A phosphoglyceride is always made up of

• only a saturated fatty acid esterified to a glycerol molecule to which a phosphate group is also attached

• only an unsaturated fatty acid esterified to glycerol molecule to which a phosphate group is also attached

• a saturated or unsaturated fatty acid esterified to a glycerol molecule to which a phosphate group is also attached

• a saturated or unsaturated fatty acid esterified to a glycerol molecule to which a phosphate group is also attached

12.

Pigment-containing memberanous extensions in cyanobacteria are

• heterocysts

• basal bodies

• pneumatophores

• pneumatophores

A major site for synthesis of lipids is 

• RER

• SER

• symplast

• symplast

The complex formed by a pair of synapsed homologous chromosomes is called

• equatorial plate

• kinetochore

• bivalent

• bivalent

The most abundant intracellular cation is

• Na⁺

• Ca²⁺

• H⁺

• H⁺

During seed germination its stored food is mobilised by

• ethylene

• cytokinin

• ABA

• ABA

Which of the following criteria dows not pertain to facilitate transport?

• Requirement of special membrane proteins

• High selectivity

• Transport saturation

• Transport saturation

The first stable product of fixation of atmospheric nitrogen in leguminous plants is

• NO₂^-

• ammonia

• NO₃^-

• NO₃^-

Which of the metabolites is common to respiration mediated breakdown of fats, carbohydrates and proteins?

• Glucose-6-phosphate

• Fructose 1, 6-biphosphate

• Pyruvic acid

• Pyruvic acid

Meiosis takes place in

• Meiocyte

• Conidia

• Gemmule

• Gemmule