You Are a Student Working in the Laboratory of a Researcher

question 40

Multiple Choice

You are a student working in the laboratory of a researcher who studies rainbow trout. A power outage over the weekend results in temperatures of over 25°C in the large pools which house the fish. When you arrive Monday morning you notice the fish are swimming on their sides or swimming in spirals. What conclusions can you draw?

• A) The fish are suffering thermal stress.
• B) The fish are experiencing improper neuronal function.
• C) The affinity of acetylcholinesterase for acetylcholine is reduced.
• D) The temperature of the water is affecting fish enzyme shape and flexibility.
• E) All of the choices are correct.

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Definitions:

Short Run

A period in economics during which some factors of production are fixed, limiting the ability of a business to adjust to market changes.

Perfect Competitor

A market participant in perfect competition, characterized by a homogeneous product and no single buyer or seller having market control.

Short Run

A period during which at least one input, such as plant size or capital, is fixed and cannot be changed, affecting a firm's production capabilities.

Break-even

The point at which total cost and total revenue are equal, resulting in no net loss or gain.