Exam: IELTS

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: A picture made using a camera, usually showing a person, place, or event.

Example: I took a photo of the sunset at the beach.

Definition: To take a picture using a camera.

Example: She decided to photo the beautiful sunset at the beach.

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.

Definition: A type of organism that can make its own food using light energy and inorganic materials. Examples include green plants and certain bacteria that perform photosynthesis.

Example: Green plants are photoautotrophs because they use sunlight to create their own food.

Definition: The branch of science that studies how light affects living things and their biological processes.

Example: Photobiology helps us understand how plants use sunlight for photosynthesis.

Definition: Relating to the chemical processes that occur when light interacts with substances.

Example: The photochemical reactions in plants are essential for photosynthesis.

Definition: In a way that relates to the chemical reactions caused by light.

Example: The plants grow photochemically, using sunlight to convert carbon dioxide into oxygen.

Definition: A branch of science that studies how light affects chemical reactions and processes.

Example: Photochemistry plays a crucial role in understanding how plants convert sunlight into energy during photosynthesis.

Definition: Relating to a substance that can change color when exposed to light.

Example: The photochromic lenses in my glasses darken when I go outside.