Biology EOC Review

Front

What is commensalism?

Back

A type of symbiotic relationship where one organism benefits while the other is neither helped nor harmed.

Front

What does it mean for an organism to be heterotrophic?

Back

It means that the organism obtains nutrients by consuming other organisms or their products.

Front

What is the probability of a child having freckles if both parents are heterozygous for freckles?

Back

75%.

Front

How does the reintroduction of wolves benefit an ecosystem?

Back

It can eliminate weak animals from a prey population, thereby decreasing competition for natural resources.

Front

What percentage of energy typically transfers from one trophic level to the next?

Back

10%.

Front

Define mutualism.

Back

A symbiotic relationship where both organisms benefit.

Front

What is parasitism?

Back

A relationship where one organism benefits at the expense of another.

Front

Explain the concept of competition in ecology.

Back

Competition occurs when two or more organisms vie for the same resources in an ecosystem.

Front

What is the role of decomposers in an ecosystem?

Back

Decomposers break down dead organic material, recycling nutrients back into the ecosystem.

Front

Define photosynthesis.

Back

The process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll.