STD 11 - 3. Plant kingdom — NEET STD 11 Science — Question

The cellular role for lysosome is not

In angiosperms, __________ could be used to study the various stages of meiosis.

What is correct

How many statements are not true for structure of protein ?
(i) The long linear protein chain is called primary structure.
(ii) The first amino acid is also called as C-terminal amino acid and the last amino acid is called the N-terminal amino acid.
(iii) A protein thread is folded in the form of a helix in secondary structure.
(iv) The long protein chain is also folded upon itself like a hollow woollen ball, giving rise to the tertiary structure.
(v) Tertiary structure is absolutely necessary for the many biological activities of proteins.
(vi) Some proteins are an assembly of more than one polypeptide or subunits and give rise to quaternary structure of a protein.

Efficiency index in the exponential phase of geometrical growth is the ability of plants to produce.

Select the correct match :

(A) Fallopian tubes tied and cut	Tubectomy
(B) Vas deferens tied and cut	Vasectomy
(C) A type of contraceptive	Lactational Amenorrhea
(D) In-vitro fertilisation	Fusion of gametes within the female

Eli Lilly an American company is famous for

Enzymes generally have