Photosynthesis & Cellular Respiration Chapter 5 Photosynthesis & Cellular Respiration Energy & Living Things, Photosynthesis and Cellular Respiration

Energy in Living Things Chloroplast contain chlorophyll Chlorophyll a pigmentation

Energy in Living Things Building Molecules That Store Energy Metabolism: builds and breaks molecules Photosynthesis: conversion of light energy into chemical energy Photo = LIGHT (think photos need it) Synthesis = BUILD/CREATE

Energy in Living Things Autotrophs: organisms that use sunlight or inorganic molecules to produce organic matter These organisms include: Plants – use sunlight Prokaryotes – use chemicals flowing out of earth vents on the ocean floor

Photosynthesis All energy used by organisms is traced back to the sun The type of energy used for storing that converted light energy IS: ATP

ATP  

Photosynthesis Chemical Equation:

Factors That Affect Photosynthesis Increase Light Intensity Increases (until saturation) Carbon Dioxide concentration (until max) Decrease Lowered or no amounts of carbon dioxide

Breaking Down Food for Energy Cellular respiration: releases energy that is contained in food to convert it to ATP (another form of energy) ATP is the source of energy for cells to carry out their daily activities for an organism to survive

Cellular Respiration – Cellular Energy Equation of Cellular Respiration:

Cellular Respiration – Aerobic Aerobic: metabolic processes that require O2

Cellular Respiration – Anaerobic Anaerobic: metabolic processes that do not require O2