Biology Semester 1 Final Review

Front

What is a density-independent limiting factor?

Back

A density-independent limiting factor is an environmental factor that affects a population regardless of its density, such as natural disasters like floods.

Front

What is a polar molecule?

Back

A polar molecule is a molecule that has a partial positive charge on one end and a partial negative charge on the other end, leading to an uneven distribution of charge.

Front

Who is considered the primary consumer in an ecosystem?

Back

The primary consumer is an organism that eats producers (plants), such as a grasshopper.

Front

True or False: The independent variable causes something to change.

Back

True.

Front

What is adhesion in the context of water?

Back

Adhesion is the property of water that causes it to be attracted to other substances, allowing it to stick to surfaces.

Front

What is cohesion in the context of water?

Back

Cohesion is the property of water that causes water molecules to be attracted to each other, leading to surface tension.

Front

What is the role of producers in an ecosystem?

Back

Producers, such as plants, convert sunlight into energy through photosynthesis, forming the base of the food chain.

Front

Define a food chain.

Back

A food chain is a linear sequence of organisms through which nutrients and energy pass as one organism eats another.

Front

What is the difference between a food chain and a food web?

Back

A food chain is a single pathway of energy flow, while a food web is a complex network of interconnected food chains.

Front

What is an ecosystem?

Back

An ecosystem is a community of living organisms interacting with their physical environment.