Biomolecules
This test will help the students to revise their topics thoroughly.
Questions
Which among the following amino acids acts as an antioxidant and plays a crucial role in protecting the human body against certain radiations?
- Cysteine
- Glycine
- Glutamine
- Cystine
- Asparagines
Hemocyanins are respiratory proteins of arthropods and mollusks. They belongs to ___________________.
- chromoproteins
- nucleoproteins
- lipoproteins
- glycoproteins
- phosphoproteins
Which of the following fatty acids is a vital component of the cerebral cortex, skin, sperm and testicles in humans?
- Prostaglandins
- Leukotrienes
- Thromboxane A2
- Arachidonic acid
- Docosahexaenoic acid
Sialic acid is a small sugar that is attached to many different proteins on the cell surface. It is a main component of ___________________.
- ceramide
- phytoceramide
- sphingomyelins
- gangliosides
- cerebrosides
The lipid bilayer of cells is composed of ___________________.
- glycerophospholipids
- glycerolipids
- sphingolipids
- prenol lipids
- sterol lipids
Lactose intolerance is the inability of an individual to digest lactose, which is a prominent sugar found in milk. Which among the following statements regarding this disease is false?
- Primary lactase deficiency is caused by the absence of a lactase persistence allele.
- Lactose intolerance is not an allergy.
- Congenital lactase deficiency is an autosomal recessive genetic disorder.
- Secondary lactase deficiency is an inherited genetic disorder.
- Lactose intolerance is caused by insufficient levels of lactase in the lining of the duodenum.
Casein is the predominant protein present in mammalian milk. It is an example of ____________.
- protamines
- albumins
- globulins
- scleroproteins
- metalloproteins
Amit's youngest son is suffering from chronic constipation. Which among the following sugars is a synthetic, non-digestible sugar used in the treatment of chronic constipation?
- Lactulose
- Kojibiose
- Nigerose
- Sophorose
- Melibiose
Which among the following structures regarding the tertiary structure of proteins is incorrect?
- The linear sequence of polypeptide chain is folded into compact globular structure.
- The folding of the polypeptide chain is stabilized by strong noncovalent interactions.
- Electrostatic interactions are present between charged amino acid chains.
- Hydrogen bonds are present in tertiary structure of proteins.
- Hydrophobic interactions contributes to the tertiary structure.
Which of the following monosaccharides is a vital part of a biopolymer found in the bacterial cell wall?
- Sulfoquinovose
- N-Acetylglucosamine
- Sialic acids
- Glucosamine
- Galactosamine
Which of the following is frequently referred to as good lipoprotein?
- Very-low-density lipoproteins
- Chylomicrons
- Intermediate-density lipoproteins
- Low-density lipoproteins
- High-density lipoproteins
The fatty acid identified in human breast milk is ______________________.
- linoleic acid
- gamma-linolenic acid
- eicosapentaenoic acid
- dihomo-γ-linolenic acid
- α-Linolenic acid
In which of the following lipid molecules, the carbon skeleton is bent to form four fused rings which do not contain fatty acids?
- Polyketides
- Saccharolipids
- Waxes
- Steroids
- Phospholipids
The fatty acid found in the fat of ruminants is _________________________.
- oleic acid
- punicic acid
- nervonic acid
- rumenic acid
- α-Parinaric acid
The sugars which are unable to reduce oxidising agents are known as non-reducing sugars. Which of the following is a non-reducing sugar?
- Sucrose
- Glucose
- Galactose
- Lactose
- Maltose