Answer:
The way I would separate the shell fragments from the sand would be by using a filter. As shell fragments are larger than sand. So I would use a filter with 2 mm spaces to separate them. Now, for the sand separation from the water, I would heat the water so it would evaporate and connect a tube to another recipient making the sand stay in the first tube and the water vapor cools in the tube to precipitate in the other recipient. Three mixtures I have prepared at home are chocolate milk, coffee and cream, and lemon juice and tea.
Explanation:
To understand this answer we have to remember a few things. First, mixtures always have solute and solvent. The solvent is the most liquid component of the mixture and it can incorporate the more solid element in its composition to carry it. Now, there are several methods to separate them, barrier methods like filters are the first and more basic ones, as they are aimed to separated big solutes. While evaporation can be used to separate two very liquid elements. Like distillation of alcohol to separate the most concentrated oil from the alcohol.
Beta thalassemia is a blood disorder that reduces the production of hemoglobin
The answer is B. They cannot produce enough heat to keep their bodies warm.
Answer:
<h2>DNA polymerases always synthesize DNA in the 3’ to 5’ direction, ( correct is 5' to 3').</h2>
Explanation:
1. DNA polymerase (an enzyme) which replicates DNA, by using the parental strand as template and synthesize a new complementary strand.
2.DNA polymerase synthesize DNA in 5' to 3' direction in both strands.
3. One strand is called leading strand which in synthesized continuously, and other is called lagging strand which is synthesized, by having gapes which are filled by DNA poll-1, and these are linked by DNA lygase enzyme.
4. DNA polymerase synthesis both leading and lagging, and it contain proofreading activity.
Answer:
The correct answer is - true.
Explanation:
Like macromolecules and vitamins, minerals are also essential for a healthy body. The essential minerals can be divided on the basis of their requirement into major minerals and trace minerals.
The trace elements and the major elements both are equally important. It does not matter if a high amount of major elements are required and a small amount of trace elements required. The amount is not an indication of the importance of the element.
