EVERYDAY SCIENCE

Detailed explanation-1: -After a cell divides, a nucleolus is formed when chromosomes are brought together into nucleolar organizing regions.

Detailed explanation-2: -Centrioles are small organelles found only in eukaryotic cells that help ensure the new cells that form after cell division each contain a complete set of chromosomes. As the centrioles move apart, a spindle starts to form between them.

Detailed explanation-3: -Centrioles are organelles involved in cell division. The function of centrioles is to help organize the chromosomes before cell division occurs so that each daughter cell has the correct number of chromosomes after the cell divides. Centrioles are found only in animal cells and are located near the nucleus.

Detailed explanation-4: -The nucleus is a membrane bound organelle that contains the genetic information in the form of chromatin, highly folded ribbon-like complexes of deoxyribonucleic acid (DNA) and a class of proteins called histones.

Detailed explanation-5: -The nucleus, which is the largest cellular organelle, is surrounded by the nuclear envelope, which acts as a physical barrier between the cytoplasm and the key constituent of the nucleus, chromatin.