Cellular Respiration - Mr. Trepanowski's CPA Biology
Cellular Respiration
Objectives:
- B2.1A - Explain how cells transform energy (ultimately obtained from the sun) from one form to another through the processes of photosynthesis and respiration. Identify the reactants and products in the general reaction of photosynthesis.
- B2.1B Compare and contrast the transformations of matter and energy during photosynthesis and respiration.
- B2.4e Explain how cellular respiration is important for the production of ATP (build on aerobic vs. anaerobic).
- B2.5D Describe how individual cells break down energy-rich molecules to provide energy for cell functions.
- B2.5e Explain the interrelated nature of photosynthesis and cellular respiration in terms of ATP synthesis and degradation.
- B2.5f Relate plant structures and functions to the process of photosynthesis and respiration.
- B3.1B Illustrate and describe the energy conversions that occur during photosynthesis and respiration.
-B3.1C Recognize the equations for photosynthesis and respiration and identify the reactants and products for both.
Let’s Review…
- What are the reactants in photosynthesis? ____________________
- The end result of photosynthesis is…________________________
- In which organelles does photosynthesis occur? _______________
I. Cellular Respiration (Section 4.3)
A. The life processes of all organisms require _____________.
B. The potential energy held in the bonds of food molecules ____________ be used directly by the cell.
C. Energy from _______ must be converted to the ONLY __________ source that cells can use- ________!
D. Cellular Respiration ________________________________
__________________________________________________
__________________________________________________
E. Respiration occurs _______________ in _____ cells of _____ organisms.
II. Anaerobic Respiration
A. Also called ___________________
B. ______ oxygen is present
C. 1 Glucose only partially broken down to form waste products and _________
D. Anaerobic Pathways
1. Glucose ( 2 lactic acid + 2 ATP
i. Happens in __________ cells when they run out of ____________ (Feel the BURN!)
ii. Happens in _____________ that make yogurt, cheese (mmm cheese), dill pickles
2. Glucose ( 2 ethanol + 2 CO2 + 2 ATP
i. Happens in some __________
ii. Happens in _____________ (bread, beer, wine)
III. Aerobic Respiration
A. Has to have ______________
B. VERY _______________
C. Most _______________ on earth are ________________
D. 1 glucose completely broken down to _________________, _____________ and _______ ATP.
E. The equation for Cellular Respiration:
_____________________________________________
E = energy (usable ATP)
F. What do you notice about this equation?
______________________________________________
G. Takes place mostly in ________________.
IV. Comparing Aerobic & Anaerobic Cellular Respiration Pathways
| |Aerobic |Anaerobic |
| |(__________________) |(___________________) |
|Occurs in: | | |
|1 glucose makes: | | |
|Net ATP production: | | |
V. Adaptations for Respiration
In other words, how do different organisms bring O2 in and remove CO2?
A. Bacteria, protists & fungi
1. Respiratory gases are exchanged by ______________
B. Plants
1. Respiratory gases are exchanged through _________, _________, and __________
2. Moves in and out of cells by diffusion but leaves and stems also have _____________ to the environment (stomata and lenticels)
C. Adaptations for Respiration in Animals
1. Techniques vary:
i. Simple diffusion across ______________________
ii. Diffusion across moist ______ into a circulatory system
iii. Openings to the environment that can be flapped open and closed with a circulatory system to transport gases
iv. Specialized respiratory structures (e.g. _________) to speed exchange of respiratory ________
In the space provided below:
1. Compare and Contrast anaerobic and aerobic respiration (be sure to use the words oxygen and energy.)
____________________________________________________________________________________________________________________________________________________________________________________________________________________
2. Rewrite the equation for cellular respiration in words.
__________________________________________________________________________________________________________
3. What kind of respiration do we use? How do you know?
____________________________________________________________________________________________________________________________________________________________________________________________________________________
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