Nine-Year-Old Desi Is in the _____ Stage of Cognitive Development

question 141

Multiple Choice

Nine-year-old Desi is in the _____ stage of cognitive development whereas her 15-year-old brother is likely in the _____ stage.

• A)preoperational; concrete operations
• B)sensorimotor; preoperational
• C)formal operations; sensorimotor
• D)concrete operations; formal operations

---

Definitions:

Calmodulin

A calcium-binding protein; when bound, it alters the activity of certain enzymes or transport proteins.

Calcium-Binding Protein

A type of protein that can bind calcium ions, playing crucial roles in cellular processes and signaling.

Phospholipase

An enzyme that hydrolyzes phospholipids into fatty acids and other lipophilic substances, playing key roles in cellular membranes' metabolism and signaling.

First Messenger

A signaling molecule that binds to a receptor at the surface of a cell, initiating a series of intracellular events that lead to a biological response.