Chapter 6 - Photosynthesis

Which of the autotrophs involves sulphur bacteria?

• Photoautotroph.

• Chemoautotroph.

Chlorophyll a is bluish green in colour.

• True.

• False.

Chlorophyll b absorbs light mainly in the 400nm and 650nm regions.

• True.

• False.

Which of the following spectrum represents the actual rate of a physiological activity in the living cells?

• Action spectrum.

• Absorption spectrum.

Light energy is absorbed by accessory pigments of _______________.

• Photosystem I

• Photosystem II

Non-cyclic photophosphorylation does not involve photolysis of water.

• True.

• False.

The photoactivated electrons released from PS II are accepted by __________ before transferring to plastoquinone.

• plastocyanin

• NADP+ reductase

• phaeophytin

• cytochrome b6f complex

In non-cyclic photophosphorylation, water molecules are split up, producing ___ electrons, ___ hydrogen ions and ___ oxygen molecule.

• 4, 1, 4.

• 1, 1, 4.

• 4, 4, 1.

• 1, 4, 4.

in light-dependent reactions, NADPH is lastly released into the __________ of the chloroplast.

• thylakoid

• grana

• stroma

• intermembrane

In cyclic photophosphorylation, the second electron acceptor is __________.

• ferredoxin

• FeS

• NADP+ reductase

• plastocyanin