Final answer:
In biology, populations undergo exponential growth when resources are unlimited, resulting in a J-shaped curve. However, when resources become limited, populations exhibit logistic growth, represented by an S-shaped curve. An example of logistic growth is yeast, which levels off its growth as it depletes nutrients.
Step-by-step explanation:
The subject of this question is biology, specifically the topic of population growth. When resources are unlimited, populations exhibit exponential growth, resulting in a J-shaped curve. However, when resources become limited, populations exhibit logistic growth, which is represented by an S-shaped curve. In logistic growth, population expansion decreases as resources become scarce, and it levels off when the carrying capacity of the environment is reached.An example of logistic growth is yeast, a unicellular fungus that exhibits the classical S-shaped curve when grown in a test tube. Its growth levels off as the population depletes the nutrients necessary for its growth.