Whole milk will give a biuret positive, Benedict positive, iodine negative and brown paper bag test positive results.
<h3><u>Explanation:</u></h3>
Whole milk is obtained from mainly the dairy animals like cow, Buffalo etc. It contains different ingredients of diet and is considered as an ideal balanced diet for infants.
The Benedict's test is a test to identify the presence of reducing sugars. Milk contains reducing sugar lactose. This is why milk gives Benedict's positive result.
Biuret test also gives positive result because it is a test for protein and milk contains enough of this. The protein in milk is called casein.
The brown paper bag test is a test for lipid and its positive because the milk contains enough lipid. It depends on milk source.
The iodine test is a test for starch and milk isn't a good source of starch. So iodine test isn't positive.
Answer:
Your answer is B) Mutations lead to genetic variation.
Think of it like this, when rays were first starting to develop, they probably started with only one kind, stingless. Somewhere down the line, the genes of the rays started to mutate and eventually, there were stingrays and stingless rays. Now at this point there are predators that frequently feast upon the rays, so which of the two rays are more likely to defend themselves, and get away to live long enough to reproduce and pass on their genes? The stingrays! The mutation that may have occurred millions of years ago, has determined which organisms were more fit for a changing environment.
The body's chemical buffer system consists of three individual buffers: the carbonate/carbonic acid buffer, the phosphate buffer and the buffering of plasma proteins. While the third buffer is the most plentiful, the first is usually considered the most important since it is coupled to the respiratory system.
Carbonic acid (H2CO3) is a weak acid and is therefore in equilibrium with bicarbonate (HCO3-) in solution. When significant amounts of both carbonic acid and bicarbonate are present, a buffer is formed. This buffer system can be written as:
H2CO3 + H2O  H3O+ + HCO3-
Under normal circumstances there is much more bicarbonate present than carbonic acid (the ratio is approximately 20:1). As normal metabolism produces more acids than bases, this is consistent with the body's needs. The blood, with its high base concentration, is able to neutralize the metabolic acids produced. Since relatively small amounts of metabolic bases are produced, the carbonic acid concentration in the blood can be lower.
Since carbonic acid is not stable in aqueous solutions some of it decomposes to form carbon dioxide and water. The respiratory system is responsible for removing the carbon dioxide.
H2CO3  H2O + CO2
By combining the two reactions of carbonic acid we can write:
Answer: In some situations, genes play a larger role in determining your behavior; in other situations, environment plays a larger role in influencing your behavior. If you had a whole different set of experiences over your lifetime your genes may be expressed in different ways, and you may behave differently than you do now.
Explanation:
Fossil fuels are an important natural resource used by society because
it makes our living easier. Fossil fuel is buried combustible geologic deposits
of organic materials fromed from the plants and animals that have died. The dead
beings are then converted to crude oil, coal, natural gas or heavy oils when
exposed under heat and great pressure in the earth.
