U4- Cell Energy

A weightlifter is using heavy weights in short bursts for a competition. Because his muscle cells are not able to take in enough oxygen to make very much ATP the weightlifter begins to get fatigue in his muscles. Which of the following processes is most likely going on in the muscles of the weightlifter as he competes in his event?

• As the cells run out of oxygen, they will continue to make the same amount of ATP, because carbon dioxide, not oxygen, is required to make ATP.
• The flow of oxygen into cells will occur continuously as long as you are breathing. If muscles are becoming fatigued breathing needs to improve.
• As the cells run out of oxygen they switch to anaerobic respiration, which allows the cell to make small amounts of ATP in the absence of oxygen.
• As the cells run out of oxygen, they die off gradually and the weightlifter's muscles have fewer contracting muscle cells to continue working with.

Which of these is required for aerobic cellular respiration?

• carbon dioxide
• chlorophyll
• sunlight
• oxygen

Which process does this equation represent?

• Aerobic Respiration
• Nitrogen Fixation
• Photosynthesis
• Anaerobic Respiration

Some microorganisms, such as yeast, produce energy in oxygen free environment through the process of

• Mitosis
• Aerobic respiration
• Photosynthesis
• Anaerobic respiration

Which statement describes how photosynthesis and cellular respiration are interrelated?

• Oxygen is produced during the process of cellular respiration and are stored during photosynthesis.
• Carbon dioxide and water are released by cellular respiration and are used during photosynthesis
• Glucose is used during cellular respiration to produce food that is broken down during photosynthesis.
• Photosynthesis releases the energy that is stored during the process of cellular respiration.