Examlex
The nucleolus is a highly active region of the nucleus that is required for synthesis of ribosomes.
Cognitive-Developmental Theory
A theory proposed by Jean Piaget that outlines how children's ability to think and understand develops through various stages.
Formal Operations
The fourth stage in Piaget’s cognitive-developmental theory, characterized by the capacity for flexible, reversible operations concerning abstract ideas and concepts, such as symbols, statements, and theories.
Personal Fable
An egocentric belief held by adolescents that they are unique and invulnerable, leading to risk-taking behaviors and a sense of personal uniqueness.
Nicotine
A stimulant and addictive substance found in tobacco products that affects the nervous system.
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