12 results for “acid”
Chemistry
Acids and Bases
acids and bases. What makes an acid An acid is a substance that releases hydrogen ions
Article · 3 min read
The Human Body
Digestion
acids and fatty acids, that can be absorbed and then rebuilt into you. It happens along
Article · 4 min read
Chemistry
The Chemistry of Life
acids: the instructions DNA and RNA are nucleic acids, long chains of units called nucleotides. The order
Article · 3 min read
Life & Biology
The Origin of Life
acids and the bases of DNA. Radio telescopes detect sugars and amino acid precursors in the gas clouds
Article · 4 min read
Life & Biology
DNA and Genes
acid, is shaped like a ladder twisted into a spiral: the famous double helix, worked out in 1953 by James
Article · 4 min read
Planets & the Solar System
Mercury and Venus
acid clouds and crushing heat. Sunward of Earth lie two rocky worlds. Mercury is small, grey
Article · 3 min read
The Human Body
The Immune System
acidic wall that microbes cannot cross unless it is broken. Tears, saliva and mucus contain enzymes
Article · 4 min read
Life & Biology
Bacteria and Viruses
acid, in radioactive waste and in the clouds. There are an estimated five million trillion trillion
Article · 4 min read
Plants & Fungi
Carnivorous Plants
acid and waterlogged; the bacteria that normally recycle dead material cannot work in them, so nitrogen
Article · 4 min read
Life & Biology
What Is Life? The Cell
acids. Mitochondria are the power plants, burning sugar with oxygen to produce the energy currency that
Article · 4 min read
The Human Body
Muscles
acid, which is part of why a sprint burns. Heat is a by-product of all this
Article · 4 min read
Planet Earth
The Oceans
acidic and harder for corals and shellfish to build their skeletons. What we still don't know
Article · 4 min read
