Classification.The following are chemical functional groups that may be part of a biologically active molecule.Answer the questions by matching the items with the most appropriate group.
a.-COOH
b.-CH3
c.-NH2
d.-OH
e. 
f.-PO43-
g.-CHO
-the group that is acidic
Definitions:
Cash Flows
The entire scope of capital flow inbound and outbound of an enterprise, distinctly affecting its cash availability.
Discount Rate
The discount rate in discounted cash flow analysis that’s used for the purpose of evaluating the present worth of future cash flows.
Present Value
The current value of a future sum of money or stream of cash flows given a specified rate of return, used in discounting to assess investment opportunities.
Per Year
A term used to specify the occurrence or calculation of something on an annual basis.
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