About This Chapter
Introduction to Biochemistry - Chapter Summary
How much do you know about biochemistry? This introduction to this branch of science can help you find out. Discover or refresh your knowledge of various aspects biochemistry, including how energy is transferred in cells, how light energy is absorbed and the Calvin-Benson Cycle. If you need additional details about these concepts, send your questions to our experts. When ready, test your knowledge by taking short quizzes and a chapter exam. In no time, you will understand the following:
- How environmental conditions affect the function of an enzyme
- Molecule types that regulate enzyme activity and functions
- Basics of cellular respiration
- Steps in the electron transport chain
- How chlorophyll absorbs light energy for photosynthesis
- Products, recants and steps of the light reactions
- How dark reactions and products of light reactions relate
1. Enzyme Activity & Inhibition: Structure, Substrates, pH & Temperature
Enzymes appreciate the right working conditions. Can you blame them? We all work best in the correct environment. In this lesson, we'll learn how substrate concentration, temperature, and pH affect enzyme activity and structure.
2. Enzymatic Reactions: Inhibition and Regulation
Enzymes are generally not allowed to run uncontrolled in a cell. While they are useful in catalyzing reactions, there is a time and place for everything. In this lesson, we'll discuss enzyme activators and inhibitors that regulate these reactions positively and negatively, respectively.
3. Cellular Respiration: Energy Transfer in Cells
Watch this short video to learn the basics about converting organic compounds into ATP, also known as cellular respiration. We'll look at an overview of the process.
4. The Electron Transport Chain: Products and Steps
In this lesson, we'll learn about the finale of cellular respiration. The electron transport chain uses products from the first two acts of glycolysis and the citric acid cycle to complete the chemical reaction that turns our food into usable cellular energy.
5. Chlorophyll: Absorbing Light Energy for Photosynthesis
Plants are clean, green, photosynthesizing machines. Using a specialized pigment called chlorophyll, plants are able to soak up energy from the sun and turn it into food. In this lesson, we'll start to learn why chlorophyll literally gets excited about a sunny day!
6. Photolysis and the Light Reactions: Definitions, Steps, Reactants & Products
In this lesson, we'll learn how electrons get excited during the light-dependent reactions of photosynthesis, jumping off photosystem reaction centers like they were trampolines! In addition, we'll learn how the splitting of water creates reactants for this part of photosynthesis while creating a little fresh air for us.
7. Dark Reactions of Photosynthesis: The Calvin-Benson Cycle
Photosynthesis starts out using the energy from sunlight to get things started, but it ends with the dark reactions, which don't need sunshine to complete sugar production. In the Calvin cycle, ATP and NADPH from the light reactions are used to produce sugars.
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Other chapters within the Science 101: Intro to Natural Sciences course
- Atomic Structure
- Fundamentals of Matter
- Introduction to Thermodynamics
- Mechanics of Physics
- Introduction to Relativity
- Fundamentals of Electricity
- Introduction to Magnetism
- Fundamentals of Waves, Sound and Light
- Space, The Solar System and the Universe
- Introduction to Atmospheric Science
- Geology Basics
- Introduction to Molecular Biology
- Cell Biology Fundamentals
- Molecular Genetics Overview
- Cell Processes
- Plant Biology Foundations
- Human Anatomy Overview
- Animal Reproduction, Growth and Development
- Fundamentals of Genetics
- Introduction to Ecology
- Basics of Evolution
- The Origin and History of Life On Earth
- Phylogeny and the Classification of Organisms
- Studying for Science 101