Question

question 6
0.45 pts
what evidence would you need to support the claim that a sample contains a lipid?
○ a benedict’s test result that is blue
○ a brown paper test result that is translucent
○ a benedict’s test result that is yellow, orange, or red
○ a brown paper test result that dries out and is not translucent

Explanation:

To determine if a sample contains a lipid, the brown paper test is used. When a lipid is present, the brown paper test result is that the paper dries out and is not translucent (it becomes opaque or leaves a grease spot that doesn't let light through, and when dry, the area with lipid doesn't remain translucent). Benedict's test is for reducing sugars (blue means no reducing sugar, yellow/orange/red means presence of reducing sugar), so options with Benedict's test are for sugar detection, not lipids. The translucent brown paper test result is not indicative of lipid (translucent after brown paper test can be from water, but lipid leaves a non - translucent, grease - like spot that dries without translucency). So the correct option is the one about brown paper test drying out and not translucent.

Answer:

a brown paper test result that dries out and is not translucent