What is true regarding PSI and PSII?
1. PS I works before PS II during the light reaction
2. A single chlorophyll a molecule makes the reaction center in both PS I and PS II
3. The reaction center of PS I is P680 and in PS II is P700
4. LHC is seen in PS I but not in PS II

The electrons needed to replace those removed from PS I are provided by:

The stroma lamellae membranes:
1. have both PS II and NADP reductase enzyme
2. have PS II but not NADP reductase enzyme
3. lack PS II but have NADP reductase enzyme
4. lack both PS II and NADP reductase enzyme

The NADP reductase enzyme is located:

The ATP synthase consists of two parts where:
1. ${\mathrm{F}}_0$ is a transmembrane channel and ${\mathrm{F}}_1$ protrudes out towards stroma
2. ${\mathrm{F}}_1$ is a transmembrane channel and ${\mathrm{F}}_0$ protrudes out towards stroma
3. ${\mathrm{F}}_0$ is a transmembrane channel and ${\mathrm{F}}_1$ protrudes out towards lumen of thylakoid
4. ${\mathrm{F}}_1$ is a transmembrane channel and ${\mathrm{F}}_0$ protrudes out towards lumen of thylakoid

How many carbon atoms does the primary carbon dioxide acceptor have in C₃  photosynthesis?

How many ATP and NADPH are respectively required to make one molecule of glucose through the Calvin pathway?

Identify the incorrect statement regarding the comparison of ${\mathrm{C}}_4$ plants to the ${\mathrm{C}}_3$ plants:
1. They tolerate higher temperatures
2. They show a response to high light intensities
3. They have a lower productivity of biomass
4. They lack photorespiration

The bundle sheath cells are characterized by:
I. a large number of chloroplasts present in them
II. thick cell walls impervious to gas exchange
III. large intercellular spaces

The primary ${\mathrm{CO}}_2$ acceptor in ${\mathrm{C}}_4$ plants is:
1. RuBP in mesophyll cells
2. RuBP in bundle sheath cells
3. PEP in mesophyll cells
4. PEP in bundle sheath cells