General
✓✗The positional information in a protein refers to
- the 3-dimensional folding of the chain
- which amino acid is first, second and so on
- the number of subunits
- the helical regions only
General
✓✗Vinblastin and curcumin are classified as
- pigments
- drugs
- lectins
- toxins
General
✓✗The basic unit of a nucleic acid is the
- nucleoside
- pentose sugar
- nucleoid
- nucleotide
General
✓✗The enzyme that breaks glycosidic bonds of starch is
- amylase
- lipase
- nuclease
- protease
General
✓✗Proteins are heteropolymers because they are made of
- nucleotides and sugars
- glucose units only
- one kind of amino acid only
- different kinds of amino acids
General
✓✗Fatty acids without any C=C double bond are called
- saturated fatty acids
- unsaturated fatty acids
- phospholipids
- essential amino acids
General
✓✗Which of the following is a polysaccharide made of amino sugars?
- Starch
- Cellulose
- Chitin
- Glycogen
General
✓✗The active site of an enzyme is formed when
- the protein backbone folds upon itself, forming crevices or pockets
- the enzyme binds to a nucleic acid molecule
- the substrate has been converted to product
- the enzyme is heated to 80-90 degrees C
General
✓✗Transfer RNA (tRNA) is a polymer of
- deoxyribonucleotides
- ribonucleosides
- amino acids
- ribonucleotides
General
✓✗Which of the following is a homopolymer of glucose?
- Cellulose
- RNA
- Protein
- DNA
General
✓✗Which one of the following is a non-reducing carbohydrate?
- Sucrose
- Maltose
- Lactose
- Ribose 5-phosphate
General
✓✗Coenzymes are
- inorganic metal ions
- the protein part of enzymes
- organic compounds
- substrates of enzymes
General
✓✗Which compound is formed when adenosine is esterified with a phosphate?
- Adenylic acid
- Guanosine
- Alanine
- Adenine
General
✓✗The bond between two amino acids in a protein is the
- ester bond
- phosphodiester bond
- glycosidic bond
- peptide bond
General
✓✗In the reaction S reduced + S' oxidised -> S oxidised + S' reduced, the enzyme belongs to the class
- transferases
- oxidoreductases
- ligases
- lyases