Benedict solution. This is a test for the presence for glucose. Remember, diabetes is when there is too much glucose in a persons body and so it is present in the urine as well. Once benedict solution is added the colour changes opposite the colour spectrum depending on how much glucose is present. It changes from blue back to green to yellow all the way to orange and red as more glucose is present.
The scientific reasoning behind this is because benedict solution contains copper. Glucose tends to give electrons away and so is called a ‘reducing sugar’. The electron is given to copper and this as a result is a cause for the change in the colour of the solution.
Answer: C. Stream elevation
Stream velocity is the speed of water in a stream. It can be measured in meters per second or feet per second. Stream velocity is highest in the mid stream and lowest along the bottom of the stream. Stream discharge depicts the flow of water from it's source of origin. Stream gradient indicates difference in pressure levels between different water layers. Channel size is the width of water surface acquired by the water body. Stream elevation is the rise in the superficial layer of water. Stream discharge, stream gradient and channel size all influence the stream velocity as they are related to the flow of water. Stream elevation does not influence flow of water hence, does not influence stream velocity.
<span>A protein digesting enzyme would make meat more tender by breaking down long fibrous protein chains into shorter protein chains. Just as piercing a tough piece of meat many times with a thin blade will cut long protein fibers into shorter, more tender fibers, an enzyme will do the same type of cutting, but on a microscopic level.</span>
