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1,000 grams are equal to 1 kilogram. You can write it like this: 1,000 grams = 1 kilogram 1 gram is very light. A paperclip might have a mass of just one gram. Kilograms are used for heavier items.
Gram-negative bacteria's thick outer membrane prevents entry of toxic molecules, including antibiotics. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases ...