-diamond
-topaz
-quartz
The minerals can be scratched with a fingernail. Thus, option A is correct.
Minerals has been defined as a substance which has natural such as coal, oil, salt which has been especially one that has been found just in the ground and some of the mineral has been also found in the food as well as drink and they are very necessary for the betterment of the health. The main feature of sedimentary rock has that they are formed in the multiple layers. Minerals has been defined as a substance which has natural such as coal, oil, salt.
The main feature of sedimentary rock has that they are formed in the multiple layers of the particles that are organic or the minerals at the surface of Earth, later followed by the process of cementation. The main feature of sedimentary rock has that they are formed in the multiple layers.The rocks are made up of more than one mineral and the size of some rocks are small or big it depends upon their constituents.
Therefore, The minerals can be scratched with a fingernail. Thus, option A is correct.
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The answer is phylum Sarcodina and class Heliozoa.
Actionophryx belongs to the group of Sarcodina. However, this is an older classification, and it is known that it belong to the groups of amoebas. It has a spherical body (helios, greek for sun) with axopodia (arms) so it is classified to the class sun-animalcules or Heliozoa. The body is surrounded by a glassy silica shell. It lives in freshwater, but some species are found in seas and oceans.
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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Answer:
The total energy production of a mitochondrion is enhanced by its large internal surface area.
Explanation:
All cellular activity requires energy, it is through mitochondria that this energy necessary for cell activity will be generated. Mitochondria has a large internal surface area, all of which strongly influences the energy production of this organelle.
To get energy, the cell necessarily needs glucose. Mitochondria have the function of breaking down glucose by introducing oxygen into carbon, what remains is carbon dioxide, which will come out through exhalation. This process performed by this important cellular organelle is known as cellular respiration. In order for cells to perform their functions normally, they depend on various chemical reactions that occur within the mitochondria.
Despite its great importance, mitochondria is a fairly small cell organelle. There are cells that have a large number of mitochondria, however, the amount of this organelle will depend on the function of each one. The more the cell needs energy to perform its vital functions, the more mitochondria it will produce.