Multifarious cell types that make up different tissues of a vascular plant
The cell is defined as the fundamental, functional unit of life. Some organisms are comprised of only one cell whereas others have many cells that are organized into tissues, organs, and systems. The scientific study of the cell is called cell biology. This field deals with the cell structure and function in detail. It covers topics such as DNA replication, protein synthesis, and cell defense.
ATP is the energy source that is typically used by an organism in its daily activities. The name is based on its structure as it consists of an adenosine molecule and three inorganic phosphates. Know more about ATP, especially how energy is released after its breaking down to ADP…
Cell respiration is the process of creating ATP. It is “respiration” because it utilizes oxygen. Know the different stages of cell respiration in this tutorial…
Photosynthesis is the process that plants undertake to create organic materials from carbon dioxide and water, with the help of sunlight- all of which are investigated in this tutorial…
DNA is a double helix structure comprised of nucleotides. A nucleotide, in turn, is made up of phosphate molecule, deoxyribose, and a nitrogenous base. Know the fundamental structure of DNA and the process of DNA replication in this tutorial…
Part of the genetic information is devoted to the synthesis of proteins. mRNA, a type of RNA, is produced as a transcript that carries the code for protein synthesis. Read this tutorial for further details…
The endoplasmic reticulum and Golgi apparatus are the organelles involved in the translation step of protein synthesis and the ensuing post-translational steps. Read this tutorial for more info…
The sequence of amino acids determines the type of protein. Protein is synthesized according to the sequence of nucleotides in the expressed DNA strand. For more info on the different types of proteins, read this tutorial…
Viruses possess both living and non-living characteristics. This unique feature distinguishes them from other organisms. They require other organisms to host themselves in order to survive and as such, they are regarded as obligate parasites. Learn more about viruses and cell assimilation in this tutorial…
Organisms employ different strategies to boost its defenses against antigens. Humans have an immune system to combat pathogens. Read this tutorial to learn the first and second lines of defense that the human body employs. ..
Lymphocytes are a type of white blood cell capable of producing a specific immune response to unique antigens. In this tutorial, learn about these lymphocytes and the mechanisms they employ to defend the body against the same antigens…
Plants protect themselves by releasing hydrogen peroxide to fight against fungal invasion. Another way is by secreting compounds, such as lignin, ethylene, galls, and tannins. Find out how these mechanisms protect the plants from pathogens…
It only takes one biological cell to create an organism. A single cell is able to keep itself functional through its ‘miniature machines’ known as organelles. Read this tutorial to become familiar with the different cell structures and their functions…