Bioengineering and biomedical engineering merge the disciplines of engineering, biology, and medicine to create techniques and devices that are based on an understanding of living systems and serve the objective of improving the quality of human and animal life.
Weight of 1 US Gallon of water = approx. 8.35 lb (about 3.785 kg). Weight of 1 Imperial gallon (i.e. UK measure) of water weighs 10 pounds (4.536 kg) by definition, at a specified temperature and pressure.
Here's a way to remember the weight of 1 gallon of water. A cup of water is 8 fluid ounces or 1/2 pound. So 2 cups in a pint and 2 pints in a quart and 4 quarts in a gallon so a gallon is 128 fluid ounces or 8 pounds. Well I just looked it up and 8.35 pounds is correct. I guess a fluid ounce is not an ounce of water.