Cell theory, prokaryotic and eukaryotic cells

Phagocytosis is a process that occurs when a cell attempts to kill foreign particles or pathogens such as bacteria or an infected cell by enveloping them in lytic enzymes, which is a process known as phagocytosis. In addition to single-celled creatures such as amoebas, this process is observed during the digestion of food particles by […]

Cells are the fundamental structural and functional unit of living beings. Two types of cellular organisms exist in nature: Unicellular  Multicellular.  G Loewy and P. Siekevit defined that cells were the basic unit of life in 1963. In 1665 Robert Hook observed that the cells’ structural pattern is like a honeycomb that contains a thick

White blood cells are a type of blood cell that aids in disease resistance. White blood cells are created in the bone marrow by stem cells and are located in the blood and lymph tissue. WBC ( white blood cells)    are also referred to as leukocytes. WBC (white blood cells) has a lifetime of

The term unicellular organism, also known as a single-celled organism, refers to an organism that is made up of only one cell, as opposed to a multicellular organism, which is made up of multiple cells. Generally speaking, unicellular organisms can be divided into two categories: prokaryotic organisms and eukaryotic organisms.  Prokaryotes are unicellular organisms that

In the 1970s and 1980s, ribosomes were discovered to be crucial to life on Earth. They are composed of RNA and proteins, which are necessary for life. These protein synthesis machines use mRNA as their starter material to create proteins. The process of creating a protein is called translation, in which ribosomes read the information

Plasmolysis is the process by which protoplasm shrinks away from a plant’s or bacterium’s cell wall. Water loss via exosmosis frequently causes protoplasmic shrinkage, resulting in gaps between the cell wall and the plasma membrane. Plasmolysis is classified into two types: concave plasmolysis and convex plasmolysis. Concave plasmolysis occurs when the protoplasm and plasma membrane

Plasmolysis is the process by which protoplasm shrinks away from a plant’s or bacterium’s cell wall. Water loss via exosmosis frequently causes protoplasmic shrinkage, resulting in gaps between the cell wall and the plasma membrane. Plasmolysis is classified into two types: concave plasmolysis and convex plasmolysis. Concave plasmolysis occurs when the protoplasm and plasma membrane

Prior to the concept of three domains of cellular life, life on Earth was divided into two groups: Prokaryotae or Monera (which included bacteria) and Eukaryote (which comprised animals, plants, fungi and protists). Carl Woese, an American microbiologist and physicist, proposed the three-domain system biological classification of life in 1990, which divides life on Earth

Introduction The three domains of life are the broadest biological categories for cellular progression. Carl Woese and colleagues proposed the three-domain system in 1990, which separates cellular life forms into archaea, bacteria and eukaryotic domains. The three domains of living things add a classification level to the previously utilized five- or six-kingdom systems. As Archaea

Cancer is a non-infectious disease. Uncontrolled proliferation without differentiation leads to a new growth called neoplasm. Neoplasm growth may indicate the onset of cancer. There are two categories of tumours: benign tumours and malignant tumours.  The characteristics of cancerous cells are: high proliferation no differentiation no contact inhibition highly spreading high invasiveness high tolerance activity