User:RyanPF/Bio Ch6

Random Stuff

 * Slow muscle fibers are better for marathons/longevity
 * Fast muscle fibers are better for sprinting

1. Explain why we breathe faster when we exercise.
Your muscles need more oxygen to operate.

2. Explain why aerobic metabolism is more important to an endurance athlete than anaerobic metabolism.
They have to keep their activity within their aerobic capacity so they can keep going the whole time.

3. Explain why an athlete switches from aerobic to anaerobic metabolism during strenuous exercise.
When an athlete pushes himself, the muscles need more oxygen than breathing can provide. Anaerobic metabolism doesn't use oxygen, it just breaks down glucose inefficiently to provide energy quickly.

4. Describe where photosynthesis occurs and explain why this process is important to most ecosystems.
It occurs in green cells within the leaves of plants. Plants (autotrophs) produce organic fuel (food) for consumers, like animals. Most ecosystems depend entirely on photosynthesis for food.

5. Define and compare autotrophs and heterotrophs, producers and consumers.
Autotrophs ("self-feeders") are organisms that make all their own organic matter from inorganic nutrients. Plants are autotrophs, also known as producers. Heterotrophs ("other-feeders") cannot make organic molecules from inorganic ones, so they must consume autotrophs for food. So they're called consumers.

6. Explain how the processes of photosynthesis and cellular respiration are complementary to each other.
Photosynthesis takes in carbon dioxide and water, and it puts out glucose and oxygen, among other things. Cellular respiration uses oxygen to help convert energy extracted from organic fuels like glucose. A byproduct of cellular respiration is carbon dioxide, which as we know, is an ingredient in photosynthesis. How 'bout them apples!

7. Compare the processes of cellular respiration and breathing.
They are closely related. The cell takes in oxygen from its surroundings and expels carbon dioxide. Breathing exchanges these same gases between your blood and the outside air.

8. Write and explain the overall equation for cellular respiration.
Glucose (C6H12O6) + 6 oxygen (O2) >>> 6 carbon dioxide (CO2) + 6 water (H2O) + Energy (ATP)