Cells+and+Energy

Chapter 2 , Section 2 : Cells and Energy

This section's vocabulary words are photosynthesis, cellular respiration , and fermentation. The definitions can be found in the Glossary.

---2 ways to get energy: oxygen or no >
 * 1. Cellular respiration
 * Glucose breaks down into CO2 and H2O and energy is released
 * Most of that energy is stored as ATP
 * Energy is also released in the form of heat
 * Occurs in mitochondria
 * 2. Fermentation
 * 2 major types of fermentation
 * 1st type occurs in muscles
 * Produces lactic acid﻿ which creates muscle fatigue
 * Muscle cells can't always get the oxygen they need--they use fermentation
 * 2nd type occurs in bacteria
 * Produces carbon dioxide and alcohol
 * Photosynthesis is the process of using light from the sun and turning it into food
 * Nearly all energy that fuels life comes from the sun
 * Energy from the sun gives food to plants and organisms that eat the plants
 * Chlorophyll is the main pigment used in photosynthesis, gives a green color
 * Chloroplasts absorb the energy from the sun and use that energy to make food.
 * ATP is a molecule that gives energy to fuel activities of cells
 * Glucose + Oxygen → Carbon Dioxide + Water + Energy (ATP)
 * Being hungry means cells need energy



These are both pictures of photosynthesis. Through sunlight, water, and soil, the plant receives carbon dioxide and lets out oxygen. We found the first picture here. We found the second picture [|here.]

This diagram shows how photosynthesis and cellular respiration are related. Light goes into the chloroplast and the chloroplast then sends C6H12O6 (sugar) + O2 to the mitochondrion. Mitochondria release some of that as ATP, then send CO2 + H2O back to the chloroplast. We found this picture here.

media type="youtube" key="tSHmwIZ9FNw" height="390" width="480"

The video is a rhyming song about photosynthesis. It was made by NinjaStacie09. They deserve all credits.

 __**Useful Links**__

http://www2.yk.psu.edu/~sg3/ist311/games/team3/phasetwo.html

http://www.emc.maricopa.edu/faculty/farabee/biobk/biobookps.html

http://www.biology4kids.com/files/plants_photosynthesis.html

http://www.realtrees4kids.org/sixeight/letseat.htm - This website explains the process of photosynthesis very clearly, in simple words.