I think it's B.) Hall of fame
Based on DNA sequences, it is believed that changes in nucleotide sequence between two species are equivalent to the time that has elapsed since the two species diverged from their common ancestor. Gene sequencing is being used in addition to morphology to determine evolutionary relationships between organism. Homologous sequences show greater evolutionary relationship
Are there 2 answers to this question because I see 2 that are true. It must constantly increase entropy because that is a property of our universe and the second answer would be to constantly use energy, for maintaining living systems
First we must describe how immunity works. Immunity works by recognition of the antigen by macrophages or dendritic cells (antigen presenting cells) then presenting it to T cells and T cells will work to destroy the organisms with the specific antigen. B cells can also recognize antigens then secrete antibodies to combat organisms with the specific antigen. In the case of flu, or influenza, the genetic material of the virus mutates so often that the antibodies produced by the body against a certain strain of influenza will not work after some time because of the mutation of the virus.
Answer:
A. The catalytic activity of the complex is enhanced by the protein component and completely dependent on the RNA component of the complex.
Explanation:
RNAses are enzymes that degrade RNA. When treating the complex with an RNAse, the catalytic activity is completely abolished. This tells us that the RNA component is indispensable to the catalytic activity of the complex.
Proteases are enzymes that degrade proteins. Treating the complex with proteases only decreases slightly the catalytic activity, but it does not abolish it completely. This tells us that the protein component of the complex enhances the catalytic activity, but without it the complex can still work.
