Nucleic acids are the biolmolecules which are responsible for carrying information from one generation of organisms to the other. There are two types of nucleic acid namely the deoxyribo nucleic acid (DNA) and the ribo nucleic acid (RNA).
The similarity between the DNA and RNA is that both act as the genetic material carrying genetic information in them. Both are made up of polynucleotide chain with the repeating units called the nucleotides containing a nitrogenous base, a pentose sugar and phosphate. The difference lies in the type of the sugar and nitrogenous bases present. In RNA, the sugar is a ribose. In DNA, the sugar is a deoxy ribose derived from a ribose sugar by the loss of an oxygen atom. The nitrogenous bases of DNA are the adenine, guanine, thymine and cytosine. Whereas, the nitrogenous bases of RNA are the adenine, guanine, cytosine and uracil. Also, DNA is a double stranded molecule with two polynucleotide chains, whereas RNA is single stranded.
C because it's a good feeling but it can be stressful moving away from your family or whatever it is
There are many different ways to solve this. If you are a visual learner, see the image of the normal distribution graph attached. This shows the empirical rule of
68-95-99.7 which means that approximately 68 % of the data is within 1 standard deviation, 95% of the data is within 2 standard deviations, and 99.7 % of the data is within 3 standard deviations.
In this case,
the mean is 3 and the since the
standard deviation given is 0.25, we are going to have a the center of the graph the number 3 because the mean given is 3 minutes. We move one space to the right and that would represent 3.25 minutes, one more space to the right and that is
3.50 minutes. Similarly, go back to the center of the graph, which we decided would be 3 because it is the mean. Now move one space to the left, this would be 2.75, one more space to the left and this represents
2.50 minutes.
The questions asks to approximately what percent of red lights last
between 2.5 and 3.5 minutes. Notice 2.5 and 3.5 fall within 2 standard deviations, and we previously said that 95% of the data is within 2 standard deviations. Therefore, the percent of red lights that last between 2.5 and 3.5 minutes is
95%
True. :)))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))).