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Cellular Respiration: The Three Stages A horizontal flowchart of cellular respiration showing three connected boxes left to right. Stage 1 Glycolysis takes place in the cytoplasm, where one glucose molecule is split into two pyruvate molecules and produces two ATP. Stage 2 Krebs Cycle takes place in the mitochondrial matrix, where pyruvate is broken down further, producing two more ATP and releasing carbon dioxide. Stage 3 Electron Transport Chain takes place on the cristae of the inner mitochondrial membrane, using oxygen to produce about twenty-six ATP and releasing water. Below the boxes the overall equation is shown: glucose plus oxygen yields carbon dioxide plus water plus about thirty ATP. Cellular Respiration: 3 Stages 1. GLYCOLYSIS (in the cytoplasm) Glucose ↓ 2 Pyruvate + 2 ATP (no oxygen needed) 2. KREBS CYCLE (in mitochondrial matrix) Pyruvate broken down to CO₂ Releases CO₂ + 2 ATP (loads up NADH/FADH₂) 3. ELECTRON TRANSPORT CHAIN (on the cristae) O₂ accepts electrons → H₂O + ~26 ATP Releases H₂O (needs oxygen!) Overall Equation: C₆H₁₂O₆ + 6 O₂ → 6 CO₂ + 6 H₂O + energy (~30 ATP) glucose + oxygen → carbon dioxide + water + ATP

Eukaryotic Cell Biology — Study Guide

Lesson Grade 6, 7, 8

A focused review companion to the main Eukaryotic Cell Biology lesson. Use this study guide to refresh on the essentials: every major organelle in one place, the three stages of cellular respiration, the two stages of photosynthesis, and how the two energy processes work as partners. Includes self-quiz items and links back to the main lesson for deep dives.

6.L.1.1 7.L.1.1 7.L.1.2 +1 more
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Types of Disease-Causing PathogensFour pathogen types in a grid. Bacteria: rod-shaped, treated with antibiotics (strep throat, tuberculosis). Viruses: spheres with spikes, not treated with antibiotics (flu, COVID-19). Fungi: branching filaments, antifungal treatment (athlete's foot, ringworm). Parasites: worm-like, antiparasitic treatment (malaria, tapeworm).Bacteria (single-celled)Examples:Strep throat,tuberculosisTreated with antibioticsViruses (non-cellular)Examples:Flu, COVID-19,chickenpoxNOT treated with antibioticsFungiExamples:Athlete's foot,ringworm, thrushTreated with antifungal medicinesParasitesExamples:Malaria (Plasmodium),tapeworm

S8 - Q4 - Unit 2 Introduction: Disease Agents

Lesson Grade 8

A 30-minute introduction to disease agents for 8th grade. Students classify the major types of pathogens, explain how diseases are transmitted, distinguish between epidemic and pandemic disease, and connect human health to environmental factors.

8.L.1.1 8.L.1.2 8.L.1.3
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Levels of organization in the body Five boxes connected by arrows showing that cells build tissues, tissues build organs, organs build organ systems, and organ systems build the whole organism. Small to large: how the body is built Cells basic unit Tissues like cells Organs heart, lung... Organ systems Organism you! Each level is made of the one before it.

The Body's Organ Tour

Lesson Grade 7

A 45-minute introductory tour of the major organs of the human body for 7th grade. Students learn the body's levels of organization, the one main function of each major organ across six systems, and the most common disease or malfunction of each, framed through structure and function.

LS.7.1.3 LS.7.1.4 CCC-6 +1 more
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