Biochemistry Practice Test_Unit III

An example of a Ketose among the following

• Glucose
• Fructose
• Erythrose
• Mannose

Monosaccharides that differ from each other in their configuration around a single specific carbon atom are called

• Enantiomers
• Epimers
• Rotamer
• Diastereoomer

An example of a non-reducing disaccharide is-

• Maltose
• Lactose
• Galactose
• Sucrose

All the following are giving needle shaped crystals in osazone formation test except

• Glucose
• Fructose
• Mannose
• Lactose

All the following are known as homopolysaccharides except

• Glycogen
• Starch
• Cellulose
• Hyaluronic acid

Starch Contain two polysaccharide units namely,

• water insoluble-amylose, water soluble- amylopectin
• water soluble-amylose, water insoluble-amylopectin
• water soluble – glycan , water insoluble- amylose
• water soluble - amylose ,water insoluble-glycan

The following tests are employed to identify the reducing action of sugars except

• Fehling’s test
• Benedict’s test
• Barfoed’s test
• Iodine test

The glycosidic linkage seen in lactose is

• alpha 1,4

• alpha 1,2

• beta 1,2

• beta 1,4

Fluidity of membranes depends on

• Concentration of proteins

• Nature of the sugar

• glycosylation

• Nature of fatty acids

Km values indicates

• affinity of enzyme for substrate

• maximum velocity

• specificity of substrate

• saturating concentration of substrate