The first description of the DNA (deoxyribonucleic acid)chain was done by Watson and Crick in 1953, the nucleotides that constitute the DNA are four: cytosine (C), guanine (G), timine (T) and adenine (A). When doing a model is essential to remember that cytosine ONLY joins guanine and timine only link adenine, this is due to the size and chemical properties of each molecule. Later, another related and similar and molecule was discovered, the ribonucleic acid or RNA, which also is constructed by nucleotides.
In both cases, the nucleotides are compound of 3 main components: a nitrogen base, a pentose and a phosphate. When the molecule lacks the phosphate group, is called nucleoside. Depending on the chain ( DNA or RNA) the nitrogen base derives from purine (adenine and guanine) or pyrimidine (cytosine or timine) just in the RNA instead of timine is uracil (U)
The union is established between adjacent molecules through the phosphate, while among each other through the nitrogen base-remember C=G and T or U=A. The core of each molecule is the pentose. Therefore the best representation of the molecule is attached
References
Watson, J. D., & Crick, F. H. (1953, January). The structure of DNA. In Cold Spring Harbor symposia on quantitative biology (Vol. 18, pp. 123-131). Cold Spring Harbor Laboratory Press.
Answer: B) groups have fewer than eight people
Explanation: people reduce their own contribution when they are working in groups. As part of group,when members reduce their input,especially in an existing educational context,these phenomenon may be problematic
In a class room activities. Recent study states that to prevent social loafing from occurring creation of smaller group of three or eight,will produce a better result. The result of individual who works in a smaller group produces more positive result
Answer : Because it has been repeatedly demonstrated
Explanation :
Everything. Not breaking the law is important
Answer:
Explanation:
An irony is a rhetorical device which appears to be a certain way but it us actually the opposite it is the expression of one's meaning by using language that normally signifies the opposite, typically for humorous or emphatic effect.
Irony is a state of affairs or an event that seems deliberately contrary to what one expects and is often wryly amusing as a result.
George is too intelligent, more intelligent than normal, but wears a device that keeps him and people like him from taking advantage of their brain. Despite being very intelligent, their own brain is being protected from them, so that they can't use it unfairly. This is highly ironical.
They are intelligent but they are not permitted to use their Brain because they may use it unfairly.
