Life Functions

Certain organisms are able to store energy from the sun in energy-rich compounds. Which event best illustrates this activity?

• A fox captures and eats a young rabbit.

• A caterpillar is eaten by a blackbird.

• Lettuce produces organic substances.

• Bacteria change organic material into simple nutrients.

Scientists studying ocean organisms are discovering new and unusual species. Which observation could be used to determine that an ocean organism is a plant cell?

• Chloroplasts are visible inside the cell.

• Digestive organs are visible upon dissection.

• The organism lives close to the surface.

• The organism makes molecules that help digest food.

The absorption and circulation of materials within an organism is a life function known as

• synthesis

• reproduction

• transport

• locomotion

In an amoeba, materials are taken from its environment and then moved throughout its cytoplasm. These processes are known as

• absorption and circulation

• reproduction and development

• growth and synthesis

• ingestion and excretion

ATP is a compound that is synthesized when

• chemical bonds between carbon atoms are formed during photosynthesis

• energy stored in chemical bonds is released during cellular respiration

• energy stored in nitrogen is released forming amino acids

• digestive enzymes break amino acids into smaller parts

Respiration is best described as a process by which

• necessary nutrients are circulated

• hydrogen is used to synthesize glucose

• metabolic wastes are absorbed

• chemical energy is converted into a usable form

Which statement regarding respiration is correct?

• Respiration in autotrophic organisms occur only during the day.

• Fungi and monerans carry out aerobic respiration only

• All living organisms carry out some form of respiration

• All autotrophs and heterotrophs require glucose and oxygen for respiration

When do green plants carry on cellular respiration?

• only during the night

• only during the day

• during both the night and day

• neither during the night nor during the day

Which statement most accurately describes the process of respiration?

• It occurs only in plants during daylight hours and usually involves an exchange of gases

• It occurs only in plants during the daylight hours and involves ingestion of preformed organic molecules

• It occurs continuously in the cells of all organisms and involves the synthesis of organic molecules

• It occurs continuously in the cells of all organisms and usually involves an exchange of gases

In which process are simple materials chemically combined to form more complex materials?

• synthesis

• pinocytosis

• hyrdolysis

• cyclosis