Answer:
Some three billion years ago, the Earth's atmosphere was virtually devoid of oxygen. At about 2.4 billion years ago, oxygen was released from the seas as a byproduct of photosynthesis by cyanobacteria. Levels of the gas gradually climbed, reaching about one percent around two billion years ago.
Explanation:
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During chemical reactions, the chemical bonds between atoms are altered. ... Enzymes make chemical reactions take less time by decreasing the activation energy of the chemical reaction. The role of the enzyme-substrate complex is to provide the energy to break or form bonds in chemical bonds.
Mesenteries attach parts of the digestive tract to the dorsal body wall
The answer to your question is the first choice or choice A. Bacteria is a decomposer. That would be the only valid choice. If the question didn't say decomposer then all of these choices would be correct, but because it only says decomposers, bacteria would be the correct choice.
Amino acid sequences can be defined by a percentage of identity. This percentage indicates the number of identical residues between proteins or nucleic acids of a given alignment.
- In this case, 240 aminoacids is the total length of the protein alignment (i.e. the alignment between FP1 and FP2 proteins)
- In consequence, in this case, the percentage of identity is 99.58% because dissimilarity is equal to 1/240= 0.0041667%, thereby percentage of identity is equal to 100 - 0.0041667 = 0.995833%.
- Nucleic acid (either DNA or RNA) sequences and amino acid sequences can be defined by the percentage of identity.
- The percentage of identity can be used to discover proteins or protein regions (i.e., domains, linear motifs, etc) which exhibit homology, i.e., proteins/protein regions that are similar due to a common evolutionary origin.
In conclusion, the percentage of identity is determined by the number of identical nucleotides (DNA and RNA) or amino acid residues (proteins) over the total of nucleotides/amino acids in the local alignment.
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