Below is a list of standard reduction potentials for biological half cell reactions. Using this Table answer the questions below: Succinate + CO2 + 2H+ + 2e- → alpha ketoglutarate + H2O

Eo ’ in volts -0.67

Oxaloacetate (OAA) + 2 H+ + 2e- → malate

Eo ’ in volts -0.17

Fumarate + 2 H+ + 2e- → succinate

Eo ’ in volts -0.03

(a). Under standard conditions, which metabolite would spontaneously reduce oxaloacetate (OAA)? (write the name of the metabolite)

(b). Write the possible reactions:

Select all the true statements about the cosmic microwave background radiation

How is ribosomal rna useful as a molecular clock? a. a large portion of the dna ring is not vital to structure or function, allowing it to accumulate neutral mutations. b. its rate of mutation increases over time as organisms continue to evolve and differentiate from each other. c. a slow mutation rate makes it useful for determining evolutionary relationships between ancient species. d. it is only found in select organisms, making it easier to compare relationships between species that have it.

Adrought killed all the plants in an agricultural farmland. gradually, due to wind and some birds for. nearby areas, new plants started sprouting l. what stage of succession was taking place in the farmland? a) competition b) nudation c) ecesis d) reaction e) migration