The core of plasma membrane is lipid bilayer in fluid phase and protein molecules are distributed in mosaic patterned was established by:
A.Singer and Nicholson B.Gorter and Grendel C.Danilli and Davson D.None of these
Zoology
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Protein molecules bound loosely at the polar surface of lipid layer in plasma membrane of animal cell are:
A.Extrisic B.Intrinsic C.Both (a) & (b) D.None of these
In plasma membrane protein molecules penetrating deeply into lipid layer are:
A.Intrinsic molecules B.Extrinsic molecules C.Both (a) & (b) D.None of these
Which is the correct sequence of composition of plasma membrane in an animal cell:
A.Proteins 42% lipids 32% Carbohydrates 6% and water 20% B.Proteins 32% lipids 42% Carbohydrates 6% and water 20% C.Proteins 52% lipids 22% Carbohydrates 6% and water 20% D.None of these
Carbohydrates link with proteins and fats of plasma membrane form:
A.Glycoproteins B.Glycolipids C.Both (a) & (b) D.None of these
Cell may be regarded a:
A.Only structural unit of organization of living things B.Only functional unit of organization of living things C.Both (a) & (b) D.None of these
Cell division takes place in which of these phases of cell cycle:
A.G1 – phase B.S – phase C.G2 – phase D.D – phase
Intact nuclear membrane, chromatin fibres, double DNA etc, characterize which of these phases:
A.M – phase B.D – phase C.Interphase D.None of these
Clitellum in earthworm includes:
A.Segments 14, 15, 16 B.Segments 5, 6, 7, 8 C.Segments 33, 34, 35 D.Segments 16, 17, 18