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.
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Original Student Tutorials Science - Grades 9-12
At any instant in your life, millions and millions of enzymes are hard at work in your body as well as all around you making your life easier!
By the end of this tutorial you should be able to describe how enzymes speed up most biochemical reactions as well as identify the various factors that affect enzyme activity like pH and temperature.
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Original Student Tutorial
At any instant in your life, millions and millions of enzymes are hard at work in your body as well as all around you making your life easier!
By the end of this tutorial you should be able to describe how enzymes speed up most biochemical reactions as well as identify the various factors that affect enzyme activity like pH and temperature.
Type: Original Student Tutorial
Tutorials
This tutorial will help you to understand the role that vitamins play in human nutrition. Vitamins interact with enzymes to allow them to function more effectively. Though vitamins are not consumed in metabolism, they are vital for the process of metabolism to occur.
This challenging tutorial addresses the concept at a high level of complexity.
Type: Tutorial
Chemical reactions are constantly happening in your body -- even at this very moment. But what catalyzes these important reactions? This short video explains how enzymes assist the process, while providing a light-hearted way to remember how activation energy works.
Type: Tutorial