D) ATP
Adenosine triphosphate (ATP) is known to be a complex organic compound that functions by providing energy to drive many biological processes in living cells. The building blocks of ATP is made up of Adenine, ribose sugar and three molecules of phosphate group. Furthermore, ATP is a molecular unit currency of intracellular energy transfer and large amount of energy is released during its hydrolysis.
Answer:
The citric acid cycle is fundamental to produce the energy needed for aerobic cell metabolism, thereby mutations in the enzymes involved in this metabolic pathway would be lethal to the individual
Explanation:
In aerobic organisms, the citric acid cycle (also known as the Krebs cycle), is a key metabolic pathway used to remove electrons and uses them in the electron transport chain in order to generate adenosine triphosphate (ATP), the energy currency of the cell. The citric acid cycle depends on eight enzymes that oxidize acetyl-CoA into two molecules each of carbon dioxide (CO2) and water (H2O). Thus, the citric acid cycle is a series of chemical reactions that are key to breakdown carbohydrates, fats and proteins into CO2 and H2O in order to produce energy (ATP).
The greenhouse effect is the natural warming of Earth's lower atmosphere and surface.
<u>Explanation:</u>
The idea of climate and temperature around the Earth begins with the sun. Approximately 30% of the sunlight reflects back to the cloud and ice from the surface.
The basic rise of the greenhouse effect is when the sun radiates around the earth.The greenhouse effect is the natural warming of Earth's lower atmosphere and surface. The 30% reflects back where the rest of the energy of the sun is collected by greenhouse effect and radiated to the surface again.
The radiation as well as the absorption of the heat is beneficial to the lower atmosphere as well as the surface as no other foundation can be reflected and radiated by the greenhouse effect.
