Laboratory Experiments Are Designed So as to

question 22

Multiple Choice

Laboratory experiments are designed so as to

• A) control for confounding variables
• B) establish external validity
• C) be as close as possible to a real-life experience
• D) justify keeping rats and pigeons in the department

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Definitions:

Myosin

A protein that, together with actin, is responsible for muscle contraction.

Metaphase

A stage of cell division (mitosis and meiosis) where chromosomes line up at the cell's equator before being separated into the daughter cells.

Cytokinesis

Cytokinesis is the division of the cytoplasm of a parental cell into two daughter cells, occurring immediately after nuclear division in the cell cycle.

Midplane

An imaginary plane that divides a body into two equal halves, commonly used in anatomy and developmental biology to describe symmetry.