Answer: Option D) 8 segments, with the 2 original strands on different segments
Explanation:
During polymerase chain reaction, a double stranded DNA (dsDNA) is selectively and repeatedly copied in the PCR machine.
In the first round, the single piece of double stranded DNA (dsDNA) unwinds in two seperate strands, before complementary nucleotides are synthesized to establish double helix.
In the second round, the two dsDNA yields 4 segments before complementary nucleotides are synthesized to establish double helix.
In the third round, the four dsDNA yields 8 segments before complementary nucleotides are synthesized to establish double helix.
Thus, after 3 rounds, the two original strands are on the 8 different segments of copied DNA.
Answer:
The next two major events that take place in mitosis are the alignment of chromosomes at the center of the cell and the subsequent separation of sister chromatids to opposite mitotic spindle poles. These two events occur in metaphase and anaphase, respectively.
Explanation:
Exercise intensity and duration are the main factors that influence the contribution of carbohydrates vs. fats as fuel to make ATP. Exercise intensity increase cells use a higher ratio of carbohydrate to make ATP.
ATP obtained from lipid oxidation is over twice the amount obtained from carbohydrate and amino acid. During the high intensity exercise , carbohydrate are the major fuel source. During low intensity exercise fat is the primary source of fuel your body uses.
Oxidation reactions in the cytoplasm and mitochondria of cell produced ATP and carbohydrate , proteins and fats undergo a series of metabolic reactions collectively called cellular respiration.
To learn more about cellular respiration here
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