Of course, the most obvious and possibly most important benefit of a mister is that it allows you to enjoy your outdoor space regardless of how hot it is. What's the meaning of to make both ends meet? to have just enough money to buy the things that you need. Many students are ...
influenced by the movements of the chemical molecules around them.”可知，细菌是如此微小，以至于周围化学分子的活动会对它们产生影响。以及本段最后一句中“They are pushed here and there…with the watery molecules.”可以推断出，细菌之所以弹往各个方向，是因为受到了水分子的“撞击”，故正确答案为A...
What is the meaning of neurochemistry and how it is used to research the organic compounds in the nervous system?HOw the CNS functions:The central nervous system (CNS) is composed of billions of neuronal cells, such as neurons, astrocytes, oligodendro...
The twist of a DNA double helix corresponds to the angular rotation that is needed to get from one base pair to the next. In an idealized DNA molecule, the twist is 36 degrees, meaning that if you rotate one base pair by 36 degrees and move it up...
The location of atoms and molecules in a crystal can be considered as space quanta, because only specific sites can be accessed. So the definition of a "quantum" as a "wave" is wrong. A particle may be a quantum if it builds up a specific unit, as for example the quarks can be con...
What is the meaning of Valent? Definition of -valent 1 :having a (specified) valence or valences bivalentmultivalent. 2 : having (so many) chromosomal strands or homologous chromosomes univalent. Why is carbon valency 4? The valency of carbon is 4. ...
What is the meaning of the term isoelectronic? Which neutral atom is isoelectronic with iodide,I?Write one sentence to explain your answer.(2pts) Which of the following atoms is paramagnetic in its ground state?(1pt) a)Ne ...
number (6.02214076 × 1023) is the number of molecules that constitutes the atomic weight of a molecule in grams (g). For example, water is two hydrogen atoms with a weight of 1 g each and one oxygen atom with a weight of 16 g, meaning that one mole of water molecules weighs 18 g...
Now, in the past, molecules have been defined as those particles that were solely bonded through covalent bonds, meaning bonding that occurs through the sharing of electrons. In the case of O3, for example, an ozone molecule, the three oxygen atoms that compose that molecule are bonded in a...
But come now. Is there really any conceptual problem when we talk about protein molecules orchestrating cell functions? Or molecular intermediates in surface catalysis? Of course not. Rather, this is surely just an example of the problem of ‘natural kinds’, debated by the philosophers of scienc...