Summarize the two stages of cellular respiration. Be sure to explain where in the cell each stage occurs.
Answers
Answer:
Use (available here) and the CK-12 Curriculum Materials License (available here) instead of the previously used CC BY-NC license.
Close
CK-12
HomeScienceLife ScienceFlexBooksCK-12 Life Science For Middle SchoolCh43. Cellular Respiration
4.3 Cellular Respiration
Difficulty Level: At Grade | Created by: CK-12
Last Modified: Aug 12, 2020
Add to Library
Lesson Objectives
Summarize what happens during cellular respiration and where it takes place.
Outline the three stages of cellular respiration and how much ATP is made in each stage.
Explain how cellular respiration and photosynthesis are related.
Describe two types of fermentation.
Identify advantages of aerobic and anaerobic respiration.
Lesson Vocabulary
aerobic
anaerobic
cellular respiration
electron transport
fermentation
glycolysis
Krebs cycle
Introduction
If you're like astronaut Chris Hadfield in Figure below, you grab a piece of fruit when you need a boost of energy. Most fruits are good sources of glucose. Glucose is the simple sugar that living things use to store and transport energy. Glucose is taken up by all of your cells. However, cells don't use the energy in glucose directly. They first need to release the energy and store it in ATP, or adenosine triphosphate. The much smaller amount of energy stored in ATP is just right for fueling cell processes. How do your cells change glucose to ATP? It happens during cellular respiration.
Fruit is a good source of glulcose
Astronaut Chris Hadfield eats a banana aboard the International Space Station.
Using Glucose to Make ATP
Cellular respiration is the process in which cells break down glucose, release the stored energy, and use the energy to make ATP. For each glucose molecule that undergoes this process, up to 38 molecules of ATP are produced. Each ATP molecules forms when a phosphate is added to ADP, or adenosine diphosphate. This requires energy, which is stored in the ATP molecule. When cells need energy, a phosphate can be removed from ATP. This releases the energy and forms ADP again.
What Happens During Cellular Respiration?
Cellular respiration involves many biochemical reactions. However, the overall process can be summed up in a single chemical equation:
C6H12O6 + 6O2 → 6CO2 + 6H2O + energy (stored in ATP)
Cellular respiration uses oxygen in addition to glucose. It releases carbon dioxide and water as waste products. Cellular respiration actually "burns" glucose for energy. However, it doesn't produce light or intense heat like burning a candle or log. Instead, it releases the energy slowly, in many small steps. The energy is used to form dozens of molecules of ATP.
Answer:
Sample Response: The first stage of cellular respiration occurs in the cytoplasm. This is where glucose is broken down into smaller molecules. A small amount of energy is also released. The second stage occurs in the mitochondrion. This is where the small molecules combine with oxygen to produce water, carbon dioxide, and a large amount of energy.
Explanation: