Examlex
Define operon and polycistronic mRNA.
Double Coincidence
A term from economics referring to the situation where two parties each hold an item the other wants, enabling an exchange without the need for money.
Goods And Services
Physical items that satisfy human wants (goods) and intangible benefits provided to consumers (services).
Barter
The direct exchange of goods and services without the use of money as a medium.
Rates Of Exchange
The value of one currency for the purpose of conversion to another.
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