AP Biology - Photosynthesis Study Guide

Chapter 10

Being that this is tightly connected to Respiration, one of the key things you should be familiar with are the similarities and differences to aerobic respiration. This would extend to include purposes of the different processes (think of the light dependent and Calvin cycle and Krebs and Ox. Phosph. as different processes), the reactants/products, the organelle structure, the organelle components

On a related note, what are the purposes of the light dependent and Calvin cycles?

You should also understand the mechanisms behind how specifically photons of light trigger the series of events that ultimately leads to generation of sugars.

Understand the nature of autotrophs verses heterotrophs.

Know the products and reactants of each part of photosynthesis. Know the different phases of each part of photosynthesis.

Understand ecologically why photosynthesis is so important (not just for the food sources…)

Why is hot weather so detrimental to C3 plants? What are the tradeoffs a plant must make in arid regions?

How are C3, C4 and CAM plants all similar and different?

Structurally, know the different parts of the chloroplast and how the shape of these parts (compartmentalization) is related to their function.

Be able to differentiate the two photosystems, and understand the significance of cyclic and noncyclic electron flow within the light-dependent reactions (what is the purpose of each). Where do the electrons come from in each? What is the significance of this? How does this change in cyclic electron flow?

You should know all of the terms from the chapter and their definitions.

What is photorespiration? Why is it believed to be an evolutionary relic? How big of a problem is this for plants? For farmers?

What is the function of Rubisco?

What is PEP Carboxylase? Why is it important to certain plants?

How are different wavelengths of light different for photosynthesis (for example why does P680 split water while P700 doesn’t)?

Why do leaves look green?

What are the different categories of plant pigments?

Since so many of you (all of you) omitted the formula for respiration on the last essays, you should probably also know the formula for photosynthesis.

What is photoexcitation? Be able to describe what happens when a photon strikes a molecule of chlorophyll.

What is meant by the term photophosphorylation?

Also, you should know the experiments that led biologists to recognize the source of oxygen for the O2 that plants produce.

As always, this is simply a guide, not a comprehensive list of all that will be on the test…