Cells are open systems that exchange matter and energy with their surroundings. Which of the following best explains why plant cells require sunlight to make organic compounds, according to Gibbs’s theory of free energy? The photosynthetic reaction releases free energy to the surroundings. The photosynthetic reaction’s free energy is in equilibrium. The reactants of photosynthesis have less free energy than the products. The change in free energy (∆G) of the photosynthetic system is less than zero.

In photosynthesis, which of the following is NOT true about the light-dependent (“light”) reaction? In photosynthesis, which of the following is NOT true about the light-dependent (“light”) reaction? Glucose is synthesized from CO2 and water during the light-dependent reaction The light-dependent reaction converts light energy to chemical energy stored in ATP  The light-dependent reaction (non-cyclic) captures electrons in NADPH  Light-excited electrons in chlorophyll provide the energy for ATP production None of the other four answers (All are true of the light-dependent reaction)

For the following questions, choose one to discuss: chloroplast/photosynthesis State at the outset which one you will discuss.  A) What role do proton gradients play in the process of photosynthesis proton gradients allow B) Where are proton gradients formed? Within what structures are they seen in chloroplasts How do the structures help them to maintain a gradient?  C) Explain where and how the chloroplast or mitochondria uses passive transport and active transport to complete photosynthesis or cellular respiration.

Place numbers beside the statements below to indicate the order of events occurring in the light reactions.   I know for sure that 1 and 8 are correct, but the rest I’m not too confident about. I attached both my work and a blank copy.

Complete the following table to compare the electron-transport phase of cellular respiration with the light-dependent reactions of photosynthesis.

Fill in the table below. In the first 2 columns, specify what you are comparing and contrasting in Oxidative Phosphorylation and Photosynthesis. In the second 2 columns describe in a 1-3 sentences, how they are the same and how they are different.

Based on this absorbable spectrum which of the following wavelengths are not efficient in driving photosynthesis. Please look  at picture and pick. Thanks

Light Reactions Dark Reactions Sugar Chloroplast Light ATP NADPH Calvin cycle NADP ADP Granum H,0 co, Figure 7.3. Processes of photosynthesis. The light reactions directly require light energy from the sun. The "dark reactions" are driven by the high energy electrons produced by the light reactions. Which part of photosynthesis do you think they call the synthesis reactions?

Which among the following statements is INCORRECT? The first event in the Calvin cycle is the attachment of carbon dioxide to the five-carbon RuBP molecule, which forms a six-carbon molecule that breaks down into two 3PG molecules. The first event in the Calvin cycle is the attachment of carbon dioxide to the five-carbon RuBP molecule, which is a reaction assisted by large quantities of RuBP carboxylase enzyme. The first event in the Calvin cycle is the attachment of carbon dioxide to the five-carbon RuBP molecule, which decreases cell carbon dioxide levels, which increases the diffusion gradient. The first event in the Calvin cycle is the attachment of carbon dioxide to the five-carbon RuBP molecule, which immediately becomes a six-carbon sugar that is the base for starch, sucrose, cellulose, etc.

After electrons are raised to high energy levels in photosystem II, they travel down an electron transport chain.  As they are stepped down in energy, the lost energy is used to power which process.      The pumping of high energy electrons into the intermembrane space.  This creates a large difference in concentration and in electric charge between the intermembrane space and the lumen of the thylakoid.  When these high energy electrons rush back into the thylakoid lumen, they are forced to travel through one of the ATP synthase molecules that sits embedded in the thylakoid membrane.  ATP synthase uses the flow of hydrogen ions to phosphorylate ADP, converting it to ATP.     The pumping of hydrogen ions into the stroma.  This creates a large difference in concentration and in electric charge between the stroma and the lumen (watery interior) of the thylakoid.  When When the hydrogen ions in the stroma rush back into the thylakoid lumen, they are forced to…