Cell Structure and Function

From microscopic bacteria to towering giant Sequoias, the biotic components of the environment include all forms of life on the planet. At the microscopic level, however, all living organisms are composed of the same fundamental building block the cell. Thus, the cell is referred to as the structural and functional unit of all living organisms […]

Introduction The biotic components of the environment encompass all kinds of life, from microscopic bacteria to towering giant Sequoias. At the microscopic level, however, all living species are composed of the same fundamental building block – the cell. Thus, the cell is referred to as the structural and functional unit of all living organisms because

All cells can be divided into one of two broad classifications. Single-celled organisms belonging to the domains Bacteria and Archaea are classified as prokaryotes; the term “pro” refers to before and “kary” refers to the nucleus. Animals, plants, fungi, and protists are all classified as eukaryotes (the word eukaryotes means true) and are composed of

Almost every living organism we see around us breathes and respires for survival. Despite the diversity in biological characteristics, the molecular reactions involved in respiration are largely the same.Simply put, the process of glycolysis is the breakdown of glucose, which can occur with or without the presence of oxygen. In the presence of oxygen, glycolysis

The primary distinction between Euchromatin and Heterochromatin is that Euchromatin is an uncoiled packed form of chromatin that is genetically active. While heterochromatin is a tightly packed version of the chromosomes that is genetically inactive. Under a light microscope, the non-dividing cells of the nucleus are divided into two zones based on the concentration or

Humoral immunity : Immunology is the study of the molecular and cellular components that make up the immune system, as well as their function and interaction. Invertebrates have two immune systems: an innate immune system and an acquired or adaptive immune system, both of which contain humoral and cellular immunological elements Humoral immunity refers to the

Robert Brown identified and described nuclei in plant cells in 1833 and they were immediately recognised as a continuous characteristic of all animal and plant cells. M.J. Schleiden mentioned nucleoli in 1838, but Fontana was the first to notice those (1781). Bowman invented the word nucleolus in 1840. The nucleus is the cell’s heart. Nearly

Robert Brown identified and described nuclei in plant cells in 1833, and they were immediately recognized as a continuous characteristic of all animal and plant cells. M.J. Schleiden mentioned nucleoli in 1838, but Fontana was the first to notice those (1781). Bowman invented the word nucleolus in 1840. The nucleus is the cell’s heart. Nearly

The basic building or unit of life is known as a “cell”. Robert Hooke in 1665 discovered a cell from a cork cell. Lee Wenhoek in 1674 discovered cells from living cells in pond water, and in 1833 Robert Brown coined the term nucleus. The nucleoid is majorly composed of copies of DNA, with the

The two types of white blood cells found in blood are granulocytes and agranulocytes. Leukocytes are another name for white blood cells. They are the first line of defence in the battle against disease. Granulocytes include eosinophils, neutrophils, and basophils. Agranulocytes are monocytes and lymphocytes. The most active phagocytes are neutrophils and monocytes, which engulf