cellular respiration
DESCRIPTION
Cellular Respiration. Michael Slemp. BELL WORK. Compare and contrast the similarities and differences of light dependent reactions to that of light independent reactions. USE COMPLETE SENTENCES AND BE DETAILED!!!!!. Review of photosynthesis. What is the definition of photosynthesis? - PowerPoint PPT PresentationTRANSCRIPT
Cellular RespirationCellular Respiration
Michael SlempMichael Slemp
BELL WORKBELL WORK
Compare and contrast the similarities and Compare and contrast the similarities and differences of light dependent reactions to differences of light dependent reactions to that of light independent reactions.that of light independent reactions.
USE COMPLETE SENTENCES AND BE USE COMPLETE SENTENCES AND BE DETAILED!!!!!DETAILED!!!!!
Review of photosynthesisReview of photosynthesis
1.1. What is the definition of photosynthesis?What is the definition of photosynthesis?
2.2. What ingredients do you need for photosynthesis?What ingredients do you need for photosynthesis?
3.3. Name the organelle where photosynthesis occurs?Name the organelle where photosynthesis occurs?
4.4. What is the function of chlorophyll and where is it What is the function of chlorophyll and where is it found?found?
5.5. Name the 2 stages of photosynthesis. Where do they Name the 2 stages of photosynthesis. Where do they take place? (be specific) take place? (be specific)
6.6. Briefly describe stage 1Briefly describe stage 1
7.7. Briefly describe stage 2Briefly describe stage 2
8.8. What is the final product?What is the final product?
You can work with your partner to come up with the answers.
Review of photosynthesisReview of photosynthesis
1.1. What is the definition of photosynthesis?What is the definition of photosynthesis?
2.2. What ingredients do you need for photosynthesis?What ingredients do you need for photosynthesis?
3.3. Name the organelle where photosynthesis occurs?Name the organelle where photosynthesis occurs?
4.4. What is the function of chlorophyll and where is it What is the function of chlorophyll and where is it found?found?
It’s a process in which plants capture energy from sunlight and converts it into chemical energy of sugars (glucose)
Sunlight energy, carbon dioxide and water
Chloroplast
To absorb sunlight (red and blue wavelengths), found on the thylakoids
Important information! Make sure you know it!
5.5. Name the 2 stages of photosynthesis. Where do they Name the 2 stages of photosynthesis. Where do they take place? (be specific) take place? (be specific)
6.6. Briefly describe stage 1Briefly describe stage 1
7.7. Briefly describe stage 2Briefly describe stage 2
8.8. What is the final product?What is the final product?
Stage 1 = light-dependent happens on thylakoinds Stage 2 = light-independent happens in stroma
Light-dependent: chlorophyll captures sunlight energy, water
molecule is broken down, oxygen is released and energy is transferred to molecules that carry energy (like ATP)
Light-independent: uses energy from light-dependent reaction, carbon dioxide is added to a cycle of reactions to form larger molecules, molecule of simple sugar (glucose) is formed
Glucose and oxygen
Sunlight energy
Photosynthesis Energy rich molecule (glucose)
Plants, animals and humans use glucose as source of energyRemember this slide from last class?
We have just reviewed
Will be talking about today
What happens when we eat?What happens when we eat?
Complex molecules
Digestion
Simple molecules (like glucose)
Glucose is transported
into cells
Remember ? Glucose is too large to be used by cells (it’s the $100 bill). All cells need energy in smaller units called ATP
(this is your $1 bill)
How cell makes ATP from glucose?How cell makes ATP from glucose?Making ATP is complex process involving multiple steps and enzymes.
We will learn the simplified version today.
Use blank sheet in your notebook
(landscape) Draw animal cell
in the middle, include all major
parts (do not forget
mitochondria).
Make sure you have enough
space on both sides of the picture for
adding notes.
How cell makes ATP from glucose?How cell makes ATP from glucose?
When glucose enters cell it
undergoes in cytoplasm a
process called GLYCOLYSIS(glyco = sugar,
lysis = break down)
Products of glycolysis enters mitochondria and
undergoes 2-stage process called CELLULAR
RESPIRATION
Add notes to your picture as you see on this slide. Make sure you have room for more notes!!!
How cell makes ATP from glucose?How cell makes ATP from glucose?
