Biology (Semester One) Retention Assignment

Front

What is the primary role of producers in an ecosystem?

Back

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

Front

Which organelle is responsible for producing ATP during cellular respiration?

Back

Mitochondria.

Front

What is the function of proteins embedded in the phospholipid bilayer of a cell membrane?

Back

They form pumps or channels that allow molecules to move in and out of the cell.

Front

What happens to a food web if a key species, like the grasshopper, is removed?

Back

The removal of a key species can disrupt the food web, affecting organisms that rely on it for food.

Front

What is DNA replication?

Back

DNA replication is the process by which DNA makes an exact copy of itself.

Front

What is the difference between cellular respiration and photosynthesis?

Back

Cellular respiration converts glucose into ATP using oxygen, while photosynthesis converts sunlight into glucose using carbon dioxide and water.

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 role of decomposers in an ecosystem?

Back

Decomposers break down dead organic matter, recycling nutrients back into the soil.

Front

Explain the term 'trophic level'.

Back

A trophic level is a position in a food chain or food web, defined by how an organism obtains its energy.

Front

What is the significance of biodiversity in an ecosystem?

Back

Biodiversity increases ecosystem resilience, productivity, and stability.