How do antibiotics work? Pathogenic bacteria in the body cause infections, which can be treated by antibiotics Bacteriostatic antibiotics slow the growth of bacteria by interfering with the processes the bacteria need to multiply These processes include: DNA replication Metabolism e.g. enzyme activity Protein production Bactericidal antibiotics kill the bacteria, for example by preventing the
Captions are on! Click CC at bottom right to turn off. Get updates from @AmoebaSisters on Twitter and Facebook! I’ll never forget a circular red spot I developed on my arm when I was in elementary school. It left a lasting memory in my mind, because it was something called ringworm and, with my active
Captions are on! Turn off by clicking CC button at bottom right. Follow us on Twitter (@AmoebaSisters) and Facebook! So last weekend, my family bought something pretty cool. Something we’re sure you’ve always wanted. No, it’s not a pony. It’s a rotating compost bin! Yeah! It’s for compost and it rotates. Which is going to
[Music] A war has been raging for billions of years, killing trillions every single day, while we don’t even notice. The war is fought by the single deadliest entity on our planet: the bacteriophage or ‘phage’ for short. [Intro + Music] A phage is a virus; not quite alive, not quite dead. Also, they look
Every second of your life, you are under attack. Billions of bacteria, viruses, and fungi are trying to make you their home. So our bodies have developed a super complex little army with guards, soldiers, intelligence, weapons factories, and communicators to protect you from…well…dying For this video, let’s assume the immune system has 12 different
Our planet’s diverse thriving ecosystems may seem like permanent fixtures, but they’re actually vulnerable to collapse. Jungles can become deserts, and reefs can become lifeless rocks, even without cataclysmic events, like volcanoes and asteroids. What makes one ecosystem strong and another weak in the face of change? The answer, to a large extent, is biodiversity.
magine you were alive back in the 1980’s, and were told that computers would soon take over everything: from shopping, to dating, and the stock market, that billions of people would be connected via a kind of web, that you would own a handheld device, orders of magnitudes more powerful than supercomputers. It would seem