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When a urine sample is tested with Benedict's solution, an orange precipitate forms. A possible explanation for this is that the urine?
contains?
a. proteins
b. fats
c. glucose
d. glycogen
(I'm thinking it's either glucose or glycogen but I don't know which one it really is)
A hemorrhage (loss of blood) results in a decrease of urine production by
a. increasing the amount of filtrate
b. dilating the blood vessels
c. increasing plasma osmotic pressure
d. lowering blood pressure
When a person undergoes water loss because of heavy perspiration, the loss of water from the blood causes
a. increased production of ADH
b. decreased urea formation by the liver
c. decreased production of ADH
d. increased urea formation by the liver
1 Answer
- CarolOklaLv 73 years ago
Glucose. My mother ran Benedict's tests on MY urine because I've been a type 1 diabetic since i was 2 years old in 1955. It is NOT the color OF THE PRECIPITATE that indicates the percentage of glucose. it's the color of THE SOLUTION. If it is ORANGE, that indicates a lot of glucose in the urine, . if it is navy blue, that indicates low or no glucose. it is NOT the color of the preciptate. it's the color of the solution.
"...Benedict’s Test is used to test for simple carbohydrates. The Benedict’s test identifies reducing sugars (monosaccharide’s and some disaccharides), which have free ketone or aldehyde functional groups. Benedict’s solution can be used to test for the presence of glucose in urine.
Some sugars such as glucose are called reducing sugars because they are capable of transferring hydrogens (electrons) to other compounds, a process called reduction. When reducing sugars are mixed with Benedicts reagent and heated, a reduction reaction causes the Benedicts reagent to change color. The color varies from green to dark red (brick) or rusty-brown, depending on the amount of and type of sugar...."
