Exam: TOEFL

Definition: A type of molecule made up of two amino acids connected together by a bond.

Example: Dipeptides are important in the study of protein structure and function.

Definition: A colorless solid chemical compound used in making dyes, plastics, and other products.

Example: Diphenylamine is often used as a stabilizer in the production of certain plastics.

Definition: A chemical compound that has two phosphate groups, often involved in biological processes.

Example: Adenosine diphosphate (ADP) is an important molecule in energy transfer within cells.

Definition: A serious infectious illness caused by a specific bacteria, leading to symptoms like a sore throat, fever, and difficulty breathing, often accompanied by a false membrane in the throat.

Example: The doctor diagnosed the child with diphtheria after observing the symptoms.

Definition: Connected to a serious bacterial infection that affects the throat and can cause difficulty breathing.

Example: The diphtherial infection required immediate medical attention to prevent complications.

Definition: Relating to or having the qualities of a serious bacterial infection that affects the throat and can cause difficulty in breathing.

Example: The doctor diagnosed the patient with a diphtheritic infection that required immediate treatment.

Definition: Relating to or resembling a specific bacterial infection known as diphtheria.

Example: The doctor explained that the symptoms were diphtheroid in nature, indicating a possible infection.

Definition: A type of bacterium that looks similar to the one that causes diphtheria but does not produce the toxin associated with that disease.

Example: The doctor explained that the diphtheroid bacteria are often found in the throat but are not harmful like the diphtheria-causing bacteria.

Definition: A sound made by combining two vowel sounds in one syllable, where the sound starts as one vowel and glides into another, like the sound in the word 'coin'.

Example: In English, the word 'coin' contains a diphthong.

Definition: Related to a specific type of vowel sound that begins with one vowel and glides into another within the same syllable.

Example: In phonetics, a diphthongal sound can be heard in the word 'coin'.

Definition: To pronounce a vowel sound that starts as one vowel and glides into another within the same syllable.

Example: In some dialects, speakers tend to diphthongize certain vowel sounds, making them sound more complex.