Organisms, Energy & Matter Level 2

Which of the following is NOT a way carbon dioxide returns to the atmosphere?

• decay of organisms

• emissions by factories

• photosynthesis

• respiration

Which of these statements is true of ecosystems?

• Animals do not travel from one ecosystem to another

• The total amount of energy in an ecosystem does not change

• Carbon and oxygen cannot be reused by organisms within the same ecosystem

• Matter destroyed in one ecosystem is absorbed by the surrounding environment

Kerri uses this model to study the carbon cycle. Which two processes release carbon compounds into the atmosphere?

• cellular respiration & combustion

• cellular respiration and photosynthesis

• photosynthesis and decomposition

• photosynthesis and combustion

Which process returns carbon compounds to the soil in the carbon cycle?

• decomposition

• nitrogen fixation

• cellular respiration

• photosynthesis

What are the substances that are necessary for cellular respiration to occur?

• glucose & carbon dioxide

• glucose & oxygen

• oxygen & carbon dioxide

• cellular energy & glucose

During cellular respiration, organisms convert different kinds of food into glucose. Cells then break down the glucose to provide energy for life activities. Which of these substances is also produced during cellular respiration?

• carbon dioxide

• protein

• oxygen

• sugar

Which is a product of the process shown above?

• carbon dioxide

• sugar

• sunlight

• water

Where does the energy that drives this process come from?

• oxygen

• sugar

• sunlight

• water

The coral reef ecosystem is full of interactions among organisms. Large fish called barracuda feed on smaller fish called parrot fish. The parrot fish feed on algae. Which of these living things would be responsible for releasing oxygen from the process of photosynthesis?

• parrot fish

• algae

• barracuda

• large fish

As an Arizona poppy plant carries out photosynthesis, which of the following would not occur during stage 1 of the process?

• Chlorophyll absorbs light energy.

• Oxygen is released as waste.

• Water splits into hydrogen and oxygen.

• Carbon dioxide is used to make glucose.