Biology Regents Review

Front

What is the impact of removing a predator from a food web?

Back

Removing a predator, such as a fox, can lead to an increase in the populations of its prey, like rabbits and mice, which can disrupt the balance of the ecosystem.

Front

What organic compound is primarily used for stored energy in living organisms?

Back

Lipids are the organic compounds used for stored energy and are also important for cell structures.

Front

Which enzyme's activity decreases in both acidic and basic environments?

Back

Chymotrypsin's activity decreases in both acidic and basic environments.

Front

What process involves the bonding of simple sugars?

Back

The bonding of simple sugars to form a starch molecule is known as polymerization.

Front

How should a control group be treated in an experiment?

Back

The control group should be exactly the same as the experimental group except for the variable being tested; it does not receive the variable.

Front

What is a food web?

Back

A food web is a complex network of feeding relationships among various organisms in an ecosystem.

Front

Define 'lipids'.

Back

Lipids are organic compounds that are insoluble in water and include fats, oils, and waxes, serving as energy storage and structural components of cell membranes.

Front

What is the role of enzymes in biological processes?

Back

Enzymes are catalysts that speed up chemical reactions in biological processes by lowering the activation energy required.

Front

What is the difference between a control group and an experimental group?

Back

The control group does not receive the experimental treatment, while the experimental group does, allowing for comparison of results.

Front

What is the significance of biodiversity in an ecosystem?

Back

Biodiversity contributes to ecosystem resilience, stability, and productivity, allowing ecosystems to adapt to changes.