The properties of a compound can often be predicted from the properties of its constituent elements, however, they're not always the same due to changes that occur during chemical reactions.
Yes, you can often predict the properties of a compound by knowing the properties of the elements that make it up. This is a fundamental concept in chemistry. For instance, sodium is a very reactive metal and chlorine is a poisonous gas, but when they combine to form sodium chloride, the resulting compound is ordinary table salt, which is safe to consume. However, it's important to note that while the properties of a compound are related to the properties of its constituent elements, they are not always the same. This is due to the changes that occur during the chemical reaction process, in which bonds are formed or broken and electrons are shared, gained, or lost.
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B. Use a nucleic acid probe.
C. Subject the specimen to amniocentesis.
D. Use the polymerase chain reaction.
E. Subject the DNA to restriction enzymes.
Answer:
D. Use the polymerase chain reaction
Explanation:
Polymerase chain reaction (PCR) is a molecular technique used to make multiple copies or amplify a particular DNA sample. This enables scientist conduct thorough genetic analysis on minute sample of DNA, simply by amplifying it to a large quantity.
The PCR machine is usually used to amplify DNA fragment. The DNA fragments undergo three major steps successively: denaturation, annealing and elongation
The archaeologists would use the Polymerase Chain Reaction (PCR), a method for amplifying a specific fragment of DNA, to get sufficient DNA from the small scalp tissue sample for gene analysis. So the correct option is D.
To enhance the amount of DNA for a thorough analysis of the ancient human genes, the archaeologists would use the polymerase chain reaction (option D). The polymerase chain reaction, commonly known as PCR, is a method used to make numerous copies of a specified fragment of DNA. PCR is highly beneficial in research scenarios when only a small amount of DNA is available, as this technique can amplify a single or few copies of a specific DNA sequence to generate thousands to millions of copies. Techniques like electrophoresis, use of a nucleic acid probe, amniocentesis, or subjecting the DNA to restriction enzymes, are not primarily for amplification of DNA, but serve other purposes such as DNA separation, detection, prenatal testing, or DNA cutting at specific sequences, respectively.
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B. The mutations could be treated by chemotherapy.
C. It occurs in somatic cells and thus are not usually transmitted to descendants.
Answer: Obviously the anwser is C. It occurs in somatic cells and thus are not usually transmitted to descendants. Hope this Helps :D
a. True
b. False
The statement that mucus membranes trap pathogens that are airborne is True
Thus, the statement that mucus membranes trap pathogens that are airborne is True.
Learn about mucusmembraneshere:
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