Table of Contents
When you burn a log in your fireplace you are converting what energy?
Each of these six forms can be converted, or changed, into the other forms. For example, when you have a fire burning in your fireplace, the chemical energy in the wood changes into thermal (heat) energy and radiant (light) energy.
What compound is the primary structural constituent of plant tissue forming the cell walls of stems?
The cellulose molecules provide tensile strength to the primary cell wall. Each molecule consists of a linear chain of at least 500 glucose residues that are covalently linked to one another to form a ribbonlike structure, which is stabilized by hydrogen bonds within the chain (Figure 19-70).
What compound is the primary structural constituent of plant tissue forming the cell walls of stems leaves and roots group of answer choices?
The most important constituent of plant tissue on a weight basis is cellulose. It is the primary compound of the cell wall in plants and comprises 40−80% of plant tissue (Aber and Melillo, 1991). Cellulose consists of a series of sugar units that are linked between the 1 and 4 carbon of adjacent sugar molecules.
What is defined as the number of protons plus the number of neutrons quizlet?
Mass Number. Is the sum of the protons plus the number of neutrons in the nucleus.
How much energy is in a log?
A standard cord of well-seasoned hardwood (stack of wood 4’X 4’X 8′ or 128 cubic feet) contains the heat equivalent of about 20 million BTU’s. By way of comparison this is more or less equivalent to the heat value in 145 gallons of #2 fuel oil or 215 gallons of LP gas.
When we burn wood the energy in the wood is transferred into?
In the case of burning wood, stored potential energy (in the form of chemical energy) in the log is released due to heating by other excited atoms. This chemical reaction is called combustion and requires oxygen. Combustion changes the potential chemical energy into kinetic energy in the form of heat.
What is the main structural component of cell wall?
The main structural component of plant cell wall is cellulose.
How cell wall is formed?
Cell wall biosynthesis begins during cell division in the cytokinesis phase through the formation of the cell plate in the middle of the cell. Eventually, the primary cell wall is assembled by the deposition of polymers of cellulose, hemicelluloses and pectin.
What cells have a cell wall?
A cell wall is a fairly rigid layer surrounding a cell located outside of the plasma membrane that provides additional support and protection. They are found in bacteria, archaea, fungi, plants, and algae. Animals and most other protists have cell membranes without surrounding cell walls.
Where is lignin found?
Lignin is found in the middle lamella, as well as in the secondary cell wall of xylem vessels and the fibers that strengthen plants. It is also found in epidermal and occasionally hypodermal cell walls of some plants.
Which of the following reactions represents cellular respiration?
The correct answer here is A. Sugar + oxygen will yield carbon dioxide + water + ATP. Cellular respiration requires the input of organic molecules, such as a sugar, so that it can oxidize these and generate ATP from it.
How do organic compounds differ from inorganic compounds quizlet?
What is the difference between an inorganic compound and an organic compound? Inorganic compounds do not contain both Carbon and Hydrogen. Organic compounds do contain both Carbon and Hydrogen. You just studied 3 terms!.
What is protons quizlet?
What is a proton? a subatomic particle that has a positive charge and that is found in the nucleus of an atom.
What is atomic weight quizlet?
Atomic Weight. the average mass of all isotopes of an atom.
What is the sum of the neutrons plus protons equal to quizlet?
The mass number is the sum of protons and neutrons in the nucleus of an atom.
Are log homes warm?
Even though logs have their own form of insulation and are considered to be four times warmer than concrete blocks, six times warmer than brick and fifteen times warmer than stone, there is still need for a secondary heat source.
Are log homes efficient?
Log cabins are a perfect solution for any family looking to go green on their outdoor retreat. A log home’s energy efficiency is based on the wood’s insulation properties and its thermal mass. Testing has shown that log homes often are more energy efficient than conventional homes boasting higher R-values.
How is wood turned into energy?
Certain electric power plants in the United States and the rest of the world burn wood to generate electricity. Like coal and fuel oil, wood is burned in a boiler that heats water into steam. The steam then spins a turbine connected to an electric generator.
Is a log burning in a fireplace an example of electrical energy?
Potential energy Batteries, biomass, petroleum, natural gas, and coal are examples of chemical energy. Chemical energy is converted to thermal energy when people burn wood in a fireplace or burn gasoline in a car’s engine.
When a log is burned We are using energy?
In the case of burning wood, stored potential energy (in the form of chemical energy) in the log is released due to heating by other excited atoms. This chemical reaction is called combustion and requires oxygen. Combustion changes the potential chemical energy into kinetic energy in the form of heat.
What happens when we burn wood?
When wood is burned, oxygen and other elements in the air (mainly carbon, hydrogen and oxygen) react to form carbon dioxide that is released into the atmosphere, while the minerals turn into ashes. Thus the carbon is left to turn into charcoal.
