11. Given only the structure of the four nucleobases and the linear structure of D-ribose, draw the following molecules: r(GUCA)
and d(GTAC). Do not forget the 5'-phosphate. (Some version of this question will be all or part of question #1 on the first examination. Now you know.). 12. What is the monomer precursor for the synthesis of nucleic acids? Why is this reaction energetically favorable? Are new monomers added at the 5'-end of the chain or at the 3'-end of the chain?
13. What is Chargaff's rule?
14. If the genome of an organism contains 32% A bases, what is the % of C bases?
15. Explain why Franklin's x-ray images of DNA fibers suggested a double helical structure for DNA.
The speculation that RNA preceded DNA and proteins in evolution. In the earliest cells, pre-RNA molecules could have had mixed genetic, structural, and catalytic features and those features could have progressively been changed with the aid of using RNA.
The presence of the X form withinside the diffraction sample indicated to Franklin that DNA strands have been helical. Each sprint of the X form marks the repetition of atoms, or atomic repeats, in DNA
Chargaff rule: The rule that during DNA there may be constantly equality in amount among the bases A and T and among the bases G and C. (A is adenine, T is thymine, G is guanine, and C is cytosine.) Named for the tremendous Austrian-American biochemist Erwin Chargaff (1905-2002) at Columbia University who found this rule.
The crucial physiological roles performed with the aid of using the nucleic acid precursor rNTP and dNTP molecules in people has come to be obvious because the Nineteen Seventies with the aid of using the popularity of 28 exceptional inborn mistakes of purine and pyrimidine metabolism.
Additionally, certain types of fishing gear can inflict serious physical damage to coral reefs, sea grass beds, and other important marine habitats. Coral reef fisheries, though often relatively small in scale, may have disproportionately large impacts on the ecosystem if conducted unsustainable.
Prophase is the first stage in mitosis, occurring after the conclusion of the G2 portion of interphase. During prophase, the parent cell chromosomes which were duplicated during S phase condense and become thousands of times more compact than they were during interphase.
Hi! I believe that the lasers are used for measuring the earthquakes movement and how much worse it is going to be with the next earthquake. But they would also measure how much force there was and how much more or less there will be. :) Hope this helps. :)
Acute HIV infection is the first phase of HIV infection. The early HIV test can detect HIV during the acute HIV phase. The best test for detecting HIV infection is the early HIV test (also known as NAAT/RNA testing)
