EOC Review #3

Front

What are the sources of adaptations in organisms?

Back

Adaptations come from both mutations that give an organism an advantage in its environment and genetic recombination during meiosis.

Front

What type of succession occurs after a forest fire?

Back

Secondary succession occurs after a forest fire.

Front

What is carrying capacity?

Back

Carrying capacity is the maximum population size of a species that an environment can sustain indefinitely without being degraded.

Front

How do animals obtain nitrogen?

Back

Animals get nitrogen by eating other organisms.

Front

What type of movement across a cell's plasma membrane requires energy?

Back

Active transport requires energy supplied by ATP.

Front

Define primary succession.

Back

Primary succession is the process of ecological change that occurs in an area where no soil exists, such as after a volcanic eruption.

Front

Define secondary succession.

Back

Secondary succession is the process of ecological change that occurs in an area where a disturbance has destroyed an existing ecosystem but left the soil intact.

Front

What is a mutation?

Back

A mutation is a change in the DNA sequence of an organism that can lead to new traits.

Front

What role do bacteria play in the nitrogen cycle?

Back

Bacteria convert atmospheric nitrogen into forms that plants can absorb and use.

Front

What is the difference between passive transport and active transport?

Back

Passive transport does not require energy and moves substances down their concentration gradient, while active transport requires energy to move substances against their concentration gradient.