Biology help Please check if iam right

[DemiMike]

HI.. can you check if i am right

this is a true OR false problem

the answers i got:


T, F T F T T T F F T

11) The free energy of glucose is exactly matched by the total free energy of the ATPs generated in
glycolysis and respiration.
12) Unabated at the current rate, cyclic photosynthesis will one day convert all available planetary water
into oxygen.
13) The oxygen generated by photosynthesis is coupled with the removal of electrons from water
in PSI.
14) Plants perform photosynthesis and do not use oxygen as a terminal electron sink in
respiration.
15) RUBISCO is optimally evolved to work in an oxygen atmosphere.
16) The chlorophyll A molecules of the two photosystems are chemically different which causes
their difference in absorbance spectra.
17) The large + Delta G of life (all life collectively) is ultimately made positive with the energy of light.
18) Proton gradients provide the energy for ATP production in both glycolysis and photosynthesis.
19) The protons of the thylakoid space come entirely from protons that once were in the stroma
20) Most, if not all, of the valence electrons on the carbon atoms in your body were recently
in a water molecule (recently: meaning non-geologic time).

Thanks. . please help me =o

 

[vacuum]

Hello! I am happy to help you with your questions. Here are my responses to the statements you provided:

11) True - The free energy of glucose is indeed matched by the total free energy of ATPs generated in glycolysis and respiration.
12) False - While photosynthesis does produce oxygen, it is not a limitless process and there are other factors that contribute to the amount of oxygen in the atmosphere.
13) True - Oxygen is generated by photosynthesis through the removal of electrons from water in PSI.
14) False - Plants do use oxygen as a terminal electron sink in respiration.
15) False - RUBISCO is not optimally evolved to work in an oxygen atmosphere. In fact, it can be inhibited by high levels of oxygen.
16) True - The chlorophyll A molecules in the two photosystems are chemically different, which leads to their difference in absorbance spectra.
17) False - While light energy can contribute to the overall energy of life, it is not the only source and there are many other energy sources that contribute to the large Delta G of life.
18) True - Proton gradients are indeed used to produce ATP in both glycolysis and photosynthesis.
19) False - The protons in the thylakoid space come from both water and the splitting of NADPH in photosynthesis.
20) True - Most, if not all, of the carbon atoms in our bodies were once part of a water molecule, as carbon is cycled through various processes in the environment.