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Hole's Human Anatomy and Physiology15th EditionDavid Shier, Jackie Butler, Ricki Lewis 1,950 solutions The Elements of Life In biology, the elements of life are the essential building blocks that make up living things. They are carbon, hydrogen, nitrogen, oxygen, phosphorus, and sulfur. The first four of these are the most important, as they are used to construct the molecules that are necessary to make up living cells. These elements form the basic building blocks of the major macromolecules of life, including carbohydrates, lipids, nucleic acids and proteins. Carbon is an important element for all living organisms, as it is used to construct the basic building blocks of life, such as carbohydrates, lipids, and nucleic acids. Even the cell membranes are made of proteins. Carbon is also used to construct the energy-rich molecules adenosine triphosphate (ATP) and guanosine triphosphate (GTP). Hydrogen is used to construct the molecules water and organic compounds with carbon. Hydrogen is also used to construct ATP and GTP. Nitrogen is used to construct the basic building blocks of life, such as amino acids, nucleic acids, and proteins. It is also used to construct ATP and GTP. Oxygen is used to construct the basic building blocks of life, such as carbohydrates, lipids, and nucleic acids. It is also used to construct ATP and GTP. Phosphorus is used to construct the basic building blocks of life, such as carbohydrates, lipids, and nucleic acids. Solution Solar -------> Chemical potential --------> heat --------> kinetic----> electrical The energy transformations of a hydro-electric power plant Solar-----> gravitational potential----->kinetic---->electrical Water in the oceans of the world absorb solar heat energy. This heat energy causes the evaporation of many billions of tons of water around the world. The resultant water vapour rises high into the atmosphere where it condenses back into water and falls as rain. This water is trapped in man-made dams and used to turn huge turbines that spin the generators to create electrical energy. Click to hide solution Photosynthesis The thermochemical equation above shows that the process of photosynthesis is an endothermic reaction. Energy is absorbed from the surroundings and transformed into chemical potential energy in the bonds of the product molecules. The source of energy for this reaction is the Sun. The equation tells us that for evey 6 mole of carbon dioxide that reacts with 6 mole of water 2803 kilojoules of energy is needed. The process of respiration is simply the reverse of photosynthesis. Respiration is an exothermic reaction with the release of heat energy. The reaction is shown below.
Hide this information Energy transformations We know that energy can not be created or destroyed but it can change from one form into another. We see examples of such transformations every day. We will now try some exercises. All energy on Earth has originated from the Sun. We change the many forms of energy into electrical energy to drive our modern cities and to maintain our standard of living. There are many different types of power stations, two of which are coal fired and hydro-electric power plants. Although both coal-fired and hydro-electric power plants use generators to produce electricity it is the method each uses to spin the turbines driving the generators that is different. Consider the animation above, showing the process of photosynthesis. This is a process that requires energy in order to proceed. It is therefore said to be endothermic. 1) Where does the energy to drive the process of photosynthesis come from? 2) What type of energy is solar energy converted into? 3) What is the advantage of chemical energy over solar energy? 4) How is energy passed on from organism to organism in a food chain? 5) The chemical word equation for photosynthesis is given below The sugar is used by the plants as food and as a structural material to from wood. i) Where does the heat energy given off when burning wood come from ? ii) What is the ultimate source of the heat energy given off when burning wood ? ContinueWhat chemical reaction is the reverse of photosynthesis?Hence, respiration is said to be the reverse of photosynthesis.
What are the products back of photosynthesis?During photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) from the air and soil. Within the plant cell, the water is oxidized, meaning it loses electrons, while the carbon dioxide is reduced, meaning it gains electrons. This transforms the water into oxygen and the carbon dioxide into glucose.
What are the 2 end products from the photosynthesis reaction?The products of photosynthesis are glucose and oxygen.
(This is good news for organisms like humans and plants that use oxygen to carry out cellular respiration!) Oxygen passes out of the leaves through the stomata.
What are the 4 end products of photosynthesis?The by-Product of Photosynthesis is (1) CO2 (2) H20 (3) Glucose (4) O2.
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