GLYCOLYSIS Splits glucose molecule into two
three-carbon molecules and makes 2 ATP molecules
Add notes on the left side of your cell drawing
Remember formula for glucose? C6H12O6 = 6 carbons
1 32 5654 1 32 4 6+ + 2 ATP
glucose Two 3-carbon molecules
How cell makes ATP from glucose?How cell makes ATP from glucose?
GLYCOLYSIS
Add notes on the left side of your cell drawing
Happens in cytoplasm
Process that does not require oxygen =
anaerobic process
Final product:
Two 3-carbon molecules (enters into mitochondria)
2 ATP molecules (energy usable by cell)
Pair SharePair Share1. Definition of glycolysis
Discuss with your partner.
2. Where in cell does glycolysis happen?
3. What does anaerobic process means?
4. What are the final products of glycolysis?
Pair SharePair ShareGLYCOLYSIS
Splits glucose molecule into two three-carbon molecules and makes
2 ATP molecules
Happens in cytoplasm
Process that does not require oxygen = anaerobic process
Final product:
Two 3-carbon molecules (enters into mitochondria
2 ATP molecules (energy usable by cell)
How cell makes ATP from glucose?How cell makes ATP from glucose?
CELLULAR RESPIRATION Releases chemical energy from sugars (and other carbon-based molecules) to make ATP when
oxygen is present (aerobic process)
Add notes on the right side of your cell drawing
You can think of it as opposite of photosynthesis glucose + oxygen = carbon dioxide + water + ATP
Cellular respiration happens in 2 steps inside of mitochondria
How cell makes ATP from glucose?How cell makes ATP from glucose?Add notes on the right
side of your cell drawing Lets draw a mitochindria
Outer membrane
Inner membrane (stage 2 of
cellular respiration)
Matrix = fluid inside
mitochindria (stage 1 of
cellular respiration)
How cell makes ATP from glucose?How cell makes ATP from glucose?Add notes on the right
side of your cell drawing
Happens in the matrix of mitochondria
CELLULAR RESPIRATION
Remember the final product of glycolysis?
Two 3-carbon molecules
3-carbon molecules are broken down in cycle of
chemical reactions
Stage 1 = Krebs cycle Produces molecules that carry
energy into the 2nd stage
How cell makes ATP from glucose?How cell makes ATP from glucose?Add notes on the right
side of your cell drawing CELLULAR RESPIRATION
Stage 1 = Krebs cycle
Final products: small number of ATP (ready to be used by cell) carbon dioxide is released energy-carrying molecules (other than ATP)
Remember, we said ATP is like $1.00 bill? Well, other energy-carrying molecules produced in this stage are like $20 bills which cells cannot
use. That is why these other energy-carrying molecules enter 2nd stage of cellular
respiration.
How cell makes ATP from glucose?How cell makes ATP from glucose?Add notes on the right
side of your cell drawing CELLULAR RESPIRATION
Stage 2 = Electron transport Uses energy-carrying molecules from
stage 1 and oxygen to produce more ATP
Happens on the inner membrane
Energy from energy-carrying
molecules is transferred to
chains of proteins in the
inner membrane
Final products: 34-36 ATP water heat (escapes)
Pair-sharePair-share1. Definition of cellular respiration
Discuss with your partner
2. What is aerobic process?
3. What is the name of stage 1 of cellular respiration? Where does it happen and what
are the final products?
4. What is the name of stage 2 of cellular respiration? Where does it happen and what
are the final products?
Pair-sharePair-share
2. AEROBIC process needs the presence of oxygen
3. STAGE 1 = Krebs cycle, happens in matrix of the mitochondria. Final products are: small number of
ATP, carbon dioxide and energy-carrying molecules (other than ATP)
4. STAGE 2 = Electron transport, happens on the inner membrane in mitochondria. Final products: 34-36 ATP, water and heat
1. CELLULAR RESPIRATION Releases chemical energy from sugars (and other carbon-based
molecules) to make ATP when oxygen is present
Final OverviewFinal Overview
GLYCOLYSISCELLULAR
RESPIRATION
Do not write, just pay attention
In cytoplasm Inside of mitochondria
Anaerobic – no O2Aerobic – needs O2
Starts: Glucose molecule
Ends: two 3-carbon molecules and 2 ATP
Stage 1 = Krebs cycle (matrix) Starts: 3-carbon molecule Ends: some ATP, CO2 and energy-carrying molecules
Stage 2 = electron transport (inner membrane) Starts: energy-carrying molecules and oxygen Ends: 34-36 ATP, water and heatTOTAL 36-38 ATP