51 results found

Search Results for: mitochondrion

Mitochondrion

Mitochondrion Definition What are mitochondria? The term “mitochondrion” comes from the two words of the Greek... Read More

Mitochondrial DNA

Mitochondrial DNA Definition noun plural: mitochondrial DNAs The genetic material in the mitochondrion that carries code... 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

Mitochondrial DNA not just from moms but also from dads?

If one wants to trace down lineage, that person could turn to the cell's powerhouse, the mitochondrion. This organelle... Read More

Fatty acid

Definition noun plural: fatty acids'' fatty acid, ˈfætɪ ˈæsɪd Any of the group of a long chain of hydrocarbon... Read More

Mitochondrial DNA – hallmark of psychological stress

We often hear that stress can be unsettling as it could make us ill when it becomes chronic and overwhelming. However, is... Read More

Biological Cell Introduction

It only takes one biological cell to create an organism. In fact, there are countless species of single-celled organisms,... Read More

Cristae

Definition noun, singular: crista (cell biology) The infoldings or inward projections of the inner membrane of the... Read More

Pyruvate

Pyruvate Definition Pyruvates have been often recognized as one of the most important molecules that are frequently... Read More

Pyruvic acid

What is Pyruvic Acid? Pyruvic acid is an organic acid that occurs as an intermediate in many metabolic processes. It occurs... Read More

Steroidogenesis

Definition noun, plural: steroidogeneses The biosynthesis of steroid hormones from cholesterol by various cells, such as... Read More

Organelle

The cell is regarded as the structural, functional, and biological unit of all organisms. It is a membrane-bound structure... Read More

Prokaryotic Ancestor of Mitochondria: on the hunt

The alphaproteobacteria have been widely cited as the closest relative-- and possibly the prokaryotic ancestor -- of the... Read More

Chemiosmosis

Chemiosmosis Definition What is chemiosmosis? In biology, chemiosmosis refers to the process of moving ions (e.g. protons)... Read More

Eukaryote

Eukaryote refers to any of the single-celled or multicellular organisms whose cell contains a distinct, membrane-bound... Read More

Glycolysis

What is Glycolysis and Why is it Important? Glycolysis is a metabolic pathway by which the 6-carbon molecule of glucose is... Read More

Selectively-permeable membrane

Selectively Permeable Membrane Definition We can define selectively permeable membranes as those that are selectively... Read More

Adenosine triphosphate

Adenosine Triphosphate Definition noun plural: adenosine triphosphates (biochemistry) An organic compound that is... Read More

Organism

An organism refers to a living thing that has an organized structure, can react to stimuli, reproduce, grow, adapt, and... Read More

Cell Structure

The interior of the cell is divided into the nucleus and the cytoplasm. The nucleus is a spherical or oval-shaped structure... Read More

Transit peptide

Definition noun An extra peptide at the amino terminus of a nascent protein that prompts the transport mechanism of the cell... Read More

Chemiosmotic coupling hypothesis

Definition noun A theory postulated by the biochemist Peter Mitchell in 1961 to describe ATP synthesis by way of a proton... Read More

Chloroplast DNA

Definition noun plural: chloroplast DNAs DNA in the chloroplast that carries the code for proteins and RNAs essential to... Read More

Krebs cycle

Definition noun A cycle of reactions catalyzed by enzymes in which the pyruvate derived from nutrients and converted to... Read More

Cell Respiration

As mentioned in the previous tutorial on ATP, the process of respiration is split into 3 distinct areas that occur at... Read More

Endomembrane system

Ever wondered how biomolecules are made within the cell and then they are released outside the cell for use by the body?... Read More

Malate

Definition noun An ester or a salt of malic acid Supplement Malate is the ionized form (an ester or a salt) of malic acid.... Read More

The Evolution of Cell Organelles

The previous tutorial page noted the emergence of protists, organisms that possessed a distinct cell nucleus and contained... Read More

Plant Cells vs. Animal Cells

Plant Cells Most cells are not visible with the naked eye. However, with microscopes of various types, plant cells can be... Read More

Kinetoplastid

Definition ''noun, plural: kinetoplastids’’ Any of the group of flagellate protozoa, characterized mainly by the... Read More

Chromosome

Chromosomes Definition Chromosomes are the thread-like structure present in the nucleus of plant and animal cells.... Read More

Light-dependent reaction

Many organisms, such as green plants, convert light energy into chemical energy through the mechanism of photosynthesis. In... Read More

Protist

Protist Definition What is a protist? All protists are eukaryotes, i.e. organisms with a nucleus. However, they are... Read More

Eubacteria

Eubacteria are prokaryotic microorganisms consisting of a single cell lacking a nucleus and containing DNA is a single... Read More

Hydrogen

Hydrogen is one of the chemical elements found in nature. A chemical element refers to the pure substance of one type of... Read More

Marker enzyme

Definition noun, plural: marker enzymes Any enzyme confined to a particular organelle, cell, or cellular... Read More

Fermentation

Fermentation Definition What is fermentation? Fermentation is the breaking down of sugar molecules into simpler compounds... Read More

Carbohydrate

Carbohydrate Definition A biomolecule refers to any molecule that is produced by living organisms. As such, most of them... Read More

Glucose

Glucose occurs naturally and is ubiquitous. It is one of the three most common monosaccharides; the other two are fructose... Read More

Biology

Biology Definition Biology is the branch of science that primarily deals with the structure, function, growth, evolution,... Read More