What Would Happen If Photosynthesis Stopped Happening On Earth

What Would Happen If Photosynthesis Stopped Happening On Earth – Photosynthesis is the way in which primary producers (primarily plants) obtain energy through light energy. The energy obtained FROM the light can be used in the various processes mentioned below to create the energy that the plant will need to survive and grow.

Photosynthesis is a reduction process in which hydrogen is reduced by a coenzyme. This is in contrast to respiration where glucose is oxidized.

What Would Happen If Photosynthesis Stopped Happening On Earth

(the photochemical phase) and the Calvin cycle (the thermochemical phase). The diagram below summarizes the reaction in which light energy is used to initiate the reaction in its presence;

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Chloroplast where light is absorbed by chlorophyll; a type of photosynthetic pigment that converts light into chemical energy. It reacts with water (H

From this dissection of water, oxygen is released as a byproduct as the reduced hydrogen acceptor goes on to the second stage of photosynthesis, the Calvin cycle.

Basically, as water is oxidized (hydrogen removed) and photolysis energy is produced, which is required in the Calvin cycle.

Of chloroplasts. Carbon obtained FROM the inhalation of carbon dioxide enters this cycle, which is described below:

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In respiration, the substrate is manipulated into various carbon compounds to generate energy. In the case of photosynthesis, the following steps occur that create glucose for respiration FROM the carbon dioxide introduced IN the cycle;

The energy used in the Calvin cycle is the energy given off during photolysis. Glucose produced by GP can be used in respiration or as a building block

In general, this is how a plant produces energy, providing a rich source of glucose for respiration and the building blocks for more complex materials. While animals get energy FROM food, plants get energy FROM the sun.

Lotic communities have conditions that are quite harsh for typical plants. Thus, the diversity of plant species in many..

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The water cycle (also called the hydrological cycle) is a system of continuous transfer of water from the air, i.e. compounds that contain carbon atoms bonded to other elements, usually hydrogen, oxygen, or other carbon atoms

3 The Chemistry of Life All living things are made up of 6 basic elements: SPONCH Name the six elements of life: Sulfur Phosphorus Oxygen Nitrogen Carbon Hydrogen

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4 The Chemistry of Life Elements bond through chemical bonds to form compounds Name the 3 types of chemical bonds: Hydrogen bonds Covalent bonds Ionic bonds

5 The Chemistry of Life 4 major categories of organic molecules made up of elements SPONCH LIPIDS Elements: carbon, hydrogen, oxygen Structure: fatty acid chain Function: building blocks of cell membrane, energy storage Examples: fats, cholesterol

6 The Chemistry of Life 4 main categories of organic molecules made up of elements SPONCH PROTEINS Elements: carbon, hydrogen, oxygen, nitrogen Structure: amino acids coiled into specific shapes called proteins Function: some enzymes (speed up reactions) some are structures (hair, muscles, skin, etc.) and some are antibodies Example: enzymes, antibodies

7 The Chemistry of Life 4 main categories of organic molecules composed of the elements SPONCH Carbohydrates Elements: carbon, hydrogen, oxygen Structure: glucose – monosaccharides. Starch – polysaccharides Function: energy Examples: sugar and starch

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8 The Chemistry of Life 4 major categories of organic molecules made up of SPONCH NUCLEIC ACIDS elements Elements: carbon, hydrogen, oxygen, nitrogen, phosphorus Structure: long chains of nucleotides linked together Function: store hereditary information (DNA ), help build of proteins (RNA) Examples: DNA and RNA

9 The Chemistry of Life Define chemical reaction: The process by which chemical bonds between atoms are broken and new ones are formed, producing one or more different substances. Example of a chemical reaction NaCl  Na + Cl Reactants Products

10 The Chemistry of Life Define activation energy: The energy required to start a chemical reaction Define enzyme: Proteins that increase the rate of a chemical reaction.

11 The Chemistry of Life How does an enzyme affect the activation energy of a chemical reaction? Enzymes are catalysts, they reduce the activation energy required for a chemical reaction to occur. Factors that affect enzyme shape affect enzyme activity: Enzymes work well within very specific pH and temperature ranges. If the pH or temperature changes outside the range, the shape of the enzyme changes and no longer works to speed up the reaction.

