There are currently about 1044 O2 molecules resident in the atmosphere, all made by the OEC, and the time required for the OEC to make O2 from H2O is shorter by a factor ∼ 1020 than the duration of its presence on the planet. This difference in scale highlights a property of ...
What is the most important role that carbohydrates play in living organisms on Earth? How do enzymes help living things carry out chemical reactions? What are molecules and how are they important for life? How do behaviors help animals maintain homeostasis?
The “skin”is there because water molecules (分子) are drawn to each other. Most of the time, gravity is too strong and it breaks the “skin”. But with zero gravity in space, the “skin” stays strong and the water ball will not break.Water in space acts differently from water on...
This can never happen on Earth. WhyWe need to first understand the surface tension (表面张力) of water. It is like a “skin” of water. The “skin” is there because water molecules (分子) are drawn to each other. Most of the time, gravity is too strong and it breaks the “skin...
What are the three most important monosaccharides? Monosaccharides: A monosaccharide is a type of carbohydrate molecule, also known as a sugar. Carbohydrates are organic molecules that are made of carbon, hydrogen and oxygen. They are needed as an energy source by living organisms. Plants make one...
For many years, scientists couldn't figure out how atoms and molecules on the Earth combined to make living things. Plants, fish, dinosaurs, and people are made of atoms and molecules, but they are put together in a more complicated way than the molecules in the primitive ocean. What's ...
Operating in female-led socialsystems, bonobos are capable of showing a wide range of what were long held as human-specific feelings and emotions, such assensitivity, patience, compassion, kindness,empathyandaltruism. They're also perhaps the most promiscuous non-human species on the planet. While...
Carbon is the most essential of elements in forming organic molecules; indeed, life on Earth has been referred to as "carbon based" because of the prevalence of carbon in forming essential compounds for organisms. Carbon is so prevalent in organic compounds because of its ability to form up to...
Such advanced imaging technologies are especially important for complex molecules, i.e., asymmetric tops without any rotational symmetry, which is the case for almost all molecules on earth. Thus it is of utmost importance to develop laser alignment into a practical tool for such molecules. This ...
The H2O sample was generated in a supersonic beam, with a rotational temperature estimated to be about 10 K. The H2O molecules were photoexcited to different Rydberg states27(see Supplementary Fig.2and Supplementary Note2). The dissociated H atom fragments were then detected using the HRTOF tech...