Exam: TOEFL

Definition: A person who specializes in the study of methods, especially in research or academic contexts.

Example: The methodologist developed a new approach to data analysis.

Definition: A system of methods and rules used in a particular area of study or activity.

Example: The researchers followed a strict methodology to ensure accurate results.

Definition: A chemical group made up of one carbon atom and three hydrogen atoms, often found in various organic compounds.

Example: Methyl groups are commonly used in the synthesis of pharmaceuticals.

Definition: A toxic and flammable gas used in making various products, including dyes and insecticides.

Example: Methylamine is often used in laboratories for chemical synthesis.

Definition: Describing a substance that has undergone a chemical process where a methyl group is added to it.

Example: The methylated compound showed different properties compared to its unmodified version.

Definition: Relating to the process of adding a methyl group to a molecule, often affecting its chemical properties or biological activity.

Example: The methylating agent is used in various chemical reactions to modify compounds.

Definition: To add a methyl group to a molecule, often affecting its chemical properties or biological activity.

Example: The researchers are methylating the compound to study its effects on gene expression.

Definition: The process of adding a methyl group to a molecule, often affecting gene expression and protein production in biological systems.

Example: Methylation plays a crucial role in regulating gene activity and can influence various biological processes.

Definition: A chemical group or radical that consists of two hydrogen atoms and one carbon atom, often found in various organic compounds.

Example: Methylene is commonly used in the production of plastics and other synthetic materials.

Definition: A toxic compound made of mercury and carbon, which can build up in the environment and is harmful to living organisms.

Example: Methylmercury is often found in fish and can pose serious health risks to humans who consume it.

Definition: A type of chemical compound that is derived from xanthine and includes substances like caffeine and theobromine.

Example: Caffeine is a well-known methylxanthine that many people consume daily in coffee and tea.