Denaturation involves protein unfolding, i.e., disruption of higher orders of protein structure, secondary, tertiary and quaternary structure (if present), the primary structure remains intact.
Protein Structure, Unfolding, and Misfolding Read More »
Case details A boy was born normal but started flinching at loud noises (enhanced startle response) at the age of 6 months. The child initially could sit up but then regressed so that he could not roll over or recognize his parents. Ophthalmological examination revealed a central red area of the retina surrounded by white
Tay-Sachs disease- a case based discussion Read More »
Case Details A 25 –year-old woman presents, with a history that includes- a) Hepatosplenomegaly with eventual removal of the spleen b) Bone and joint pains with several fractures of the femur. c) A liver biopsy that shows wrinkled-looking cells with an accumulation of Glucosyl ceramide, What would be the likely diagnosis for this patient? Case
Case study- Gaucher disease Read More »
Q.1- Which one of the following characteristics of phospholipids is correct? A. They always contain choline and glycerol B. They are an important source of energy during fasting C. They are major components of membranes D. They are uncharged at physiological pH E. They are water-insoluble. Details The correct answer is -C. The phospholipids are
Characteristics of phospholipids Read More »
Q.1- Endogenously synthesized triacylglycerols are transported from the liver to extrahepatic tissues by which of the following lipoproteins? a) Chylomicrons b) VLDL c) LDL d) HDL Q.2- All of the following have 18 carbon atoms except – a) Linoleic acid b) Palmitic acid c) Linolenic acid d) Stearic acid Q.3- Sphingosine is not present in- a) Cerebrosides
Lipid chemistry- Multiple-choice questions-set-4 Read More »
Q.1- Which out of the following alcohols is used for waxes? a) Cholesterol b) Glycerol c) Cetyl Alcohol d) Sphingol Q.2- Choose the Dienoic fatty acid out of the following- a) Oleic acid b) Linoleic acid c) Linolenic acid d) Stearic acid Q.3- Which of the following lipids is abundantly present in the white
Lipid Chemistry- Multiple-choice questions-set-3 Read More »
Q.1- Which of the following lipids is a charged lipid? a) Phospholipid b) Cholesterol b) Triacylglycerol d) Glucocerebroside Q.2- Choose the ω9 fatty acid out of the following- a) Oleic acid b) Linoleic acid c) Linolenic acid d) Stearic acid Q.3- Choose the incorrect statement about fatty acids out of the following- a) The melting
Lipid chemistry- Multiple-choice questions-set-2 Read More »
Q.1- Which of the following is a storage form of lipid? a) Phospholipid b) Glycolipid c) Triacylglycerol d) Sulfolipid Q.2- Choose the monounsaturated fatty acid out of the following- a) Oleic acid b) Linoleic acid c) Linolenic acid d) Stearic acid Q.3- Choose the correct statement about fatty acids out of the following- a) The
Lipid chemistry- Multiple-choice questions (set-1) Read More »
1) – A mutation has changed an isoleucine residue of a protein to glutamic acid; which statement best describes its location in a hydrophilic exterior? a) On the surface, since it is hydrophilic b) Inside the core of the protein since it is hydrophobic c) Anywhere inside or outside d) Inside the core of protein
Protein chemistry- Multiple-choice questions- set-2 Read More »
Q.1- The alpha helix rises per turn a distance of which of the following? a) 0.54 nm b) 1.5 nm c) 3 nm d) 1.83 nm Q.2- Which is an antibiotic peptide out of the following? a) Bleomycin b) Penicillin c) Microcystin d) Creatine Q.3- Which protein out of the given has a length: width
Protein Chemistry-Multiple-choice questions Read More »
