Cellular processes
The cell (from Latin cella, meaning "small room") is the basic structural, functional, and biological unit of all known living organisms. Cells are the smallest unit of life that can replicate indepen...
Cellular processes - Wikipedia
DNA Replication - DNA Polymerase and Helicase Activity Animation
Here you can clearly see the Polymerase activity on both strands.
Mitosis vs. Meiosis: Key Differences, Chart and Venn Diagram | Technology Networks
Mitosis and meiosis are two kinds of cell division that are essential to most forms of life on earth. Here we investigate the key differences and similarities between the two processes.
Immune Cell Migration in the Zebrafish Inner Ear
Immune cells within the perilymphatic space of the inner ear of several zebrafish embryos 80 hpf showing: MIP view of two immune cells (orange), one of which has ingested dextran particles (blue), bef...
A One-Day Starvation Secret Got the Nobel Prize
You probably know that most tissues in your body regularly replace their cells with new ones. Different organs need their own time to renew completely. And some tissues don't replace their cells at al...
Amazing Footage of The Nucleus Spinning During Mitosis
Amazing Footage of The Nucleus Spinning During Mitosis
Here’s How Stanford Scientists Measured the Speed of Death
For the first time ever, scientists at Stanford University have been able to observe the speed at which death spreads across a cell once the self-destruct 'trigger wave' has been initiated. Their conc...
Neurons forming connections in vitro.... - Neuroscience News and Research
Neurons forming connections in vitro. via mymedicalwall
Cell Division Time lapse
Time_lapse of cell division from second cleavage. The animal pole is clearly visible in the upper half of the image. A brief note about the image capture tec...
The science is in: Exercise isn’t the best way to lose weight
Why working out is great for health, but not for weight loss, explained in five minutes.
How a single-celled organism almost wiped out life on Earth
There’s an organism that changed the world. It caused the first mass extinction in Earth’s history … and also paved the way for complex life. How?
New 'Artificial Synapses' Could Let Supercomputers Mimic the Human Brain
Brain-like machines with human-like abilities to solve problems could become a reality, researchers say.
Scientists Find Microbe That Functions Without Mitochondria
Scientists have found the first eukaryotic organism that functions fine without mitochondria, the "powerhouses" that make energy for the cells of yeast, humans and other animals.
Building Living, Breathing Supercomputers
The substance that provides energy to all the cells in our bodies, Adenosine triphosphate (ATP), may also be able to power the next generation of supercomputers. That is what an international team of ...
How Synapses Work
Salk scientists computationally reconstructed brain tissue in the hippocampus to study the sizes of connections (synapses). The larger the synapse, the more likely the neuron will send a signal to a n...
New Research Suggests Cocaine Can Make Brain Cells Eat Themselves
Working with mice, researchers at Johns Hopkins have contributed significant new evidence to support the idea that high doses of cocaine kill brain cells by triggering overactive autophagy, a process ...
Cell signaling
Cell signalling is part of a complex system of communication that governs basic cellular activities and coordinates cell actions. The ability of cells to perceive and correctly respond to their microe...
Cell signaling - Wikipedia
Gene expression
Gene expression is the process by which information from a gene is used in the synthesis of a functional gene product. These products are often proteins, but in non-protein coding genes such as transf...
Gene expression - Wikipedia
DNA repair
DNA repair is a collection of processes by which a cell identifies and corrects damage to the DNA molecules that encode its genome. In human cells, both normal metabolic activities and environmental f...
DNA repair - Wikipedia
Metabolism (from Greek: μεταβολή metabolē, "change") is the set of life-sustaining chemical transformations within the cells of living organisms. These enzyme-catalyzed reactions allow organisms t...
Metabolism - Wikipedia
Cellular respiration
Cellular respiration is the set of metabolic reactions and processes that take place in the cells of organisms to convert biochemical energy from nutrients into adenosine triphosphate (ATP), and then ...
Cellular respiration - Wikipedia
Biosynthesis (also called biogenesis or anabolism) is a multi-step, enzyme-catalyzed process where substrates are converted into more complex products. In biosynthesis, simple compounds are modified, ...
Biosynthesis - Wikipedia
Protein biosynthesis
Protein Biosynthesis refers to the process whereby biological cells generate new proteins; it is balanced by the loss of cellular proteins via degradation or export. Translation, the assembly of prote...
Protein biosynthesis - Wikipedia
Proteolysis is the breakdown of proteins into smaller polypeptides or amino acids. In general, this occurs by the hydrolysis of the peptide bond, and is most commonly achieved by cellular enzymes cal...
Photosynthesis is a process used by plants and other organisms to convert light energy, normally from the Sun, into chemical energy that can be later released to fuel the organisms' activities. This c...
Photosynthesis - Wikipedia
Fermentation is a metabolic process that converts sugar to acids, gases, and/or alcohol. It occurs in yeast and bacteria, but also in oxygen-starved muscle cells, as in the case of lactic acid ferment...
Fermentation - Wikipedia
Cellular transport
A membrane transport protein (or simply transporter) is a membrane protein involved in the movement of ions, small molecules, or macromolecules, such as another protein, across a biological membrane. ...
Membrane transport
In cellular biology the term membrane transport refers to the collection of mechanisms that regulate the passage of solutes such as ions and small molecules through biological membranes, which are lip...
Membrane transport - Wikipedia
Cytosis is a transport mechanism for the movement of large quantities of molecules into and out of cells.There are three main types of cytosis: Endocytosis, exocytosis, and transcytosis.
Cytosis - Wikipedia
Intracellular transport
Intracellular transport is a transport of vesicles and organelles inside the cell.