Chapter 3 Section 4 Flashcards
What is respiration?
The process by which cells obtain energy from glucose
Why is respiration important?
It provides cells with energy they need to carry out their functions.
Why do you think muscle cells have many mitochondria?
The mitochondria supply a great amount of energy for movement.
Where does the first and second state of respiration take place and what does happens there?
Stage 1: Cytoplasm - sugar is broken down into smaller sugar molecules, none to little energy is released and no oxygen is used.
Stage 2: Mitochondria- The smaller molecules are broken down even smaller and combined with oxygen to produce water and carbon dioxide.This releases large amounts of energy.
Do you think plants have mitochondria? Why?
Yes -
In which stage is oxygen involved?
Stage 2
How do most animals get rid of carbon dioxide
by exhaling
How do plants get rid of oxygen and water vapor?
through the stomata
What is the equation for RESPIRATION?
C6H12O6 +6O2–> 6CO2+6H2O+energy!
What is the process in which energy is released without using oxygen?
Fermentation
What are the products of alcoholic fermentation
alcohol
carbon dioxide
energy
What is the product of lactic-acid fermentation?
Lactic acid
How would athletes be affected if fermentation could not take place?
If an athlete’s muscle ran out of oxygen and fermentation did not occur, the athlete would not be able to continue the activity.
Is fermentation likely to take place during a long walk or short run? Explain.
Short run because the athlete is pushing the muscles very fast, so the muscles will use up oxygen sooner.
Compare and contrast fermentation and respiration
They both produce energy.
Fermentation does not use oxygen and uses less energy.
Respiration uses oxygen and produces more energy.
