Photosynthesis and Cellular Respiration

In any food web, plants are considered to be producers. They convert sunlight (solar energy) into usable chemical energy (glucose). When we eat plants our bodies are using that chemical energy. What elements are rearranged to make glucose in plants?

• water and oxygen

• carbon, hydrogen, and oxygen

• carbon dioxide and sunlight

• carbon, oxygen, and solar energy

Respiration involves the breakdown of sugar. This process results in the production of energy for the cell. Assess the model to determine what gas must be present In order for cells to produce the MOST energy.

• nitrogen

• oxygen

• water

• CO2

The process of respiration is essential in the oxygen/carbon dioxide cycle. Respiration removes ______ from the atmosphere and produces and releases ______ to the atmosphere.

• glucose, oxygen

• oxygen, glucose

• carbon dioxide, oxygen

• oxygen, carbon dioxide

Based on the illustration, explain what happens to most of the mass gained by the plant cell through photosynthesis?

• The mass is returned to the soil.

• The reactants of photosynthesis are used as the reactants of respiration.

• The products of photosynthesis are shuttled back into the photosynthesis reaction as reactants.

• The mass produced by the photosynthesis reaction is used by the plant to fuel respiration and is turned into carbon dioxide, water, and energy.

The main result of photosynthesis is

• global warming

• food production

• CO2 production

• decreased oxygen

While observing an Elodea plant cell through a microscope, a student noticed some small, moving green disks. These organelles were MOST likely responsible for

• photosynthesis

• DNA

• protein creation

• cellular respiration

Plants provide energy to animals for their life processes by

• providing CO2

• serving as a food source

• getting energy from the sun

• providing shelter

Which factor would not increase the production of glucose by photosynthesis in plants?

• increased exposure to sunlight

• extra rainfall

• freezing temperatures

• increased CO2 levels

The process of cellular respiration:

• only occurs in animals

• breaks down food molecules to release stored energy.

• must occur before plants are able to carry out photosynthesis.

• is performed only by organisms that are incapable of photosynthesis.

What are the reactants of cellular respiration?

• energy and water

• glucose and oxygen

• oxygen and hydrogen

• carbon dioxide and water