The wood in a matchstick is made of cellulose, a polymer of glucose molecules. When you light the matchstick, heat and light are given off, indicating that an exothermic reaction is occurring.
There are two types of reactions:
1. Exothermic reactions: In these reactions, the reactants combine to form product and heat is liberated. Example, burning of fuel.
2.Endothermic reactions: In these reactions, the reactants combine to form product and heat gets absorbed from the surroundings. Example, photosynthesis in plants where the energy of the Sun gets absorbed.
Answer:
The correct answer is- osmosis.
Explanation:
Osmosis is the name given to the process by which water crosses a selectively permeable membrane. In osmosis water and other solvent move from a region that has a low concentration of solute to a region that has a high concentration of solute through a semipermeable membrane.
The osmosis of water across the cell is necessary to maintain the osmotic pressure of the cell by equalizing the concentration of solute in and out of the cell. Osmosis process does not require energy so it is a passive transport.
Therefore through osmosis water moves in and out of the cell through the selective membrane so the right answer is- osmosis.
How high it is above a surface determines the gravitational potential energy.
The answer is B.
Hope this helps!
Answer:
0.0084
Explanation:
Moreover, when the genes for the DNA repair enzymes themselves become mutated, ... an arsenal of editing mechanisms to correct mistakes made during DNA replication. ... After James Watson and Francis Crick published their model of the ... E. coli divides, each daughter cell will have, on average, 0.0084 new mutations.