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epithelial tissue
That is -ase. Enzymes are one type of proteins; enzymes have groups too. Proteases are enzymes that break down proteins.
The mass number of an isotope indicates the total number (the sum) of protons and netrons in an atom.The number of protons is determined by the atomic number.The number of neutrons can be found by subtracting the atomic number from the mass number.
Carbonic acid has the formula H2CO3. Each capital letter indicates a different element. Therefore, there are free different elements present: hydrogen, carbon and oxygen.
The letter "H" on a weather map indicates the center location of a high-pressure system on US maps. Likewise, "L" marks the center of a low-pressure system.
A
it indicates where the letter originates and when it was written
it indicates where the letter originates and when it was written
Z
D
orbital shape
The tenth digit (or letter) indicates the year model. The letter "D" indicates the motorcycle is a 1983 model. - from Wikipedia
R indicates a river
Written as a Roman numeral, the number 6 would be expressed as VI. The letter V indicates the number 5 and the letter I indicates the number 1. When the letter I is written after the letter V in Roman numerals it indicates that 1 should be added to the number written before it.
The letters under the date on some pennies indicates which US Mint branch made the coin. The letter "D" indicates the Denver, Colorado Mint, the letter "S" indicates the San Francisco, California mint and no letter at all indicates the coin was struck at the US Mint in Philadelphia, Pennsylvania.
variable
B