Life Functions Quiz

Which life activity is not required for the survival of an individual organism?

• regualtion

• reproduction

• respiration

• nutrition

Internal regulation of the body is made possible through coordination of all body systems. This coordination is achieved mainly by

• circulatory and digestive systems

• respiratory and reproductive systems

• skeletal and excretory systems

• nervous and endocrine systems

The life function responsible for the coordination and control of all life activities in an organism is known as

• reproduction

• regulation

• nutrition

• excretion

As a result of their metabolic activities, many organisms produce harmful substances. These substances are eliminated by the process of

• ingestion

• pinocytosis

• excretion

• secretion

The disease known as malaria may result in a fever, a decrease in red blood cells, and an enlarged liver and spleen. These symptoms are evidence of

• hormone destruction

• a disruption of dynamic equilibrium

• a decrease in nerve cells

• an increase in thirst

The ability of the human body to keep blood sugar levels within a fairly narrow range, despite the intake of meals high in carbohydrates, is an example of

• genetic recombination

• digestion

• active transport

• homeostasis

Organisms combine simple molecules to form complex molecules by the process of

• regulation

• hydrolysis

• synthesis

• ingestion

The ability to grow in size is a characteristic of living organisms. Although an icicle may grow in size over time, it is considered nonliving because there is

• no way for the icicle to move away from heat

• no life activity present

• an interaction between the icicle and the environment

• an increase in matter, but no increase in the number of icicles

Which term is defined as all the chemical reactions that re required to sustain life?

• nutrition

• metabolism

• regulation

• synthesis

By which process is the potential energy of organic molecules transferred to a form of energy that is usable by the cells?

• respiration

• photosynthesis

• hydrolysis

• digestion