Photosynthesis & Cellular Respiration Review

A tanker carrying weed killer sinks into a small bay that drains into the ocean. The algae (photosynthetic bacteria) in the bay were all killed. What gas would be expected to build up in the environment?

• Nitrogen

• Oxygen

• Carbon dioxide

• Hydrogen

Humans are clering vast areas of forest for agriculture. It has been predicted that if this is not stopped, we are in danger of running out of an atmospheric gas. What gas is provided by our forests?

• Nitrogen

• Oxygen

• Carbon dioxide

• Hydrogen

Why do many tree leaves change colours in the fall?

• Chlorophyll is replaced by other pigments

• Chlorophyll breaks down, revealing other pigments

• Chlorophyll changes colour as it wears out

• The plant makes new pigments used only in the fall

Within a chloroplast, light is absorbed in the

• stroma

• thylakoid membrane

• outer membrane

• thylakoid space

In the Calvin cycle, glucose is produced. What is the source of the oxygen atoms found in the glucose?

• carbon dioxide

• water

• atmospheric oxygen

• Rubisco

The source of oxygen atoms in the oxygen produced during photosynthesis is...

• carbon dioxide

• water

• glucose

• Rubisco

In which of the following situations would you least expect to find anaerobic respiration?

• a human brain cell is engaged in writing a test

• the inside of a bacterium living in a human intestine

• a runner's leg muscle during a marathon

• the bacteria at the bottom of a pond

Anaerobic respiration is less efficient than aerobic respiration, for this reason...

• aerobic respiration allows for rapid oxidation during strenuous exercise

• less ATP produced in anaerobic respiration

• only bacteria and yeast use anaerobic respiration

• blood carries more than enough oxygen to support aerobic respiration

In which of the following forms is energy immediately made available for use by living cells?

• ATP

• Glucose

• ADP

• Starch

In the process of chemiosmosis, what passes through the mitochondrial membrane?

• ATP

• Electrons

• Hydrogen ions

• NAD+