Search Results for: role
The role of extinction in evolution
Colloquium Paper Ths paper was presented at a colloquium entled "Tempo and Mode in Evolution" organized by Walter... Read More
Understanding Infertility – The Role of Genes in the Control of Reproduction
The problem of infertility is not confined to humans alone. There has been a noticeable decline in the reproductive ability... Read More
Smooth endoplasmic reticulum
Smooth Endoplasmic Reticulum Definition Smooth endoplasmic reticulum (sER) is (a part of) endoplasmic reticulum that is... Read More
Centrosome
Centrosome Definition What is a centrosome? The centrosome is considered to be the main microtubule-organizing... Read More
Heterotroph
Heterotroph Definition What is a heterotroph? Does a heterotroph make its own food? In biology and ecology, a heterotroph... Read More
Autocrine signaling
Autocrine Signaling Definition What is autocrine signaling? Autocrine signaling is a type of cell signaling wherein a cell... Read More
Group translocation
Group Translocation Definition Just like your “home” is a private place where you and your comfort are maintained due... Read More
Decomposer
Decomposer Definition The organisms that carry out the process of decay or break down of the dead organism are known as... Read More
Biotic factor
Biotic Factor Definition Biotic factors (also known as biotic components) are the living component in an ecosystem. The... Read More
Intercalary meristem
The basic structural framework of plants is composed of different types of tissues. Based upon the capacity to divide, the... Read More
Antagonistic Muscle
Definition of Antagonistic Muscle What does the term “antagonistic” mean? As the name suggests, the word antagonistic... Read More
Protein Variety
The sequence of amino acids determines which type of protein it is. It is synthesized from a DNA strand, each DNA strand... Read More
Fragmentation
Fragmentation Definition What is fragmentation? In general, fragmentation refers to the state or the process of breaking... Read More
Cyclic guanosine monophosphate
Definition noun plural: cyclic guanosine monophosphates (biochemistry) A cyclic form of guanosine monophosphate (chemical... Read More
Plasma membrane
Do all cells have a plasma (or cell) membrane? Yes, all cells have a biological membrane that separates the protoplasm from... Read More
Water in Plants
The movement of molecules, specifically water and any solutes, is vital to understand in light of plant processes. This will... Read More
Realized niche
What is a niche? A niche can be defined as the means by which a species or an individual interacts with its environment. In... Read More
Simple squamous epithelium
Simple Squamous Epithelium Definition Simple squamous epithelium, also known as simple squamous epithelial tissue or... Read More
Physiological adaptation
If we look over evolutionary history, we find that it’s neither the most genius and intelligent nor the strongest and the... Read More
Phosphorylation
Phosphorylation Definition We can define phosphorylation as a biochemical process in which a phosphate molecule is added to... Read More
Sex Reversal – When Males Grew Ovaries Instead of Testes
Summary: Sex reversal is not unusual in some animals, especially in invertebrates. As for the vertebrates, there are... Read More
Plant Cell Defense
Hydrogen Peroxide Plants release hydrogen peroxide in response to the presence of a fungal invasion, which attacks by... Read More
Cellular respiration
Cellular Respiration Definition The main function of cellular respiration is to break down glucose to form energy. What is... Read More
The Psychobiology of Hysteria
Editorial Hysteria is often regarded as the archetypal psychodynamic illness. Freud carried out much of his early work on... Read More
Genetic Control – On and Off Genes
Reviewed by: Mary Anne Clark, Ph.D. This lesson looks at the various factors involved that affect growth and... Read More
Phosphodiester bond
Phosphodiester Bond Definition Phosphodiester bonds are the backbone of the strands of nucleic acid present in the life... Read More
Hyaline cartilage
Hyaline Cartilage Definition Before we define hyaline cartilage, let us understand what cartilage is. What is cartilage? Is... Read More
Recombination DNA repair
Recombination DNA Repair Definition Recombination DNA repair is a biological reparative process in response to DNA damage... Read More
Animal cell
An animal cell is the fundamental functional unit of life of animals. It is also the basic unit of reproduction. Animal... Read More