Platelet Aggregation Is

question 20

Multiple Choice

Platelet aggregation is

• A)The first step in the formation of a platelet plug
• B)Stimulated by ATP
• C)Stimulated by von Willebrand factor
• D)Stimulated by the conversion of arachidonic acid in platelet plasma membranes to prostacyclin
• E)Described by none of these choices

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Definitions:

Rhizobia

Soil bacteria that fix nitrogen after becoming established inside root nodules of legumes.

Infection Threads

Filamentous structures formed by certain bacteria during the infection process of plant roots, facilitating microbial entry.

Legume

(1) A simple, dry fruit that develops from a single carpel and splits open at maturity along two sutures to release seeds. (2) Any member of the pea family (e.g., pea, bean, peanut, alfalfa).

Soil Organisms

A diverse group of living entities in soil, including bacteria, fungi, insects, and earthworms, contributing to nutrient cycling and soil health.