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 following hormone had their receptors in the cell membrane except a-insulin b-tsh c-gh d- cortisol

Asolution of an enzyme and a substrate was placed in a water bath and the temperature of the reaction was raised gradually. the graph shown was plotted at the end of the experiment. what can be concluded from the graph? a) temperature has no effect on the activity of the enzyme. b) the effect of temperature on the enzyme is unpredictable. c) the enzyme shows increased activity up to a certain temperature. d) the activity of the enzyme is inversely proportional to the temperature.

Reactants undergo chemical reaction to form products. this chemical equation represents one such reaction. the coefficient for one of the reactants or products is incorrect. which part of the chemical equation is incorrect?