Plasma membrane: Definition and Composition

Definition of Plasma membrane A plasma membrane is defined as a covering or envelope which encloses almost all types pf cells whether it is plant or animal. It is also known as the cell membrane, cytoplasmic membrane or cell or plasma lamella. The term Cell membrane was coined by Nageli and Carmer 1855. Composition of … Read more

Virus difference: animal, plant, & bacteriophage

virus difference

Difference between animal, plant virus, and bacteriophage Viruses are very small even smaller than bacteria and are mainly parasitic in nature. Depending upon the host, they are widely categorized under three different types namely animal, plant viruses, and bacteriophage. Although all of them have basic similarities depending on the host type and genetic material these … Read more

Types of viruses: structure, classification and reproduction

virus types

Introduction There is no nomenclature system for virus classification since they are not considered truly living. As we all know that living organisms have a definite cellular structure. That raises an interesting question of what actually viruses are. And what are the types of viruses and their structure? Viruses are named according to the type … Read more

Types and simple definition for viruses and structure

virus definition

Virus definition In Latin, the word virus means poisonous or venomous fluid coined by Dmitri Ivanowsky (1892). He recognized certain microbes causing mosaic diseases of tobacco are smaller than that of bacteria. These are very very minute submicroscopic biological entities. Thus, definition for viruses is that it does not have any cellular organelles but definitely … Read more