ConceptConceptDocsDocuments

AP Biology 3.4.A Photosynthesis and Chloroplast Structure

Practise AP Biology 3.4.A questions by connecting chloroplast structure, pigments, light reactions and carbon fixation with photosynthetic energy storage.

Syllabus
Effective Fall 2025
Course
AP Biology

Exam points

  • locate light reactions in thylakoids and carbon fixation in the stroma
  • explain how chlorophyll and pigments capture light for photosynthetic energy storage
  • connect CO2 and H2O inputs to carbohydrate and O2 production in photosynthesis

3.4.A—Describe the photosynthetic processes and structural features of the chloroplast that allow organisms to capture… question 1

[Maximum number: 3]

A cross section of a chloroplast showing membranes and the spaces between membranes is shown in Figure 1.

Figure 1. A diagram of the cross section of a chloroplast

Figure 1. A diagram of the cross section of a chloroplast

Question (a)

(a)

Describe the major process that takes place in this eukaryotic organelle.

[ 1 ]

Question (b)

(b)

Explain the function of the structure labeled with an X in Figure 1.

[ 1 ]

Question (c)

(c)

On the template in the space provided for your response, represent the location where carbon fixation takes place by writing " CF " and the location of the electron transport proteins by writing " ETP ".

[ 1 ]
All question bank results loaded