Exam: GRE (Verbal)

Definition: Relating to a temperature scale where absolute zero is 0 K, and each unit is equivalent to one degree Celsius.

Example: The temperature in the lab was measured in kelvin to ensure precision.

Definition: A unit of measurement for temperature that starts at absolute zero, where each degree is equal to one kelvin. It is used in science and is part of the metric system.

Example: The temperature of the water was measured at 300 kelvin.

Definition: A type of phospholipid found in biological membranes, similar to cephalin, which is involved in various cellular processes.

Example: Kephalin plays a crucial role in the structure of cell membranes.

Definition: A surgical procedure that involves removing a portion of the cornea, which is the clear front part of the eye.

Example: The doctor recommended a keratectomy to improve the patient's vision.

Definition: A strong protein that makes up hair, nails, and the outer layer of skin.

Example: Keratin is essential for the health and strength of our hair and nails.

Definition: The process where skin cells change into a tough, protective material called keratin, which is found in hair and nails.

Example: Keratinization is essential for the formation of healthy hair and nails.

Definition: To produce a tough protein that is found in skin, hair, and nails, or to change into a form that contains this protein.

Example: As the skin cells mature, they begin to keratinize, forming a protective layer.

Definition: To change something into a tough protein called keratin, which is found in hair, nails, and skin.

Example: The skin cells will keratinize to form a protective barrier.

Definition: Made of a tough protein that is found in hair, nails, and the outer layer of skin.

Example: The outer layer of the animal's skin is keratinous, providing protection against the environment.

Definition: A condition where the cornea, the clear front part of the eye, becomes inflamed.

Example: The doctor diagnosed her with keratitis after she complained of eye pain and redness.

Definition: A type of skin growth that is usually benign and consists of a thickened area of skin, often caused by pressure or irritation.

Example: The doctor diagnosed the patient with a keratoma on his foot.

Definition: A surgical procedure that reshapes the cornea to improve vision by cutting a flap in the eye's surface, removing a portion of the cornea, and then reshaping it before putting it back.

Example: Many people choose keratomileusis to correct their vision instead of wearing glasses or contact lenses.