An increase in hdl reduces the risk of heart failure
Answer:
C) Three hydrogen bonds will form with guanine.
Explanation:
Generally the DNA molecule is made up of Purines bases of Adenine and Guanine,and Pyrimidine of Cytosine and Guanine.However,RNA contains a different pyrimidine of Uracil.Thus the pairing is A-U am C-G.The uracil replaces Thymine.
The structure above is a Pyrimidine,because it is made up of single ring structure(an heterocylclic aromatic structure) compare to double structure of purines. Heterocyclic means it is ring form.Aromatic means it has resonance bonds which shift with the rings for stability.
It is also contains of two substitutes at position 4 of the ring structure (amineNH2) and at 2 which is the Keto group(=0).Therefore the structure is Cytosine.
In RNA structure the Cytosine pair with the three hydrogen bonds with guanine,while Adenine pair with Uracil.This ensures stability of the RNA structure.
Answer:
more likely chance that a bee will take pollen from one flower to another pollinating the flowers.
Explanation: birb
This is because many organisms have a common descent they may fit into this similar nested pattern, sharing anatomical and molecular characteristics. To this we call homology.
There is, on the other hand, another process called convergent evolution. This process is due to natural selection pressure that affects organisms in different ways according to its needs and environment. For example, when we consider a butterfly, a bat, or a sparrow, we may say that they all have wings, but those wings are not anatomically comparable because they have completely different recent origins.