Biology 1/18/11. New learning Targets & Table of Contents Chapter 9 Read and Define vocabulary 9.1 PS Lab 9.1 Notes 9.1. Energy in a Cell. Chapter 9. Cells Using Biochemical Energy. Essential for life: Active transport Movement Photosynthesis Protein Synthesis Cellular respiration
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Essential for life:
*ATP contains two,
high-energy phosphate bonds
*Also contains the nitrogen base adenine & a ribose sugar
It supplies YOU withENERGY!
By breaking the high- energy bonds between the last two phosphates in ATP
An Enzyme that breaks the phosphate bonds!
The reverse of the previous process occurs.
Another Enzyme is used!
Plants and some other types of organisms that contain chlorophyll are able to use light energy from the sun to produce food.
1. Light Dependent Reaction – convert light energy into chemical energy which then helps to fuel the next step
Light dependent rxn
Lost electrons are replaced from the splitting of water into 2H+, free electrons, and Oxygen
2H+ pumped across thylakoid membranePhotosynthesis Begins
GEL LIKE MATERIAL
Light independent rxn
Light dependent rxn
High-energy electrons are moved to Photosystem I through the Electron Transport Chain
Energy is used to transport H+ from stroma to inner thylakoid membrane
NADP+ converted to NADPH when it picks up 2 electrons & H+
Enzyme in thylakoid membrane called ATP Synthetase
As H+ ions passed through thylakoid membrane, enzyme binds them to ADP
Forms ATP for cellular
…….What is Aerobic? Anaerobic?........
C6H12O6 + 6O2
6CO2 + 6H20 + e- + 36-38ATP’s
Glycolysis occurs in the Cytoplasm
Krebs Cycle & ETC Takeplace in the Mitochondria
Occurs across Cristae
Occurs in Cytoplasm
Occurs in Matrix
*Takes place in the Cytoplasm
*Anaerobic (Doesn’t Use Oxygen)
*Requires input of 2 ATP
*Glucose split into two molecules of Pyruvate or Pyruvic Acid
*Also produces 2 NADH and 4 ATP Pyruvate is oxidized to Acetyl CoA and CO2 is removed
NETS: 3NADH, 1ATP, 1FADH2, & 2CO2
FADH & NADH were byproducts of the kreb cycle/citric acid cycle