Cell Structure and Functions

Endoplasmic reticulum is continuous with the cell membrane on the outside and the nuclear membrane on the inside. It is the supportive framework of a cell.

Lysosomes are known as suicidal bags. They digest cartilages during the formation of bones.

They store water and other substances like food, pigments and waste products. They provide turgidity to the plant cell.

Neuron is the cell specialised for receiving and transferring messages.

Cisternae are the flattened, disc-like, membrane-bound sacs that comprise the Golgi apparatus (also called Golgi complex or Golgi body). They are stacked together and function in processing, packaging, and modifying proteins and lipids synthesized in the endoplasmic reticulum. The Golgi apparatus is not found in mitochondria (powerhouse of cell), chloroplasts (site of photosynthesis), or nucleolus (site of ribosome synthesis).

A short phase found in between meiosis I and meiosis II during gamete formation is interkinesis.

Strong agitation methods are required

Endocrine signals are called hormones. Hormones are produced by endocrine cells and they travel through the blood to reach all parts of the body.

It helps to observe cell division

Colchicine inhibits the integration of tubules needed for spindle formation.

Its main function is cell secretion and also helps in carbohydrate synthesis in which sulfation process occurs

It is the movement according to the presence of certain chemicals in environment.The sperm identifies the chemical secreted by egg and moves towards it

Crossing over takes place at a stage between zygotene and diplotene. Crossing over is the exchange of genes between two chromosomes, resulting in non-identical chromatids that comprise the genetic material of gametes (sperm and eggs).

Cell division is performed by all the organisms, be it unicellular or multicellular.