UNIT 2 MARATHON RUNNER REVIEW QUESTION

Front

What is cellular respiration?

Back

Cellular respiration is the process by which cells convert glucose and oxygen into energy (ATP), carbon dioxide, and water.

Front

What is anaerobic respiration?

Back

Anaerobic respiration is a type of cellular respiration that occurs without oxygen, producing energy and byproducts like lactic acid or ethanol.

Front

How does oxygen availability affect cellular respiration in muscles?

Back

When oxygen levels are low, muscles switch from aerobic respiration to anaerobic respiration, which is less efficient in energy production.

Front

What is the role of the excretory system during cellular respiration?

Back

The excretory system eliminates waste products, such as carbon dioxide and water, produced during cellular respiration.

Front

How does dehydration impact muscle performance?

Back

Dehydration reduces the ability of muscles to contract effectively, leading to decreased strength and endurance.

Front

What is the circadian rhythm?

Back

The circadian rhythm is the body's natural internal clock that regulates sleep-wake cycles and various physiological processes over a 24-hour period.

Front

How does the circadian rhythm affect energy levels?

Back

The circadian rhythm causes energy levels to fluctuate throughout the day, which can impact endurance and performance in activities like marathons.

Front

Why does breathing rate increase during exercise?

Back

Breathing rate increases during exercise to supply more oxygen for cellular respiration in the muscles and to expel carbon dioxide.

Front

What is the primary function of the respiratory system during exercise?

Back

The primary function of the respiratory system during exercise is to facilitate gas exchange, providing oxygen to the body and removing carbon dioxide.

Front

What is ATP and its role in cellular respiration?

Back

ATP (adenosine triphosphate) is the energy currency of the cell, produced during cellular respiration to power various cellular processes.