Noun
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the blood group whose red cells carry the A antigen
- type a - group a -
the 1st letter of the Roman alphabet
-
the basic unit of electric current adopted under the Systeme International d'Unites
"a typical household circuit carries 15 to 50 amps"
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(biochemistry) purine base found in DNA and RNA
pairs with thymine in DNA and with uracil in RNA
-
one of the four nucleotides used in building DNA
all four nucleotides have a common phosphate group and a sugar (ribose)
- deoxyadenosine monophosphate -
any of several fat-soluble vitamins essential for normal vision
prevents night blindness or inflammation or dryness of the eyes
- vitamin a - antiophthalmic factor -
a metric unit of length equal to one ten billionth of a meter (or 0.0001 micron)
used to specify wavelengths of electromagnetic radiation
- angstrom unit