5B - Rubisco in C3, C4 and CAM Photosynthesis

Question 1

Rubisco

Answer 1

A pivotal enzyme involved in initial carbon fixation during the light-independent stage of photosynthesis.

Question 2

carbon fixation

Answer 2

The process in living organisms where inorganic carbon, typically within carbon dioxide, is converted into organic compounds such as glucose. Carbon fixation is a central part of the light-independent stage of photosynthesis.

Question 3

inorganic

Answer 3

A compound that does not contain a carbon-hydrogen bond, e.g. carbon dioxide.

Question 4

organic

Answer 4

A compound containing a carbon-hydrogen bond, e.g. glucose.

Question 5

photorespiration

Answer 5

A wasteful process in plants initiated by Rubisco that limits photosynthesis.

Question 6

affinity

Answer 6

The tendency of a molecule/ atom to bind or react with another molecule/ atom.

Question 7

C3 plants

Answer 7

Plants with no evolved adaption to minimise photorespiration.

Question 8

C4 plants

Answer 8

Plants that minimise photorespiration by separating initial carbon fixation and the remainder of the Calvin cycle over space.

Question 9

bundle-sheath cell

Answer 9

A plant cell type that is the site of most of the Calvin cycle in C4 plants.

Question 10

CAM plants

Answer 10

Plants that minimise photorespiration by separating initial carbon fixation and the remainder of the Calvin cycle over time.