Are the following statements true or false. If false, explain why. 1. The pentos

Question

Are the following statements true or false. If false, explain why.

1. The pentose phosphate pathway produces a product needed by fatty acid synthase.

2. In the mitochondrial electron transport chain, each successive electron carrier has a more positive E'° than it's preceding electron donor, while the reverse is in the photosynthetic transport chain.

3.The transfer of electrons from NADH to O2 is coupled to proton transport out of the mitochondrial matrix through FoF1 ATP synthase.

4. Most light harvesting pigments of the two photosystems in higher plants transfer the energy of their excited electrons to adjacent pigments.

5. The flow of electrons from water to NADPH via photosystems I and II is connected by the Mobil protein plastocyanin with each photosystem requiring light absorption to complete the connection.

Explanation / Answer

1 False

The pentose phosphate pathway is a metabolic pathway which is comparable to glycolysis. It generates NADPH and pentoses (5-carbon sugars) as well as ribose 5-phosphate, involves for synthesis of nucleotides.

2 True

An electron transport chain (ETC) is a series of compounds that transfer electrons from electron donors to electron acceptors via redox (both reduction and oxidation occurring simultaneously) reactions, and couples this electron transfer with the transfer of protons (H+ ions) across a membrane. In chloroplasts, light drives the conversion of water to oxygen and NADP+ to NADPH with transfer of H+ ions across chloroplast membranes.

3 True

4 True

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