three-dimensional view of protein. In quaternary structure, each polypeptide develops its own tertiary structure and function as subunit of protein.
Q. There is extensive diversity of protein molecules is due to
Read the following passage to answer the following questions:
Proteins are polypeptide chains made up of amino acids. There are 20 types of amino acids joined together by peptide bond between amino and carboxylic group. There are two kinds of amino acids, Essential amino acids and Non-essential amino acids. The Primary structure of protein is the linear sequence of amino acids in a polypeptide chain. The first amino acid of sequence is called N-terminal amino acids and last amino acid of peptide chain is called C-terminal amino acids. The secondary structure proteins forms helix. There are three types of secondary structure: a helix, P pleated and collagen helix. In tertiary structure long protein chain is folded upon itself like a hollow woollen ball to give three-dimensional view of protein. In quaternary structure, each polypeptide develops its own tertiary structure and function as subunit of protein.
Direction: In the following questions the Assertions (A) and Reasons (R) have been put forward. Read both the statements and choose the correct option from the following:
Assertion : Amino acids are monomers of nucleic acid.
Reason : Protein amino acids have an unlimited variety.
Read the following passage to answer the following questions:
The enzyme molecule operates by chemically binding with the substrate molecule, to form an enzyme-substrate complex. The enzyme's tertiary structure consists of a unique pocket or site on which the substrate molecules can become attached and interact subsequently. This brings about an interaction between the specific active sites in the enzyme molecule and the reactive sites in the substrate molecule. The enzyme now breaks down the substrate into- products. The products initially remain attached to the enzyme for a short while forming an enzyme product complex. The products get released from the enzyme molecule subsequently. The enzyme is now ready to receive another substrate molecule again. Thus, the same enzyme can be used again and again.
Q. Which of the following is the best evidence for the lock and key theory of enzyme reaction:
Read the following passage to answer the following questions:
The enzyme molecule operates by chemically binding with the substrate molecule, to form an enzyme-substrate complex. The enzyme's tertiary structure consists of a unique pocket or site on which the substrate molecules can become attached and interact subsequently. This brings about an interaction between the specific active sites in the enzyme molecule and the reactive sites in the substrate molecule. The enzyme now breaks down the substrate into- products. The products initially remain attached to the enzyme for a short while forming an enzyme product complex. The products get released from the enzyme molecule subsequently. The enzyme is now ready to receive another substrate molecule again. Thus, the same enzyme can be used again and again.
Q. Khosland's model of enzyme action implies that:
Read the following passage to answer the following questions:
The enzyme molecule operates by chemically binding with the substrate molecule, to form an enzyme-substrate complex. The enzyme's tertiary structure consists of a unique pocket or site on which the substrate molecules can become attached and interact subsequently. This brings about an interaction between the specific active sites in the enzyme molecule and the reactive sites in the substrate molecule. The enzyme now breaks down the substrate into- products. The products initially remain attached to the enzyme for a short while forming an enzyme product complex. The products get released from the enzyme molecule subsequently. The enzyme is now ready to receive another substrate molecule again. Thus, the same enzyme can be used again and again.
Q. The complete conjugate enzyme, consisting of an apoenzyme and a cofactor, is called
Read the following passage to answer the following questions:
The enzyme molecule operates by chemically binding with the substrate molecule, to form an enzyme-substrate complex. The enzyme's tertiary structure consists of a unique pocket or site on which the substrate molecules can become attached and interact subsequently. This brings about an interaction between the specific active sites in the enzyme molecule and the reactive sites in the substrate molecule. The enzyme now breaks down the substrate into- products. The products initially remain attached to the enzyme for a short while forming an enzyme product complex. The products get released from the enzyme molecule subsequently. The enzyme is now ready to receive another substrate molecule again. Thus, the same enzyme can be used again and again.
Q. Model of Emil Fisher implies that:
Read the following passage to answer the following questions:
The enzyme molecule operates by chemically binding with the substrate molecule, to form an enzyme-substrate complex. The enzyme's tertiary structure consists of a unique pocket or site on which the substrate molecules can become attached and interact subsequently. This brings about an interaction between the specific active sites in the enzyme molecule and the reactive sites in the substrate molecule. The enzyme now breaks down the substrate into- products. The products initially remain attached to the enzyme for a short while forming an enzyme product complex. The products get released from the enzyme molecule subsequently. The enzyme is now ready to receive another substrate molecule again. Thus, the same enzyme can be used again and again.
Direction : In the following questions the Assertions (A) and Reasons (R) have been put forward. Read both the statements and choose the correct option from the following:
Assertion : Enzyme and substrate respectively have active and reactive sites on their surface.
Reason : Active and reactive sites push the enzyme and substrate molecules away from each other.
