Rough endoplasmic reticulum Smooth endoplasmic reticulum 1. They have ribosomes attached on their surfaces. They do not have ribosomes attached on their surfaces. 2. RER manufactures proteins and transports them…
Diffusion Osmosis 1. It occurs in any medium. It occurs in liquid medium only. 2. Diffusing molecules may be solid, liquid or gaseous solutes. It involves movement of solvent molecules…
Bacterial cell Onion peel 1. Size is small (1-10 mm). Size is larger (5-100 mm). 2. Nucleus is absent. Nucleus is present. 3. It is a prokaryotic cell. It is…
Chromatin is a thin thread-like structure which is composed of DNA (deoxy ribonucleic acid) and proteins to form a rod-like chromatid. Two similar chromatids attach to a centromere to form…
When salt is added, a hypotonic medium is created, i.e., the concentration of salt molecules is more outside the vegetables than inside. Hence, due to osmosis water from the vegetables…
An organism is made up of various organ systems like digestive system, nervous system, etc. These organ systems in turn are made up of various organs which are made up…
Asters are two star-like structures radiating fibres from the centrosome. They help in locating spindle and trigger cleavage of cytoplasm. Spindle fibres are formed from microtubules during cell division. They…
The pores present on the nuclear membrane allow transport of water-soluble molecules across the nuclear envelope. RNA and ribosomes move out of the nucleus, whereas carbohydrates, lipids and proteins move…
The main function of Golgi bodies is to release proteins or enzymes by vesicles. No other organelle has this property. Therefore, these are largely present in secreting cells.
Animals do not have rigid walls because cell walls are incompatible with the way in which an animal moves and grow. The flaccid cell membrane provides the animal cell freedom…