Exam: IELTS

Definition: To speak for a long time in a formal or grand way, often at the end of a speech.

Example: The politician began to perorate about the importance of unity and cooperation.

Definition: The final part of a speech or written work where the main points are summarized and emphasized, often intended to persuade or inspire the audience.

Example: The speaker delivered a powerful peroration that left the audience in awe.

Definition: A type of mineral made of calcium, titanium, and oxygen, often found in certain types of rocks and can appear in various colors like yellow, brown, or grayish-black.

Example: Scientists are studying the properties of perovskite to improve solar cell technology.

Definition: A type of chemical compound that contains a high amount of oxygen, often used in various chemical reactions and processes.

Example: Hydrogen peroxide is a common example of a peroxid used for disinfection.

Definition: A type of enzyme found mainly in plants that helps speed up the process of oxidation using peroxides.

Example: Peroxidase plays a crucial role in breaking down hydrogen peroxide in plant cells.

Definition: A chemical process where a substance is oxidized to form a peroxide, often resulting in significant changes in the chemical structure.

Example: The peroxidation of lipids can lead to cell damage and inflammation.

Definition: A chemical compound that contains a higher proportion of oxygen than other compounds, often used for bleaching or disinfecting.

Example: She used a peroxide solution to lighten her hair color.

Definition: A chemical compound that contains two oxygen atoms bonded together, often used as a bleaching agent or disinfectant.

Example: The dentist used a peroxide solution to whiten my teeth.

Definition: To treat or bleach something using a chemical compound that contains oxygen, often used in hair treatments and disinfection.

Example: She decided to peroxide her hair to achieve a lighter color.

Definition: Relating to a type of organelle in cells that helps break down fatty acids and detoxify harmful substances.

Example: The peroxisomal enzymes play a crucial role in metabolizing lipids.

Definition: A small structure within a cell that contains enzymes responsible for breaking down harmful substances, including hydrogen peroxide.

Example: Peroxisomes play a crucial role in detoxifying the cell by breaking down fatty acids and hydrogen peroxide.

Definition: A chemical group consisting of two oxygen atoms bonded together, often found in compounds called peroxides.

Example: The chemist explained the properties of the peroxy group in the new compound.