Chapter 10 Photosynthesis

Question 1

1) The process of photosynthesis probably originated \_\_\_\_\_\_\_\_. 
A) in plants 
B) in prokaryotes 
C) in fungi 
D) three separate times during evolution

Answer 1

B) in prokaryotes

Question 2

2) If photosynthesizing green algae are provided with CO2 containing heavy oxygen 
(18O), later analysis will show that all of the following molecules produced by the algae 
contain 18O EXCEPT \_\_\_\_\_\_\_\_. 
A) 3-phosphoglycerate 
B) glyceraldehyde 3-phosphate (G3P) 
C) glucose 
D) ribulose bisphosphate (RuBP) 
E) O2

Answer 2

E) O2

Question 3

3) Which of the following are products of the light reactions of photosynthesis that are 
utilized in the Calvin cycle? 
A) CO2 and glucose 
B) H2O and O2 
C) ADP, i, and NADP+ 
D) electrons and H+ 
E) ATP and NADPH

Answer 3

E) ATP and NADPH

Question 4

4) When oxygen is released as a result of photosynthesis, it is a direct by-product of
________.
A) reducing NADP+
B) splitting water molecules
C) chemiosmosis
D) the electron transfer system of photosystem I
E) the electron transfer system of photosystem II

Answer 4

E) the electron transfer system of photosystem II