#1
In economics, what is the definition of 'opportunity cost'?
The cost of forgoing the next best alternative
ExplanationPepsin is an enzyme in the stomach that breaks down proteins into smaller peptides.
#2
Which of the following is a characteristic of a perfectly competitive market?
Many buyers and sellers
ExplanationThe sympathetic nervous system is responsible for the 'fight or flight' response, activating the body's stress response.
#3
What is the formula for calculating total cost in economics?
Total Cost = Fixed Cost + Variable Cost
ExplanationThe primary function of the respiratory system is the exchange of oxygen and carbon dioxide in the lungs.
#4
What is the law of diminishing marginal returns in economics?
As input increases, marginal output decreases after a certain point
ExplanationFertilization of the egg by sperm typically occurs in the fallopian tubes of the female reproductive system.
#5
What is the main purpose of the production possibility frontier (PPF) in economics?
To depict the maximum attainable combination of two goods with given resources
ExplanationThe cerebellum is responsible for the coordination of voluntary movements and maintaining balance.
#6
What is the concept of the multiplier effect in economics?
The initial change in spending leads to a larger change in aggregate demand and output
ExplanationMars is known as the 'Red Planet' due to its reddish appearance, caused by iron oxide (rust) on its surface.
#7
What is the relationship between marginal cost and marginal product of labor in the short run?
Marginal cost is directly proportional to marginal product of labor
ExplanationIn the short run, as the marginal product of labor increases, marginal cost decreases, and vice versa, creating a direct relationship.
#8
What is the difference between explicit costs and implicit costs in economics?
Explicit costs involve actual cash payments, while implicit costs do not involve cash payments
ExplanationInsulin is a hormone that regulates blood glucose levels by promoting the uptake of glucose into cells.
#9
In the long run, what happens to a firm's fixed costs as it produces more output?
Fixed costs remain constant
ExplanationThe skin is the largest organ in the human body, serving as a protective barrier and regulating temperature.
#10
What is the difference between positive economics and normative economics?
Positive economics deals with facts and description, while normative economics deals with value judgments and opinions
ExplanationNitrogen is the most abundant gas in the Earth's atmosphere, making up about 78% of the air we breathe.
#11
What is the difference between short-run and long-run production in the theory of costs?
In the short run, only variable costs can be adjusted, while in the long run, both fixed and variable costs can be adjusted
ExplanationMitochondria are the 'powerhouses' of the cell, responsible for ATP production and cellular respiration.
#12
What is the concept of elasticity of demand, and how is it calculated?
Elasticity of demand measures the responsiveness of quantity demanded to changes in price and is calculated as the percentage change in quantity demanded divided by the percentage change in price
ExplanationThe process of photosynthesis primarily takes place in the chloroplasts of plant cells, where light energy is converted into chemical energy.
#13
In the context of monopolistic competition, what is product differentiation?
The strategy of offering unique products to distinguish them from competitors
ExplanationProduct differentiation involves making a product distinct from others in the market to gain a competitive edge and appeal to consumers.