What Is One Weakness of Observational Studies

question 78

Multiple Choice

What is one weakness of observational studies

• A) Parents can influence the observer.
• B) Children will behave normally when being observed.
• C) Children may alter their behavior because they are being observed.
• D) Researchers will seek to validate their hypothesis rather than remain unbiased.

---

Definitions:

Nephron

The functional unit of the kidney, responsible for filtering blood and producing urine.

Microvilli

microscopic cellular membrane protrusions that increase the surface area for absorption, especially in the epithelial cells of the intestines.

Proximal Convoluted Tubule

The portion of the nephron in the kidney involved in the reabsorption of water, ions, and nutrients from the filtrate.

Active Transport

The movement of substances across a cell membrane against their concentration gradient, requiring energy in the form of ATP.