Geochemical Cycles

All of the carbon in existence is continually recycled in the carbon cycle

• True
• False

Which of the following removes carbon from the atmosphere?

• Combustion
• Respiration
• Photosynthesis
• Death

Organisms that do not decompose can be buried and become what?

• water
• nutrients
• air
• fossil fuels

Which process converts carbon in the form of sugar into carbon dioxide gas?

• Bioremediation
• Photosynthesis
• Respiration
• Transpiration

Match the following definitions to the correct vocabulary words.

• Chloroplast

• process by which light energy is converted to chemical energy; produces sugar and oxygen from carbon dioxide and water

• Photosynthesis

• organelle composed of numerous membranes that are used to convert solar energy into chemical energy; found in plant cells

• Cellular Respiration

• process of producing ATP by breaking down carbon-based molecules when oxygen is present

Which process does not produce carbon dioxide?

• Photosynthesis

• Burning Fossil Fuels

• Animal respiration

• Plants decaying

During respiration, carbon moves from ________ to ________.

• plant;animal
• plant;sky
• animal;sky
• sky;animal

In the carbon cycle, animals can release carbon back into the cycle through __________ or through __________.

• burning . . . photosynthesis

• fixation . . . decomposition

• decomposition . . . photosynthesis

• respiration . . . decomposition

• respiration . . . photosynthesis

What is the equation for aerobic cellular respiration?

• C₆H₁₂O₆ + 6O₂ --> --> --> 6CO₂ + 6H₂O
• C₆H₁₂O₆ + 6CO₂ --> --> --> 6O₂ + 6H₂O
• 6 CO₂ + 6H₂O --> --> --> 6O₂ + C₆H₁₂O₆

Why does a plant have both chloroplast and mitochondria?

• The chloroplast makes glucose that the mitochondria uses to make ATP.

• Photosynthesis can not produce ATP

• When its dark photosynthesis stops and the mitochondria produces glucose

• Chloroplasts are found in the roots of the plant and mitochondria is found in the leaves.