Parent plan · Week 14 · Matter & Energy in Living Systems — launch and foundations — Life Science: Biology

Parent teaching plan · 36 weeks

Units to teach or revisit

Chapter 4 · Matter & Energy in Living Systems

Assigned readings

Follow the chapter question: How does sunlight support living systems without creating new matter?

This week’s goals

Read A plant’s oxygen record is not the whole energy story at this chapter’s launch, then use its linked unit explanations and source records in the assigned sessions.

Five flexible sessions, normally about 50–60 minutes. Unit study uses three sessions. The sample keeps a complete 90-minute extended sitting paired with about 30 minutes of correction; extend teaching when needed.

Session 1 · ATP & the Flow of Energy — observe and build

Illustrative evidence case. A supplied energy account conserves total input while only part remains in a selected useful output.

Your task

Read the chapter background and unit language. Make a first model, study the core explanation and Parts 1–2, then attempt their visual questions and checks.

  1. Prepare the assigned reading and identify the question.
  2. Trace the figures and retain a labeled first model or prior attempt.
  3. Complete the stated task before opening guidance.
  4. Compare reasoning with criteria, explain a correction and retain the revised evidence.
Hint and response guidance

Name the structures, quantities, system boundary and assumptions before selecting a mechanism.

No. Atoms are rearranged into products or cell material; energy is transferred through reactions and to surroundings. Yes. Producing organic matter and supplying many cellular processes through respiration are distinct activities.

  • Use the stated evidence and correct units.
  • Explain a biological mechanism or relationship.
  • Show intermediate reasoning with a labeled figure or calculation.
  • State a limitation and a useful revision/test.

Session 2 · ATP & the Flow of Energy — connect and apply

ATP hydrolysis can support an energetically linked change, such as a transport protein’s conformational cycle. The useful change depends on the overall reaction and coupling, not on energy being released by breaking one isolated bond. ADP and inorganic phosphate can be used to rebuild ATP through other energy-transferring processes. ATP therefore serves repeated short-term transfers rather than a perpetual source. Count a stated ATP demand separately from the food input or the rate of ATP production; molecule count and energy amount are different quantities.

Your task

Study Parts 3–4 and any named source records. Attempt the whole-unit application with labeled mechanisms, correct quantities and a limitation.

  1. Prepare the assigned reading and identify the question.
  2. Trace the figures and retain a labeled first model or prior attempt.
  3. Complete the stated task before opening guidance.
  4. Compare reasoning with criteria, explain a correction and retain the revised evidence.
Hint and response guidance

Name the structures, quantities, system boundary and assumptions before selecting a mechanism.

The pathway, reaction conditions, coupling and other energy transfers matter; ATP count is only one defined output. No. The complete account retains all 100 units; 35% refers only to the selected useful output.

  • Use the stated evidence and correct units.
  • Explain a biological mechanism or relationship.
  • Show intermediate reasoning with a labeled figure or calculation.
  • State a limitation and a useful revision/test.

Session 3 · ATP & the Flow of Energy — explain and transfer

Use the worked case and a changed condition to test independent understanding.

Your task

Study the illustrated worked case, attempt varied practice and the changed independent case, then revise the opening model and complete the exit check.

  1. Prepare the assigned reading and identify the question.
  2. Trace the figures and retain a labeled first model or prior attempt.
  3. Complete the stated task before opening guidance.
  4. Compare reasoning with criteria, explain a correction and retain the revised evidence.
Hint and response guidance

Name the structures, quantities, system boundary and assumptions before selecting a mechanism.

Efficiency is 72/240×100 = 30%; 168 units goes to other transfers/storage under the boundary. It is not destroyed, and identifying particular outputs requires a complete measured account.

  • Use the stated evidence and correct units.
  • Explain a biological mechanism or relationship.
  • Show intermediate reasoning with a labeled figure or calculation.
  • State a limitation and a useful revision/test.

Session 4 · Photosynthesis — observe and build

Illustrative evidence case. Light supplies energy to linked processes while different reactants supply atoms; a gas measurement can show only net transfer.

Your task

Read the chapter background and unit language. Make a first model, study the core explanation and Parts 1–2, then attempt their visual questions and checks.

  1. Prepare the assigned reading and identify the question.
  2. Trace the figures and retain a labeled first model or prior attempt.
  3. Complete the stated task before opening guidance.
  4. Compare reasoning with criteria, explain a correction and retain the revised evidence.
Hint and response guidance

Name the structures, quantities, system boundary and assumptions before selecting a mechanism.

No. It uses products and regulated conditions linked to them; the term does not mean an isolated unlimited night-time pathway. No. Oxygenic photosynthesis releases O₂ traced to water; source assignment needs mechanism/tracer evidence beyond the summary equation.

  • Use the stated evidence and correct units.
  • Explain a biological mechanism or relationship.
  • Show intermediate reasoning with a labeled figure or calculation.
  • State a limitation and a useful revision/test.

Session 5 · Photosynthesis — connect and apply

A pigment interacts with light at particular wavelengths. An absorption spectrum shows absorption versus wavelength, while an action spectrum shows a measured biological process versus wavelength under controlled conditions. Pigments and associated structures can broaden useful light capture, but absorbed light is not all converted into organic production. Leaf thickness, other pigments, light intensity and physiological conditions influence the outcome. A leaf’s visible color reflects light reaching the observer, not proof that the other wavelengths never interact.

Your task

Study Parts 3–4 and any named source records. Attempt the whole-unit application with labeled mechanisms, correct quantities and a limitation.

  1. Prepare the assigned reading and identify the question.
  2. Trace the figures and retain a labeled first model or prior attempt.
  3. Complete the stated task before opening guidance.
  4. Compare reasoning with criteria, explain a correction and retain the revised evidence.
Hint and response guidance

Name the structures, quantities, system boundary and assumptions before selecting a mechanism.

They measure different quantities; relating them requires controlled biological and optical conditions. No. It can continue at a near-steady rate while increasing the tested input no longer raises that rate.

  • Use the stated evidence and correct units.
  • Explain a biological mechanism or relationship.
  • Show intermediate reasoning with a labeled figure or calculation.
  • State a limitation and a useful revision/test.

Submit this week

Parent / teacher weekly conference

Discuss an actual attempt before opening guidance. Use written-response criteria and notebook evidence to choose support. These home-study sessions do not certify mandated investigations or school laboratory eligibility.

Browse all courses