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A mnemonic is a memory aid used to improve long-term memory and make the process of consolidation easier. Many chemistry aspects, rules, names of compounds, sequences of elements, their reactivity, etc., can be easily and efficiently memorized with the help of mnemonics.
The most known chemical elements whose covalent combinations make up most biological molecules on Earth. [2] All of these elements are nonmetals.. In animals in general, the four elements—C, H, N, and O—compose about 96% of the weight, and major minerals (macrominerals) and minor minerals (also called trace elements) compose the remainder.
Quizlet is a multi-national American company that provides tools for studying and learning. [1] Quizlet was founded in October 2005 by Andrew Sutherland, who at the time was a 15-year old student, [ 2 ] and released to the public in January 2007. [ 3 ]
An artificial cell, synthetic cell or minimal cell is an engineered particle that mimics one or many functions of a biological cell. Often, artificial cells are biological or polymeric membranes which enclose biologically active materials. [ 1 ]
The user can design cards that test the information contained in each note. One card may have a question (expression) and an answer (pronunciation, meaning). By keeping the separate cards linked to the same fact, spelling mistakes can be adjusted against all cards at the same time, and Anki can ensure that related cards are not shown in too ...
S 0 + hν → S 1 S 1 + S 1 → S 0 + S n S 1 + S n → M + + M −. where S 0 is the ground electronic state, S 1 the first electronic excited state, and S n is a higher electronic excited state. [40] The product ions can be proton transfer or electron transfer ion pairs, indicated by M + and M − above. Secondary processes involve ion ...
Argonautes are needed for miRNA-induced silencing and contain two conserved RNA binding domains: a PAZ domain that can bind the single stranded 3' end of the mature miRNA and a PIWI domain that structurally resembles ribonuclease-H and functions to interact with the 5' end of the guide strand. They bind the mature miRNA and orient it for ...
This method works very well for circular plasmid DNA. Non-commercial preparations should normally give 10 6 to 10 7 transformants per microgram of plasmid; a poor preparation will be about 10 4 /μg or less, but a good preparation of competent cells can give up to ~10 8 colonies per microgram of plasmid. [60]