Read the following passage to answer the following questions:
Neutral or true fats are esters of fatty acid with glycerol. They are also called glycerol. A fat molecule consists of one molecule of glycerol and one to three molecules of the same or different long-chain fatty acids. Glycerol has 3 carbons each bearing a hydroxyl (OH) group. Whereas fatty acid molecule is an unbranched chain of carbon atoms having a carboxylic group attached to an R group. The R group could be a methyl (-CH3) or ethyl (-C2H5) or higher number of -CH2 groups (C1 to 19-C). eg. Palmitic acid has 16-C. Saturated fatty acid are without double bonds whereas unsaturated fatty acid are with one or more double bonds. Neutral fats may be monoglycerides if there is only one molecule of fatty acid attached to a glycerol molecule. If the number of fatty acids attached is two then it is a diglyceride or triglyceride if it is three. Esters of fatty acid with high molecular weight alcohol are called waxes. Compound lipids are also esters but contain some other substances also. Steroids and prostaglandins are derived lipids.
Q. How many molecules of fatty acids may occur in a lipid molecule?
Read the following passage to answer the following questions:
Neutral or true fats are esters of fatty acid with glycerol. They are also called glycerol. A fat molecule consists of one molecule of glycerol and one to three molecules of the same or different long-chain fatty acids. Glycerol has 3 carbons each bearing a hydroxyl (OH) group. Whereas fatty acid molecule is an unbranched chain of carbon atoms having a carboxylic group attached to an R group. The R group could be a methyl (-CH3) or ethyl (-C2H5) or higher number of -CH2 groups (C1 to 19-C). eg. Palmitic acid has 16-C. Saturated fatty acid are without double bonds whereas unsaturated fatty acid are with one or more double bonds. Neutral fats may be monoglycerides if there is only one molecule of fatty acid attached to a glycerol molecule. If the number of fatty acids attached is two then it is a diglyceride or triglyceride if it is three. Esters of fatty acid with high molecular weight alcohol are called waxes. Compound lipids are also esters but contain some other substances also. Steroids and prostaglandins are derived lipids.
Q. Polyunsaturated fatty acid contain
Read the following passage to answer the following questions:
Neutral or true fats are esters of fatty acid with glycerol. They are also called glycerol. A fat molecule consists of one molecule of glycerol and one to three molecules of the same or different long-chain fatty acids. Glycerol has 3 carbons each bearing a hydroxyl (OH) group. Whereas fatty acid molecule is an unbranched chain of carbon atoms having a carboxylic group attached to an R group. The R group could be a methyl (-CH3) or ethyl (-C2H5) or higher number of -CH2 groups (C1 to 19-C). eg. Palmitic acid has 16-C. Saturated fatty acid are without double bonds whereas unsaturated fatty acid are with one or more double bonds. Neutral fats may be monoglycerides if there is only one molecule of fatty acid attached to a glycerol molecule. If the number of fatty acids attached is two then it is a diglyceride or triglyceride if it is three. Esters of fatty acid with high molecular weight alcohol are called waxes. Compound lipids are also esters but contain some other substances also. Steroids and prostaglandins are derived lipids.
Q. Paraffin wax is
Read the following passage to answer the following questions:
Neutral or true fats are esters of fatty acid with glycerol. They are also called glycerol. A fat molecule consists of one molecule of glycerol and one to three molecules of the same or different long-chain fatty acids. Glycerol has 3 carbons each bearing a hydroxyl (OH) group. Whereas fatty acid molecule is an unbranched chain of carbon atoms having a carboxylic group attached to an R group. The R group could be a methyl (-CH3) or ethyl (-C2H5) or higher number of -CH2 groups (C1 to 19-C). eg. Palmitic acid has 16-C. Saturated fatty acid are without double bonds whereas unsaturated fatty acid are with one or more double bonds. Neutral fats may be monoglycerides if there is only one molecule of fatty acid attached to a glycerol molecule. If the number of fatty acids attached is two then it is a diglyceride or triglyceride if it is three. Esters of fatty acid with high molecular weight alcohol are called waxes. Compound lipids are also esters but contain some other substances also. Steroids and prostaglandins are derived lipids.
Q. Lecithin is a
Read the following passage to answer the following questions:
Neutral or true fats are esters of fatty acid with glycerol. They are also called glycerol. A fat molecule consists of one molecule of glycerol and one to three molecules of the same or different long-chain fatty acids. Glycerol has 3 carbons each bearing a hydroxyl (OH) group. Whereas fatty acid molecule is an unbranched chain of carbon atoms having a carboxylic group attached to an R group. The R group could be a methyl (-CH3) or ethyl (-C2H5) or higher number of -CH2 groups (C1 to 19-C). eg. Palmitic acid has 16-C. Saturated fatty acid are without double bonds whereas unsaturated fatty acid are with one or more double bonds. Neutral fats may be monoglycerides if there is only one molecule of fatty acid attached to a glycerol molecule. If the number of fatty acids attached is two then it is a diglyceride or triglyceride if it is three. Esters of fatty acid with high molecular weight alcohol are called waxes. Compound lipids are also esters but contain some other substances also. Steroids and prostaglandins are derived lipids.
Direction : In the following questions the Assertions (A) and Reasons (R) have been put forward. Read both the statements and choose the correct option from the following:
Assertion : Polyunsaturates are considered good for health.
Reason : They help in reducing blood cholesterol level.
190 videos|388 docs|204 tests
|
190 videos|388 docs|204 tests
|