What is identified in blood type analysis?
Different polysaccharides
Different proteins
Different lipids
Different amino acids

The answer is different amino acids.
The amino acids carry the red blood cells and then the liquid part of blood (Plasma), are them distributed all throughout the body tissues

Idon't get it either

Which of the following is an example of an opposing signal? no examplthates given.   i would say, that traffic lights in a city at major intersections direct the flow of traffic in opposite directions so would be an example.also, stop signs on either side of the same street would be an example. at a train crossing, the light for allowing car traffic in opposite directions or not would be another example.