Chapter 8 Photosynthesis

In autotrophic bacteria, where is chlorophyll located

• in chloroplast membranes

• in chloroplast stroma

• in the ribosomes

• in the infolded plasma membrane

If photosynthesizing green algae are provided with CO2 containing heavy oxygen (18O), later analysis will show that all of the following molecules produced by algae contain 18O except

• 3-phosphoglycerate

• glyceraldehyde 3-phosphate (G3P)

• glucose

• O2

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which of the following are products of the light reactions of photosynthesis that are utilized in the Calvin Cycle

• CO2 and glucose

• ADP, Pi, and NADP+

• ATP and NADPH

• H2O and O2

where does the Calvin Cycle take place?

• stroma of the chloroplast

• thylakoid membrane

• outermembrane of the chloroplast

• interior of the thylakoid

In any ecosystem, terrestrial or aquatic, which of the following are always necessary?

• autotrophs and heterotrophs

• producers and primary consumers

• autotrophs

• green plants

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When oxygen is released as a result of photosynthesis, it is a direct by-product of

• reducing NADP+

• splitting of water molecules

• chemiosmosis

• electron transfer system of PSI

A plant has a unique photosynthetic pigment. The leaves of this plant appear to be reddish yellow. What wavelenfths of visible light are being absorbed by this pigment?

• red and yellow

• blue and violet

• green and tellow

• green and red

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in the thylakoid membranes, what is the main role of the pigment molecules in a light-harvesting complex?

• split water and release oxygen to the reaction-center chlorophyll

• transfer light energy to the reaction-center chlorophyll

• synthesize ATP from ADP and Pi

• concentrate photons within the stroma

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which of the following events occurs in the light reactions of photosynthesis?

• NADP is produced

• NADPH is reduced to NADP+

• Light is absorbed and funneled to reaction-center chlorophyll

• ATP is phosphorylated to yield ADP

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Which statement describes the functioning of photosystem II?

• light energy excites electrons in the thylakoid membrane ETC

• photons are passed along to a reaction-center complex

• the electron vacancies in P680+ are filled by electrons derived from water

• the P680 chlorophyll donates a pair of protons to NADP+, which is thus converted to NADPH

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