Exam: GRE (Verbal)

Definition: Relating to a chemical process where a phosphate group is added to a molecule, often breaking down larger molecules into smaller ones.

Example: The phosphorolytic reaction is essential in the metabolism of carbohydrates.

Definition: Relating to or containing phosphorus, particularly in a form that has a lower valence than certain other phosphorus compounds.

Example: The phosphorous compounds are essential for plant growth.

Definition: A chemical element that is highly reactive and poisonous, found in nature mainly in phosphates. It is important for life and is used in various products like fertilizers and safety matches.

Example: Phosphorus is essential for plant growth and is commonly used in fertilizers.

Definition: A chemical group that consists of phosphorus and oxygen, often involved in biological processes like energy transfer.

Example: The phosphoryl group plays a crucial role in the formation of ATP, which is essential for energy transfer in cells.

Definition: A type of enzyme that helps break down glycogen into glucose phosphate, which is important for energy production in the body.

Example: Phosphorylase plays a crucial role in the process of converting stored glycogen into usable glucose.

Definition: To add a phosphate group to a molecule, often in biological processes.

Example: Enzymes can phosphorylate proteins to regulate their activity.

Definition: The process of adding a phosphate group to a molecule, usually to activate or deactivate its function, often involving enzymes.

Example: Phosphorylation is a key step in many cellular processes, including metabolism and signal transduction.

Definition: Relating to light or the part of water that sunlight can reach, allowing plants to grow.

Example: The photic zone of the ocean is where most marine plants thrive due to the sunlight.

Definition: The study or science related to light and its properties.

Example: Photics is an important field in understanding how light interacts with different materials.

Definition: The changes or damage to the skin caused by long-term exposure to sunlight and ultraviolet radiation, leading to issues like wrinkles and discoloration.

Example: Many people use sunscreen to prevent photoaging and protect their skin from sun damage.