The base found in RNA nucleotides, but not in DNA, is uracil.
RNA and DNA share three bases: adenine, cytosine, and guanine. However, for the fourth base, DNA has thymine while RNA
has uracil. When forming base pairs, cytosine bases are matched with guanine, while adenine bases are matched with uracil or thymine.
Answer:
Volcanic eruptions help provide fertile soils (Option A)
Explanation:
There have been numerous confirmation of the existence of fertile lands around regions known to have experienced volcanic activities. The regions around Mount Vesuvius is not an exception even though volcanic activities around the region are over thousands of years ago.
This is because, when Volcano occurred in such regions, it deposited volcanic materials rich in minerals. The materials are then weathered or broken down by the action of water or erosion to release nutrients into the soil.
Answer:
Sugar is interesting stuff. When you cook most foods, the heat is generated by the metal of the pan transferring heat from the flame or burner. But sugar actually creates additional heat as it breaks down, making the temperature rise faster. this means that the sugar can actually be hotter than the parts of the pan away from direct heat. If you stir it, the hot sugar comes in contact with the cooler sides of the pan and crystallization sets in.
In the same way that unmeted chocolate added to melted chocolate will temper the entire mass by crystalizing it, a single sugar crystal from wet sugar that touches the sides of the pan and evaporates, then falls back into the melted sugar will begin the process of crystallization and ruin an entire batch of caramel. Removing it from the heat and adding a little water to liquify it will make it possible to start over.
The evolutionary advantage of an rna genome in eukaryotic cell virus is that it <span>have another mechanism for genetic diversity.
For example, RNA exchange between mammalian and avain flu--> pandemic flu
It also have advantage to get around limitation that Eukaryotic only encode one protein.
Viral genomes can be made out of either RNA or DNA. The genomes of RNA viruses can be either single-stranded or twofold stranded RNA, and may contain at least one separate RNA particles
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