AP Bio Insta-Review: Unit 8

Front

What happens to dN/dt as K approaches N?

Back

Decreases, then remains constant.

Front

What type of signal do dogs use for marking territory?

Back

Chemical.

Front

Are goosebumps a vestigial structure to keep warm?

Back

True.

Front

What is altruism in biological terms?

Back

Selfless behavior that increases fitness of population.

Front

What property of water allows for cooling from sweat?

Back

High Heat of vaporization.

Front

Define 'carrying capacity' in an ecosystem.

Back

The maximum population size that an environment can sustain indefinitely.

Front

What is the role of enzymes in biological reactions?

Back

Enzymes act as catalysts to speed up chemical reactions without being consumed.

Front

Explain the concept of natural selection.

Back

Natural selection is the process where organisms better adapted to their environment tend to survive and produce more offspring.

Front

What is the significance of genetic variation in a population?

Back

Genetic variation increases a population's ability to adapt to changing environments.

Front

Define 'homeostasis'.

Back

Homeostasis is the process by which living organisms maintain a stable internal environment despite external changes.