Photosynthesis and cellular energy conversion take center stage in this Grade 11 Science worksheet, connecting the movement of energy through photosynthetic reactions with the role of cellular respiration. Students examine how plants convert light energy into chemical energy stored in glucose, how chloroplast reactions produce the materials needed for carbohydrate formation, and how cells make stored energy available for cellular work.

Follow Energy Through the Stages of Photosynthesis

The reading passage introduces photosynthesis in plants, algae, and some bacteria, with attention to chloroplasts and chlorophyll. Students explore the overall inputs and outputs of the process: carbon dioxide and water are used to produce carbohydrates such as glucose, while oxygen is released. This provides a foundation for examining how captured light energy becomes stored in organic molecules.

The worksheet distinguishes the light-dependent reactions from the Calvin cycle. Learners consider how chlorophyll absorbs photons and how the light-dependent reactions produce ATP and NADPH. Water splitting releases oxygen as a by-product. The Calvin cycle then uses ATP and NADPH to support carbon fixation and the formation of organic molecules that contribute to carbohydrate production. Students must connect these stages rather than treating them as separate, unrelated processes.

Connect Photosynthesis with Cellular Respiration

Photosynthesis stores energy in organic compounds, whereas cellular respiration breaks down glucose to transfer chemical energy into ATP. The passage explains how these processes complement each other through the exchange of matter and energy, including the overall use and release of carbon dioxide, water, glucose, and oxygen. Students are also prompted to consider how plants carry out both photosynthesis and cellular respiration.

Multiple-choice questions assess energy transformation, chloroplast structure, photosynthetic inputs, the functions of ATP and NADPH, oxygen release, and the relationship between photosynthesis and respiration. True-or-false statements reinforce key distinctions between the two photosynthetic stages and the complementary processes of energy storage and release. Short-answer prompts ask learners to explain how the stages of photosynthesis work together, why photosynthesis stores energy, and how these processes contribute to matter and energy exchange in ecosystems. A labeled diagram, categorization activity, and short-note task provide further opportunities to organize and communicate the concepts.

Materials Included

• Printable student worksheet: reading passage, multiple-choice questions, true-or-false statements, short-answer prompts, a labeled diagram, a categorization activity, and a short-note task.
• Separate PDF answer key: provides answers for checking student work.
• Student Notes lines: space at the bottom of the worksheet for additional notes.
• Teacher Guide: included in the answer key PDF, with Learning Objectives, Teaching Tips, Discussion Questions, and Common Mistakes.

Classroom Use

Use this Grade 11 photosynthesis practice worksheet during a metabolism and energy processes unit, after introducing chloroplasts and the stages of photosynthesis, or as review before an assessment. The comparison of light-dependent reactions and the Calvin cycle helps students organize the roles of each stage, while the connection to cellular respiration extends their reasoning from one process to the broader exchange of matter and energy. The separate answer key and teacher guidance provide practical support for checking responses and preparing follow-up discussions.

TEKS is named as the curriculum framework in the supplied details. No specific official standard code is provided, so this listing does not claim verified alignment to an individual TEKS standard.