BlogHide Resteemsovij (57)in science • 7 years agoWhy do we get allergies?Many of us will get allergic reactions in our lifetimes. They can range from a minor irritancy, such as hayfever, to potentially life-threatening conditions, such as anaphylaxis brought on from…ovij (57)in science • 7 years agoRhesus disease – When a mother’s immune system attacks her childSurely a mother’s immune system cannot attack her own, unborn child. A child is part of its mother, it shares her nutrients, her blood supply, her oxygen. How could it be possible? figure 1.…ovij (57)in science • 7 years agoWhat are autoimmune diseases? Why do we get them?What is autoimmunity? The immune system is designed to identify and attack foreign organisms within the body that cause disease ( pathogens ). However, sometimes the recognition process…ovij (57)in science • 7 years agoCreating instant ice – What is supercooled water?Supercooling is the process of chilling a liquid below its freezing point, without it becoming solid. figure 1. Ice cubes In the experiment I conducted (shown below), I placed the water in…ovij (57)in science • 7 years agoHow would you measure the volume of all the blood in your body?How would you go about trying to measure the total volume of blood in the human body? There is one simple solution to this question. Slash open someone at a major blood vessel and drain the blood…resteemedsteemstem (73)in steemstem • 7 years agoIntroducing SteemStem Distilled #1Welcome to the first issue of SteemSTEM Distilled, a curation effort by the members of the @steemstem team. SteemSTEM is a community driven project which seeks to promote well-written and…ovij (57)in science • 7 years agoHow do enzymes catalyse biological reactions?Many of the reactions that occur in the body would happen at remarkably low rates under physiological conditions. In chemistry, a catalyst is used to increase the rate of a given reaction. This is…ovij (57)in science • 7 years agoThe fat that makes you thin – What is brown fat?When most people think of fat, they will probably picture a tyre of flab lingering around the midriff (or something of the sort), much like the image below. This is known as white adipose tissue…ovij (57)in science • 7 years agoHow do cells generate energy?Everyone knows that oxygen is required to live. But, why is that the case? What is it about oxygen that is essential for life? To be able to harness the of energy from nutrients is essential…ovij (57)in science • 7 years agoWhy can’t you hold your breath until you die?Hold your breath for as long as you can. Breath holding kid How long did you last? No more than a few minutes, I would guess. If you try and hold your breath, eventually it becomes…ovij (57)in science • 7 years agoMalignant hyperthermia – An introduction to the pathophysiologyMany of you will have heard of hypothermia, a life-threatening decrease in body temperature. While hyperthermia is the opposite, a dangerous increase in body temperature. However, there are various…ovij (57)in science • 7 years agoHow do muscles contract?Contraction in the simplest sense is shortening of a muscle fibre. When muscles receive stimulation from the nervous system, the required fibres simultaneously shorten to produce a contraction of…ovij (57)in science • 7 years agoIs 99% of our DNA junk?“ Did you know 98.8% of human DNA is just junk? ” “ What do you mean, junk? ” “ It doesn’t code for proteins or contains genes. It just does nothing, has no function, that makes it junk…ovij (57)in science • 7 years agoHow does protein synthesis occur?Proteins are by far the most important macromolecule within the body. What? Proteins are just muscles, aren’t they? Yes and no. All muscles are made up of proteins, but, by no means are all…ovij (57)in science • 7 years agoHow is DNA replicated?Each time a new cell divides, the entire genome must be replicated in an error free manor in order to prevent cancer from arising. With around 3.2 billion base pairs in the human genome, this is no…ovij (57)in science • 7 years agoHow is information transmitted in the nervous system?An action potential is the only means by which a signal can be transmitted along a nerve cell. It is therefore down to these action potentials to communicate not only various stimuli but also their…ovij (57)in science • 7 years agoHow does your heart beat?A human heart will beat around 3 billion times in an average lifetime. The heart works continuously from birth till death, unlike many other muscles which require regular rest to prevent fatigue.…ovij (57)in science • 7 years agoHow do nerves carry electrical impulses so fast?Nerve impulses can travel at up to 119m/s. To put that into perspective, it is faster than a Bugatti Veyron travelling at its full speed (254mph). How is this possible? It comes down to…resteemedocd (77)in ocd • 7 years agoOCD Daily: Issue #50OCD DAILY - Issue #50 Welcome to the 50th issue of @OCD Daily! Issue #50 highlights content from eight (8) flourishing Steemit Content Creators! The OCD team on its journey continues to…ovij (57)in science • 7 years agoHow do nerves conduct electrical impulses?Nerves are just like wires aren’t they? Electrical impulses move through neurones just like electricity flows through a wire, right? No! Absolutely not. Nerves are commonly described…
