18-Consider the reaction: A + B → C + D+ Energy a) the reaction is endergonic b) an enzyme could further speed up the reaction c) ATP is required for the reaction to proceed d) all of these statements are correct 20-The result of convergent evolution would be that: a) bats, birds and beetles have wings that have evolved at different times in the history of life b) bats, birds and beetles do not share a common ancestor with respect to wings c) the wings evolved three times independently, on three branches of the tree of life d) all of the above are correct 21-This reaction: 6CO2 + 6 H2O converted to C6H12O6 + 6O2 a) requires chlorophyll oxidation b) is an oxidation of carbon dioxide c) converts carbon dioxide into oxygen d) takes place in the mitochondrial matrix 22-Which of these statements is false regarding metabolism in general? a) oxidation can be defined as a loss of electrons b) during photosynthesis, hydrogen atoms are transferred from sugar to O2 c) potential energy is the sum of kinetic energy and heat energy d) autotrophs such as Cyanobacteria and Algae are able to produce their own organic molecules

18-Consider the reaction: A + B → C + D+ Energy a) the reaction is endergonic b) an enzyme could further speed up the reaction c) ATP is required for the reaction to proceed d) all of these statements are correct 20-The result of convergent evolution would be that: a) bats, birds and beetles have wings that have evolved at different times in the history of life b) bats, birds and beetles do not share a common ancestor with respect to wings c) the wings evolved three times independently, on three branches of the tree of life d) all of the above are correct 21-This reaction: 6CO2 + 6 H2O converted to C6H12O6 + 6O2 a) requires chlorophyll oxidation b) is an oxidation of carbon dioxide c) converts carbon dioxide into oxygen d) takes place in the mitochondrial matrix 22-Which of these statements is false regarding metabolism in general? a) oxidation can be defined as a loss of electrons b) during photosynthesis, hydrogen atoms are transferred from sugar to O2 c) potential energy is the sum of kinetic energy and heat energy d) autotrophs such as Cyanobacteria and Algae are able to produce their own organic molecules