Species A, B, and C all make actin, a protein that helps muscles contract.
The amino acid sequences of actin protein are 90%
identical between A and B, but only 70% identical between
A and C.
Based on the evidence above, choose the statement that is
most likely to be correct:
A shares a more recent common ancestor with C than with B
O A shares a more recent common ancestor with B than with C
All 3 species are equally related

the cost of mining is extremely low compared to the money earned from mining, creating income to improve the environment.

where in your body is there an enzyme that does function at a high or low ph? what is the name of that enzyme and its function?

it provides an alternative energy pathway for the reaction to proceed.

a catalyst is a substance that speeds up the rate of a chemical reaction but is not consumed during the course of the reaction.

catalysts increase the rate of reaction without being used up. they do this by lowering the activation energy needed. with a catalyst, more collisions result in a reaction, so the rate of reaction increases. different reactions need different catalysts.

a catalyst works by providing an alternative reaction pathway to the reaction product. the rate of the reaction is increased as this alternative route has a lower activation energy than the reaction route not mediated by the catalyst.