EXS 411- Exam 2 University of North Carolina Wilmington | UPDATED Questions with 100% Verified Answers

EXS 411- Exam 2 University of North Carolina Wilmington | UPDATED
Questions with 100% Verified Answers

Question:
Cardiorespiratory Fitness (CRF)

Answer:
The ability of the circulatory and respiratory systems to supply oxygen to the muscles to
perform dynamic physical activity.


Question:
The cardiovascular system is responsible for...

Answer:
supplying oxygen and removing waste from the body.


Question:
Why does the cell need oxygen?

Answer:
For cellular respiration!
The cell uses oxygen to break down sugar from food.


Question:
What is ATP?

Answer:
- An energy-bearing molecule composed of carbon, hydrogen, nitrogen, oxygen, and
phosphorus atoms
- Used in all cellular actions requiring energy!


Question:
Muscle fibers can produce ATP through what 3 energy
systems?

Answer:
Creatine Phosphate
Fast Glycolysis

, Oxidative Phosphorylation


Question:
Creatine Phosphate
- Process?
- ATP yield?

Answer:
- Rephosphorylation of ATP:
- ADP + CP (high energy) ==> ATP + P
- ATP yield = 1 per cycle


Question:
Fast (Anaerobic) Glycolysis
- Process?
- ATP yield?

Answer:
- Glucose ==> pyruvate or lactate
- ATP yield = 2 (glucose) or 3 (glycogen)


Question:
Oxidative Phosphorylation
- Process?
- ATP yield?
- Where does it take place?

Answer:
- Krebs cycle and electron transport chain
- ATP yield = 38 or 39
- Occurs in mitochondria


Question:
Submaximal Exercise

Answer: