Answer:
The correct answer will be- the free energy change will be +13 kcal/mol.
Explanation:
The free energy change of a chemical reaction is the measure of the spontaneity of the reaction in which the negative value of free energy represents that reaction is exergonic while positive value represents that reaction is endergonic.
In the given question, if the free-energy change is 13 kcal/mol for the hydrolysis of ATP to ADP + Pi which releases energy used by the cells then reversal of the reaction that is the formation of ATP molecules from the ADP and Pi requires energy which will be the same energy required to break the ATP.
This shows that 13kcal/mol energy will be used but with a positive sign as the energy is needed or the reaction is endergonic.
Answer:
Explanation:
Greenhouse effect is a natural phenomena. The solar radiations from the sun enters the earth atmosphere where some of the sun light is absorbed by the atmosphere as well as the terrestrial land. The rest energy is reflected back to the space. This helps in maintaining the balance of thermal energy on earth. Human activities like burning of fossil fuels, land clearing and agriculture are increasing the amount of greenhouse gases released into the atmosphere. These gases are responsible for absorbing the thermal energy present in the sunlight. Hence, can be responsible for increasing the global temperature worldwide. This is called as greenhouse effect.
From cell, to tissue, to organs, to organ system, to organism.
In the nucleus of a cell.