Answer:
The sample contains protein.
Explanation:
Biuret test is a test used to determine or assay for proteins in a solution. When the biuret reagent is added to a solution and it turns blue after 2 minutes, it means that the solution contains protein.
Benedict’s test is used to determine the presence of sugar (reducing sugar) in a solution. When it turns brick red, it means there is the presence of reducing sugar in large quantity.
From the question, since the solution turned blue on addition of Biuret reagent and was also blue on addition of Benedict’s reagent (the reagent is usually blue), it means that the solution contained just proteins excluding reducing sugars.
The main reason why United States was involved in Vietnam is that the United States believed in the so called Domino effect: that if one country becomes communist, others might become communist too. So they got involved to stop the spread of communism (option a)
Answer:
The correct option is: <u>macrosystem</u>
Explanation:
Bronfenbrenner's bioecological model of development, previously known as the ecological systems theory, includes the development of human beings in their environment. Five ecological systems are described in this model.
The macrosystem is one of the five ecological systems. It describes the large cultural or social environment of an individual, which includes laws.
<u>Therefore, the ruling of the supreme court is a part of Mark and John's </u><u>macrosystem</u><u>.</u>
Main Groups:
Crustaceans
<span>Insects </span>
<span>Arachnids </span>
<span>Myriapods(centipedes & millipedes) </span>
<span>Characteristics:
Exoskeleton
6+ legs
Jointed appendages
</span>
