Exam 2 Vocab

Question 1

Photorespiration

Answer 1

fixation of oxygen instead of CO2 in the stroma rxns. RUBISCO fixes 1 O2 per 4 CO2 fixed.

Question 2

C3 photosynthesis

Answer 2

photosynthesis where carbon is first fixed into a 6-carbon sugar (~85% of plants, ancestral state)

Question 3

C4 photosynthesis

Answer 3

variation of photosynthesis where carbon is first fixed into a 4-carbon acid by PEP-carboxylase (~3% of plants)

Question 4

CAM photosynthesis

Answer 4

variation of photosynthesis where carbon is first fixed into a 4-carbon acid by PEP-carboxylase IN THE DARK (~8% of plants)

Question 5

Kranz anatomy

Answer 5

anatomy needed for C4 photosynthesis. More target shaped

Question 6

Mesophyll cells

Answer 6

fix CO2 into a 4-carbon acid

Question 7

bundle sheath cells

Answer 7

release CO2 from the acid and then perform photosynthesis