Which reaction led van Neil to suggest that the water molecule, rather than carb
ID: 95354 • Letter: W
Question
Which reaction led van Neil to suggest that the water molecule, rather than carbon dioxide, was split in photosynthesis?
A) CO2+H2O=O2+C(H2O)
B) CO2+H2S=S+C(H2O)
C) CO2+H2O=O2+C(H2O)
D) CO2+H2S=O2+C(H2S)
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Which molecule cannot be generated by a chloroplast that has been deprived of CO2?
A. NADBH+H+
B. H2O
C. ATP
D. glucose
Thank you so much!!
Explanation / Answer
for question number 1.
correct answer is B
explaination
by studying purple sulfer bacteria and green sulfer bacteria he was first scientist to demonstrate that photosynthesis is a light dependet redox , in which hydrogen from an oxidizable compound reduces carbondioxide to cellular materials.
reaction is
2H2S + CO2 ----> 2S + CH2O + H2O
where S = electron acceptor.
his discovery predicted that H2O is the hydrogen donor in green plant photosynthesis and is oxidized to O2.
question number 2.
correct answer is D
that is glucose.
explaination
the job of the chloroplast is to take CO2 , SUNLIGHT and H2O to make GLUCOSE.
and if chloroplast do not have CO2, it cannot make glucose.
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