ASSESSMENT - Life Science

Front

What is a food web?

Back

A food web is a complex network of feeding relationships among organisms in an ecosystem, illustrating how energy and nutrients flow through different trophic levels.

Front

What happens to predator populations if their prey disappears?

Back

If a prey species, like rabbits, disappears, predator populations that rely on them for food, such as kites, snakes, and owls, may decrease due to lack of food.

Front

What is homeostasis?

Back

Homeostasis is the process by which biological systems maintain stability while adjusting to changing external conditions.

Front

How do the muscular and digestive systems work together?

Back

The muscular system helps move food through the digestive tract, allowing for the breakdown and absorption of nutrients.

Front

What is cellular respiration?

Back

Cellular respiration is the process by which cells convert glucose and oxygen into energy, carbon dioxide, and water.

Front

What role does carbon dioxide play in photosynthesis?

Back

Carbon dioxide is taken in through the leaves of plants and combined with water to produce glucose and oxygen during photosynthesis.

Front

What is the function of the cell membrane?

Back

The cell membrane regulates the movement of substances in and out of the cell, helping to maintain homeostasis.

Front

What is the role of mitochondria in cells?

Back

Mitochondria are known as the powerhouses of the cell, as they break down glucose during cellular respiration to release energy.

Front

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

Back

A food chain is a linear sequence of organisms through which nutrients and energy pass, while a food web is a more complex network of interconnected food chains.

Front

What is the significance of the nucleus in a cell?

Back

The nucleus directs cellular activities, including the reproduction of cells and the expression of genes.