ICT Biology Regents Final

Front

What is an abiotic factor?

Back

An abiotic factor is a nonliving component of an ecosystem that affects living organisms, such as sunlight, temperature, water, and minerals.

Front

Give an example of an abiotic limiting factor for fish in a lake.

Back

The amount of acid rain.

Front

What are abiotic factors in an ecosystem?

Back

Abiotic factors are the nonliving physical and chemical elements in the environment, such as air, water, soil, and climate.

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 independent variable; it does not receive the independent variable.

Front

What is the main substance responsible for ozone depletion?

Back

Chlorofluorocarbons (CFC's) are the main substances responsible for ozone depletion.

Front

Why is maintaining a constant internal environment important for enzymes?

Back

Maintaining a constant internal environment is important because changes in temperature and pH can alter the specific shape of enzymes, affecting their function.

Front

What is the definition of biotic factors?

Back

Biotic factors are the living components of an ecosystem that affect other living organisms, such as plants, animals, and microorganisms.

Front

What is the role of temperature in enzyme activity?

Back

Temperature affects the rate of enzyme reactions; too high or too low temperatures can denature enzymes, altering their shape and function.

Front

What is the difference between independent and dependent variables?

Back

The independent variable is the factor that is changed or controlled in an experiment, while the dependent variable is the factor that is measured or observed.

Front

What is the significance of pH in biological systems?

Back

pH is significant in biological systems because it affects enzyme activity, cellular processes, and the solubility of nutrients.