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Photosynthesis/Cells

Photosynthesis and Cellular Respiration

QuestionAnswer
What does photosynthesis do? Converts sun energy into chemical energy usable by cells
Autotrophs Self feeding, organisms that make their own food
Photoautotrophs Uses sun energy, makes organic compounds from light
Chemouatotrophs Uses chemical energy, makes organic compounds from chemical energy contained in sulfide or methane
Where does photosynthesis take place? In the chloroplast
Photosystem Light capturing unit
Electron transport system Electron carrier molecules that shuttle electrons
Heterotrophs Take energy from outside sources, can't make it's own energy
Cellular respiration Transformation of chemical energy in food into chemical energy cells can use
What can cellular respiration do? Breaks down glucose in the cytoplasm
Two types of cellular respiration: 1. Anaerobic cellular respiration (fermentation) 2. Aerobic cellular respiration
Anaerobic cellular respiration -No oxygen used -Some organisms thrive with little or no oxygen -No more ATP needed
Aerobic cellular respiration -Needs oxygen -Reactions occur in the mitochondria
Kreb's Cycle -Completes the breakdown of glucose -Production of only 2 more ATP -Loads up the coenzymes with H+ and electrons
Electron transport chain -Electrons and protons from the Kreb's cycle move to these steps (staircase) - Energy is released when electrons are dropped down stairs -Oxygen waits at bottom of staircase, and becomes water
What are the stages of cellular respiration in the order they occur? -Glycoisis -Citric acid cycle -Electron transport chain
Name the molecules that go into and come out of Glycolysis reactions In - sugar Out - pyruvate
What are the electron carrier molecules of respiration? FADH2 and NADH
Describe ATP production in aerobic 2 ATP made in glycolysis 2 ATP made in Kreb's cycle 32 ATP made in the electron transport chain
Describe ATP production in anaerobic respiration 4 ATP made 2 are used for a net gain of 2 ATP
Name the molecules that go into and come out of lactic acid and alcoholic fermentation In pyruvate, NADH and ATP Out lactic acid, NAD+ and ADP or ethyl alcohol, NAD+ and ADP
Why is anaerobic respiration faster than aerobic respiration? Fewer steps than aerobic respiration
Where does the energy for the glycolysis reaction come from? ATP
What does glycolysis mean? Sugar splitting
What process occurs in chloroplast? Photosynthesis
What process occurs in mitochondria? Aerobic respiration
What is the purpose of fermentation? Recycle NAD+ from NADH
List the organisms that use fermentation only and organisms that use aerobic respiration to break down sugar -Yeast and bacteria use fermentation only -Eukaryotes use aerobic respiration
What is the purpose of O2 in respiration? It is the electron acceptor at the end of the electron transport chain
What is the ancient pathway for producing ATP? Glycolysis
What are the two types of fermentation, how many ATP do they produce and in what organism do they occure? 1. Lactic acid fermentation, 2 ATP, bacteria and animals 2. Alcoholic fermentation, 2 ATP, yeast
What is the product of alcoholic fermentation? Ethyl alcohol
What is the product of lactic acid fermentation? Lactic acid
Of the stages of aerobic respiration, which one is involved in fermentation? Glycolysis
Why are their only two ATp produced by fermentation? Two of the four are used
What does aerobic mean? Uses oxygen
What does anaerobic mean? With out oxygen
Created by: kieren1