Respiration In Plants

This whole scheme of transfer of electrons, starting from the PS II, uphill to the acceptor, down the electron transport chain to PS I is called _________.

• Cyclic photophosphorylation

• Oxidative phosphorylation

• Non-cyclic photophosphorylation

• Electron transport system

The splitting of water is associated with the _________.

• PS II

• PS I

• Carotenoids

• Xanthophylls

The electrons needed to replace those removed from photosystem I are provided by _________.

• Oxygen

• Water

• Carbon dioxide

• PS II

The process through which ATP is synthesised by cells is called _________.

• Quantum yield

• Phosphorylation

• Fluorescence

• Phosphorescence

_________ is the synthesis of ATP from ADP and inorganic phosphate in the presence of light.

• Oxidative phosphorylation

• Photophosphorylation

• Quantum yield

• Uphill transport

Assertion : During aerobic respiration, pyruvic acid formed as a result of glycolysis, undergoes phosphorylation reaction to form acetyl CoA.

Reason : There is net gain of 18 ATP molecules during aerobic respiration of one molecule of glucose.

• Both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

• Both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

• Assertion is true but Reason is false

• Both Assertion and Reason are false

Assertion : Respiratory pathway is an amphibolic pathway.

Reason : In respiration, there is breakdown of many substances (catabolism) and synthesis of many substances (anabolism) by respiratory intermediates.

• Both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

• Both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

• Assertion is true but Reason is false.

• Both Assertion and Reason are false.

When oxygen is inadequate for cellular respiration in animal cells, pyruvic acid is reduced to ________.

• fumaric acid.

• citric acid.

• lactic acid.

• oxalo-acetic acid.

Which of the following is correct for Krebs cycle?

• It is also known as EMP pathway

• It occurs in mitochondrial matrix

• Succinic dehydrogenase enzyme is found in matrix of mitochondria

• In one turn of it, 10 ATP equivalents are formed

How many ATP molecules could maximally be generated from one molecule of glucose, if the complete oxidation of one mole of glucose to CO2 and H2O yields 686 kcal and the useful chemical energy available in the high energy phosphate bond of one mole of ATP is 12 kcal?

• 2

• 30

• 1

• 57