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Energy Notes Photosynthesis, Chemosynthesis and Cellular Respiration Marine Biology.

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Presentation on theme: "Energy Notes Photosynthesis, Chemosynthesis and Cellular Respiration Marine Biology."— Presentation transcript:

1 Energy Notes Photosynthesis, Chemosynthesis and Cellular Respiration Marine Biology

2 Warm Up 1.What process do plants do to make sugar? 2.What process do all organisms do to make energy? 3.Explain how photosynthesis and cellular respiration make a cycle. 4.Why would low levels of oxygen in the water pose a problem for marine life?

3 Review Photosynthesis CO 2 + H 2 O + Sun Light Gives you Carbohydrates + O 2 photo = light synthesis = to put together

4 Review Photosynthesis CO 2 + H 2 O + Sun Light Gives you Carbohydrates + O 2 Carbon dioxide Water Sugar (glucose) Oxygen

5 Review Photosynthesis CO 2 + H 2 O + Sun Light Gives you Carbohydrates + O 2 1. REACTANTS (what you start with) 2. PRODUCTS (what you end with)

6 Review Chemosythesis What is chemosynthesis? Chemosynthesis is used when sunlight is not available. What happens during chemosynthesis? During chemosynthesis, organisms use inorganic substances in place of sunlight to make sugar and oxygen. What is the equation for chemosynthesis? Inorganic substances + water+ carbon dioxide Oxygen + sugar

7 What organisms do chemosynthesis? Organisms that do not receive sunlight HAVE to do chemosynthesis in order to make food for themselves (bacteria or deep water organisms).

8 Review Cellular Respiration Cellular Respiration is just the opposite of photosynthesis! C 6 H 12 O 6 + O 2 ATP + CO 2 + H 2 O CO 2 + H 2 O + light C 6 H 12 O 6 + O 2 photosynthesis respiration

9 Review Cellular Respiration C 6 H 12 O 6 O 2 ATP CO 2 H 2 O Carbon dioxide Water Sugar (glucose) Oxygen Energy Reactants (whats needed) Products (whats produced)

10 Review Cellular Respiration Important facts for marine biologist: All living organisms break down sugars to get energy. This is called cellular respiration. What is glucose again? SUGAR!!

11 Energy Notes First, copy the questions (Cornell Note Style) Make sure you have the right answer before continuing. Record the correct answer on the right hand side. There are only 13 questions but you must understand/remember the material in every question!

12 Energy Unit Review Questions 1.What process releases energy from sugar? 2.What process absorbs energy from the sun to make sugar (food for the plant)? 3.Where does photosynthesis happen in the cell? 4.Where does cellular respiration happen in the cell? Cellular Respiration! Photosynthesis Chloroplast Mitochondria

13 Energy Unit Review Questions 5. What is the equation for cellular respiration? 6.What is the equation for photosynthesis? 7.What is chemosynthesis? 8.Explain transpiration and how water moves through a plant. O2+Sugar CO2+H2O+ATP ENERGY CO2+H20+SUN ENERGY O2+Sugar HAPPENS WITHOUT LIGHT!!! Organisms use inorganic substances to make sugar and oxygen Water moves in through the roots and evaporates through the leaves into the air.

14 Energy Unit Review Questions 9.What happens to the nitrogen in organisms when they die? 10. What is ATP? 11. Where in the cell is energy produced (ATP)? 12.Where in the cell is energy absorbed? They decompose and the nitrogen goes back into the ground for plants to use. Energy molecule Mitochondria Chloroplast

15 Energy Unit Review Questions 13. Explain how cellular respiration and photosynthesis make a cycle. Energy is cycled between photosynthesis and cellular respiration.

16 Dissolved Oxygen Dissolved Oxygen VideoVideo Use the following words to explain WHY marine organisms will suffer from low oxygen levels in the water: – Cellular respiration – Reactants – Products – Oxygen – Carbon dioxide – Water – Energy (ATP) – Energy (sunlight)

17 Dissolved Oxygen and Fertilizers (Run Off) Fertilizers videovideo After the video, please write a short summary of how fertilizers affect the oxygen levels in the water.

18 Chemosynthesis Practice Use the following HSA questions to practice our knowledge of energy transfer.

19 #1. Some types of bacteria live deep in the ocean where sunlight cannot reach. These bacteria use the energy stored in inorganic molecules to make sugars (HSA 2007). Which of these processes do the bacteria use to produce sugars? A.photosynthesis B.chemosynthesis C.aerobic respiration D.nitrogen fixation

20 #2. Some bacteria live in habitats without light. They produce their own food using inorganic substances from the environment. Which of these terms best describes this process? A.photosynthesis B.cellular respiration C.binary fission D.chemosynthesis

21 #3. In deep ocean trenches, bacteria produce organic materials from inorganic compounds through the process of A.respiration B.decomposition C.photosynthesis D.chemosynthesis

22 Phytoplankton and Zooplankton Watch video that discusses phytoplankton, What are phytoplankton? Why are they called primary producers? What are zooplankton? What do zooplankton eat? Draw a food web with phytoplankton and zoo plankton.

23 Eutrophication Watch video on What is algal bloom? What causes oxygen to be used up? After phytoplankton dies, what happens? What consumes the decomposing algae? Who uses up all the oxygen in the water? How do the numbers of these micro organisms effect the oxygen levels in the water? What is eutrophication?

24 Independent Research Read Oxygen in the Water on page 372. Summarize the reading. Make sure to answer the following questions in your writing: 1.How is oxygen produced? 2.What process requires the use of oxygen? 3.What is dissolved oxygen? 4.How do marine organisms take in oxygen? 5.Explain why there is a high concentration of DO in the bottom of the ocean. 6.Why are there high levels of DO at the surface of the water? 7.Explain the finding in the graph (figure 15-7) in your own words.

25 Show How Energy Cycles Draw a diagram in order to show how energy transfers between photosynthesis and cellular respiration.

26 Photosynthesis Lab

27 HSA Public Release Question Elodea, a freshwater plant, releases gas bubbles when it is placed in direct light. In an investigation, a student placed a lamp at different distances from an aquarium containing Elodea. The student counted the number of bubbles produced by the Elodea plant. His data are shown in the table below. What energy source is used by Elodea? A.heat B.light C.oxygen D.carbon dioxide

28 Reviewing Dissolved Oxygen Photosynthesis is discussed on page 109 of the Marine Science text. Add the following to your notes: What does photo mean? What does synthesis mean? What is an autotroph? What byproduct is made during photosynthesis? Explain how algae in the water provides some of the oxygen that you breathe.

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