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14 Cell Biology Plasma membrane: covers the cell and separates the cytoplasm from the environment; controls what enters and exits the cell. BOTH Nuclear envelope: Separates the nucleus from the cytoplasm. BOTH Nucleus: the control center of the cell; stores DNA and produces mRNA. BOTH Nucleoli: Located inside the nucleus, mRNAs are produced here. BOTH

15 Cell Biology Cytoplasm: The interior of the cell consists of a fluid that surrounds all the organelles. BOTH Mitochondria: Provides energy to the cell. ATP. BOTH Endoplasmic reticulum: Processes and modifies proteins produced in the nucleolus. BOTH

16 Cell Biology Golgi apparatus: packages proteins into vesicles for export out of the cell. BOTH Lysosomes: Contains digestive enzymes to clean the cell. BOTH Ribosomes: Make proteins. BOTH

17 Cell Biology Vacuole: Aids in digestion of materials. Stores nutrients and water. Maintains cellular pressure. Small ones are found in animal cells. LARGE CENTRAL is found in plant cells. Cell wall: supports and maintains shape, protects cell from damage, connects neighboring cells. PLANTS ONLY

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18 Cell Biology Chloroplast: Use light energy to make food (carbohydrates) through photosynthesis. FOR PLANTS ONLY Cytoskeleton: Helps maintain cell shape and helps move materials within the cell. BOTH Centriole: Helps in the formation of the spindle for the movement of chromosomes during mitosis. JUST AN ANIMAL

19 Cell Biology Explain the difference between prokaryote and eukaryote. Give examples of each. Prokaryotes are cells that have no true nucleus, no organelles, reproduce asexually, and are very small. An example is bacteria. Eukaryotes are cells that have a true nucleus, organelles, can reproduce asexually or sexually, and are relatively large. Examples are plants, animals, protists, fungi.

21 Cell Biology Explain how diffusion, osmosis, and facilitated diffusion work. Don’t forget to know which way the water flows through the membrane. Diffusion – a type of passive transport through membranes that does not require energy; particles move from areas of high concentration to areas of low concentration

22 Cell Biology Osmosis – a type of passive transport through membranes that does not require energy; Water molecules move from areas of high concentration to areas of low concentration. Facilitated diffusion – a type of passive transport through membranes that does not require energy; with the help of a protein carrier, the particles move from high to low concentration

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24 Cell Biology Photosynthesis 6H2O + 6CO2  C6H12O6 + 6O2 Cellular Respiration C6H12O6 + 6O2  6H2O + 6CO2 + energy

25 Cell Biology Define photosynthesis: The process that captures the energy of sunlight in the chloroplasts of plant cells and converts it into glucose (sugar), the food for life Define cellular respiration. The process that breaks down glucose to produce energy for use by cells.

26 Cell Biology How are photosynthesis and cellular respiration related? Cellular respiration is the exact opposite process of photosynthesis

27 Cell Biology Humans need oxygen to carry out cellular respiration and obtain ATP energy for our cells. What would happen to Earth’s oxygen levels if photosynthesis stopped? Because photosynthesis releases oxygen as a waste product (which is good for us because we need oxygen to do cellular respiration and get ATP energy), if photosynthesis stops, oxygen levels on Earth will drop… eventually killing the majority of users using oxygen for breathing. Cellular respiration releases carbon dioxide as a waste product, which is important because plants cannot carry out photosynthesis without carbon dioxide. So if respiration stops, no carbon dioxide will be released and therefore all producers will also die.

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28 Cell Biology What happens when the phosphate group is removed from ATP? Is energy released or stored? Compare the energy levels of ATP, ADP, and AMP to the energy levels of a battery. When phosphate is removed from ATP, energy is released for use by the cell. ATP is like a fully charged battery with 3 phosphates, ADP is a partially charged battery with 2 phosphates, and AMP is a dead battery with only 1 phosphate.

29 Cell Biology Draw and label the five stages of the cell cycle. What is the function of the cell cycle? The function of the cell cycle is the successful creation of new cells for the growth of organisms or to replace dead or damaged cells.

30 Cell Biology Compare and Contrast Mitosis and Meiosis in terms of steps and end products VENN DIAGRAM

For this website to work, we register user data and share it with processors. To use this website, you must agree to our Privacy Policy, including our Cookie Policy. Chloroplasts and mitochondria are parts of plant cells that have their own DNA and use themselves

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