Less Than ____% of the Bone Marrow Consists of Stem

question 73

Multiple Choice

Less than ____% of the bone marrow consists of stem cells.

• A) 0.5
• B) 1
• C) 10
• D) 50

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Definitions:

Concrete Operations

A stage in Piaget's theory of cognitive development in which children from about 7 to 12 years old develop logical thinking but still struggle with abstract concepts.

Zone Of Proximal Development

A concept in education and cognitive psychology referring to the difference between what a learner can do without help and what they can achieve with guidance and encouragement.

Vygotsky

A Russian psychologist who proposed the sociocultural theory of cognitive development, emphasizing the role of social interaction in learning.

Formal Operations

In Piaget's theory, the cognitive development stage (starting around age 12) where an individual gains the ability to think abstractly, reason logically, and form hypotheses.