Answer:
C. They contain sugars, phosphate, and nitrogenous bases
Explanation:
A. is wrong because only RNA is made up of single strands of nucleotides, while DNA is a double-stranded helix.
B. is wrong because DNA and RNA are examples of nucleic acids, not carbohydrates
D. is wrong because only RNA contains uracil, while DNA has thymine instead of uracil.
C. is correct because both DNA and RNA have sugar-phosphate backbones and nitrogenous bases. The difference between RNA and DNA is seen in their names--deoxyribo nucleic acid (DNA) vs. ribo nucleic acid (RNA). Ribose is a type of sugar, the same as found in RNA, while deoxyribose (in DNA) is the same except for not having an oxygen atom on the 2' Carbon (de-oxy = without oxygen).
Answer:
Chemical reaction
Explanation:
Chemical changes happens when a substance combines with another to form a new substance (or unexpected color, temperature or smell), called chemical synthesis or, alternatively, chemical decomposition into two or more different substances
<span> Embryonic stem cell research is kind of a dead area now since there is no way to control the differentiation. Most research is being done on adult stem cells to help map and control the differentiation process.
Stem-cells from aborted fetuses - The government doesn't sponsor this, if it is done it is by private companies not located in the USA. You could try researching umbilical cord stem cells to be somewhere near your topic. They come from the afterbirth of normal deliveries.
You could do a much easier report by covering cloning of mice through stem-cell technology. It is happening and helping scientists understand diseases. </span>
