Which Feature Characterizes Gastrulation

question 147

Multiple Choice

Which feature characterizes gastrulation?

• A) Increased rate of mitosis
• B) Massive cell movements
• C) Formation of differentiated tissues
• D) Establishment of the dorsal-ventral body axis, but not the anterior-posterior axis
• E) Separation of tissue layers, preventing interactions between them

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Definitions:

Purely Competitive

A market structure characterized by a large number of sellers and buyers, homogeneous products, and no barriers to entry or exit.

Short-run Supply Curve

Represents the relationship between price and quantity supplied over a short period, assuming some inputs are fixed.

Marginal Cost Curve

A graphical representation showing how the cost to produce one additional unit of output changes as production increases.

Shut Down

A short-term decision by a firm to cease operations because operating costs exceed revenue, usually considered in the context of price being less than variable costs.