Answer:
Nucleus
Explanation:DNA (Deoxyribonucleic acid) is a genetic material and carries the genetic information from one generation next generation. It restores the species identity. The Double helical model of DNA was given by the James Watson and Francis Crick in 1953 based on the Chargoff’s rules and X-ray diffraction data of Wilkins and Franklins. According to them, two polynucleotide chains run twist around each other form right-handed double helix. Each nucleotide made up of a nitrogenous base, deoxyribose sugar, phosphate moiety.
The nucleus is a master control center of the cell and it was first discovered by the Robert Brown. It is a membrane-bound organelle harbor the genetic material called DNA. The integrity of DNA is maintained by the nucleus.When the cells are grown in radioactive nucleotides containing a medium, all the radioactive nucleotides are incorporated into the DNA, which is located in the nucleus so most of the radioactivity concentrated in the nucleus of the cell.
Antibiotic resistance is problematic due to its effects on society. The bacteria can spread and infect humans and animals. This can often be more difficult to treat because of the non-resistant bacteria.
Answer:
This is an controlled experiment because he is only changing the amount of carbon dioxide in the air. Since he is only changing one variable at a time and comparing it to a natural, unaltered tomatoe area, his experiment is controlled.
Explanation:
The definition of a controlled experiment is a test where the person conducting the test only changes one variable at a time in order to isolate the results. An experiment where all subjects involved in the experiment are treated exactly the same except for one deviation is an example of a control experiment.
Body fat percentage of over 33% is considered high for a female
The urinary or the excretion system.