Cell The Unit of Life Test - 10

A ribosome is a small, dense granular particle comprising usually three or four ribosomal RNA molecules and more than 50 protein molecules, interconnected to form the site of protein synthesis.

The clear zone surrounding Golgi apparatus is zone of exclusion, where no other cellular activity takes place.

Mitochondria is the largest cell organelles in animal cell and chloroplast is the largest cell organelles in plant cell.

A cell membrane shows fluid behavior due to mosaic of lipid and proteins. Fluid mosaic model of plasma membrane is most accepted and recent model.

Chromatin is the thread like structure present in the nucleus. Chromatin have beads like structure called nucleosome that contain histone protein and DNA.

Genetic material is mainly present in nucleus of the cell but these two cell organelles also contain own genetic material.

Nerve cell or neuron is the longest cell in human body. They are responsible for transfer of information from one part of the body to the other in form of nerve impulses.

Pleuro Pneumonia Like Organisms (PPLOs) are considered as smallest free living organism. It do not contain cell membrane or cell wall and present as fluid. It causes disease in plants.

Tonoplasts are the fluid filled vacuoles or vesicles which are separated from cytoplasm by a selectively permeable membrane. It help in maintaining turgidity of the cell.

Secondary wall is formed inside the primary wall. Secondary wall is present nearest to plasma membrane of plant cell.