A. All living things are composed of four basic categories of macromolecules and share the same basic needs for life.
B. Living organisms acquire the energy they need for life processes through various metabolic pathways (primarily photosynthesis and cellular respiration).
C. Chemical reactions in living things follow basic rules of chemistry and are usually regulated by enzymes.
D. The unique chemical properties of carbon and water make life on Earth possible.
Related Courses
Related Access Points
Related Resources
Lesson Plans
Original Student Tutorial
Perspectives Video: Expert
Perspectives Video: Professional/Enthusiast
Presentation/Slideshow
Tutorials
Video/Audio/Animation
Original Student Tutorials Science - Grades 9-12
Explore how organisms gain usable energy and compare the two types of cellular respiration; aerobic and anaerobic. In this interactive tutorial, you'll also learn about reactants and products of both aerobic and anaerobic respiration.
Student Resources
Original Student Tutorial
Explore how organisms gain usable energy and compare the two types of cellular respiration; aerobic and anaerobic. In this interactive tutorial, you'll also learn about reactants and products of both aerobic and anaerobic respiration.
Type: Original Student Tutorial
Presentation/Slideshow
This presentation, a narrated PowerPoint, provides detailed information regarding photosynthesis and cellular respiration. It is provided by a teacher for his students, but is well-done and engaging enough to be useful for other students.
Type: Presentation/Slideshow
Tutorials
This Khan Academy video explains how oxidation and reduction reactions occur in cellular respiration. The chemical equation for cellular respiration is examined and broken down to show where each type of the reactions occur.
Type: Tutorial
This Khan Academy video explains how ATP is generated in the electron transport chain through the process of oxidative phosphorylation and chemiosmosis. It also explains the differences between oxidative phosphorylation and substrate level phosphorylation.
Type: Tutorial
This Khan Academy video explains how the NADH And FADH2 that were made during glycolysis and the Kreb's Cycle are used to generate ATP through the electron transport chain.
Type: Tutorial
This Khan Academy tutorial describes in detail the process of glucose being broken down into pyruvate during glycolysis. Glycolysis is the first biochemical pathway of cellular respiration.
Type: Tutorial
This Khan Academy video describes how the pyruvate produced in glycolysis undergoes oxidation to produce Acetyl CoA. The video then explains what occurs when Acetyl CoA enters the Kreb's cycle and how NADH and FADH2 are produced.
Type: Tutorial
This Khan Academy video describes how energy is extracted from the glucose molecule to make ATP. Each biochemical pathway involved in cellular respiration is discussed.
Type: Tutorial
This animation shows the process of glycolysis. The reactants, products, and the basic functions of aerobic and anaerobic cellular respiration are identified.
Type: Tutorial
This tutorial reviews the process of cellular respiration which is the set of metabolic reactions and processes that take place in the cells of organisms to convert biochemical energy from nutrients into adenosine triphosphate (ATP).
Type: Tutorial
The Krebs cycle is the central metabolic pathway in all aerobic organisms. This tutorial will help the learners understand the Krebs cycle.
Type: Tutorial
Parent Resources
Presentation/Slideshow
This presentation, a narrated PowerPoint, provides detailed information regarding photosynthesis and cellular respiration. It is provided by a teacher for his students, but is well-done and engaging enough to be useful for other students.
Type: Presentation/Slideshow
Tutorial
The Krebs cycle is the central metabolic pathway in all aerobic organisms. This tutorial will help the learners understand the Krebs cycle.
Type: Tutorial