Exam: GRE (Verbal)

Definition: The outer layer of a star that gives off light, particularly the sun.

Example: The photosphere of the sun is where sunspots can be observed.

Definition: Relating to the visible surface of a star, especially the sun, where light is emitted.

Example: The photospheric temperature of the sun is about 5,500 degrees Celsius.

Definition: A substance produced by plants during the process of converting sunlight into energy, which is used for growth and development.

Example: The plant stored the photosynthate in its roots for later use.

Definition: A biochemical system in chloroplasts that plays a key role in the process of converting light energy into chemical energy during photosynthesis.

Example: The photosystem is essential for plants to convert sunlight into energy.

Definition: Relating to the movement of organisms in response to light.

Example: Certain insects are phototactic, moving towards light sources.

Definition: The movement of a living thing towards or away from light.

Example: Many plants exhibit phototaxis by growing towards the sunlight.

Definition: A system that transmits images or documents over a distance using electrical signals, often associated with early forms of fax technology.

Example: The invention of phototelegraphy revolutionized communication by allowing documents to be sent quickly over long distances.

Definition: A type of treatment that uses light to help heal certain health problems, especially skin issues.

Example: The doctor recommended phototherapy to treat her skin condition.

Definition: Causing the skin to become more sensitive to light, especially sunlight, which can lead to damage like sunburn or blisters.

Example: Some medications can be phototoxic, making your skin more vulnerable to sunburn.

Definition: A harmful reaction that occurs when the skin or body is exposed to light, particularly sunlight, often resulting in skin damage or other negative effects.

Example: Some medications can cause phototoxicity, leading to severe sunburns even with minimal sun exposure.