Photosynthesis and Cellular Respiration

Photosynthesis and Cellular Respiration
Lesson 6 Pgs

RED SLIDE: These are notes that are very important and should be recorded or highlighted in your science book. You will see an image of a page in your book when it is necessary to highlight! Copyright © 2010 Ryan P. Murphy

-Nice neat notes that are legible and use indentations when appropriate Example of indent Skip a line between topics Don’t skip pages Make visuals clear and well drawn. Please label. Nucleus DNA / Nucleoid Prokaryotic Pili Eukaryotic Flagella

RED SLIDE: These are notes that are very important and should be recorded in your science journal.
BLACK SLIDE: Pay attention, follow directions, complete projects as described and answer required questions neatly. Copyright © 2010 Ryan P. Murphy

Keep an eye out for “The-Owl” and raise your hand as soon as you see him.
He will be hiding somewhere in the slideshow Copyright © 2010 Ryan P. Murphy

Cells need energy!!!! Growing, moving, and functions that happen in the cell use energy A cell could NOT survive for long if it did not have the energy for all of the functions it does Pg. 68

Cells Get Energy from Food!
The cells of all living things need chemical energy. Food contains chemical energy When cells break down food, the energy of the chemical bonds in food is released This energy can either be used or stored by the cell Pg. 69

Cells Get Energy from Food!
Pg. 69 Living things get food in different ways and can be grouped based on how they get food Producer Consumer Make their own food Most use energy from the sun They use most of the food they produce for energy and store the rest in their bodies (fruits, roots, etc.) Eat other organisms May eat producers OR other consumers Decomposers are also consumers: they break down dead organisms or wastes Fungi and many bacteria are decomposers

HOMEWORK!! Complete the Venn Diagram on page 69 for homework!
100 if you do it! 50 if you don’t!

Cooking with Chloroplasts!

How do plant cells make food?
Pg. 70 Nearly ALL life on Earth gets energy from the sun Plants get it directly Animals get it indirectly by eating plants In a process called photosynthesis plants use energy from sunlight, carbon dioxide, and water to make sugars and oxygen

How do plant cells make food?
Pg. 71 Photosynthesis occurs in chloroplasts Not found in animal or fungi cells Contain a green pigment called chlorophyll, which captures energy from sunlight This energy (sunlight) is used to combine carbon dioxide and water, which forms sugar glucose and oxygen gas Glucose-sugar that stores chemical energy Stored as starch in roots and stems

The energy flow of life occurs because of plants
The energy flow of life occurs because of plants. Plants harness the energy from the sun, and pass it on to all other life forms. Copyright © 2010 Ryan P. Murphy

Equation for Photosynthesis 6CO2 + 6H2O + Energy  C6H12O6 + 6O2
Carbon Dioxide Water

Carbon Dioxide Water Sunlight

Carbon Dioxide Water Sunlight Sugar

Carbon Dioxide Water Sunlight Sugar Oxygen

Video Photosynthesis Song.

Occurs only in cells with chloroplasts.
Copyright © 2010 Ryan P. Murphy

Produces sugar from light.

and water Trees grow from gas and water and gas (CO2)
Produces sugar from light. Trees grow from gas and water and gas (CO2) and water Copyright © 2010 Ryan P. Murphy

Oxygen is waste product
Oxygen is released. Oxygen is waste product Copyright © 2010 Ryan P. Murphy

“What do you get when you combine a Hobbit from the Shire and a chemical process that converts carbon dioxide and water into sugar…”

“What do you get when you combine a Hobbit from the Shire and a chemical process that converts carbon dioxide and water into sugar…” Frodo-synthesis

Plants can get their energy from the sun by just sitting there, we have to go search for it, hunt, etc. We didn’t we evolve to be green and get our energy from the sun. Why aren’t we green? Copyright © 2010 Ryan P. Murphy

Answer! Because photosynthesis only produces a small amount of energy.

Did we learn something?

Mighty Mitochondria!! Pg The process of breading down food is called cellular respiration Takes place in MITOCHONDRIA of eukaryotic cells Takes place in CYTOPLASM of prokaryotic cells Starting materials are glucose and oxygen Products of cellular respiration are chemical energy, carbon dioxide and water

Respiration – The plant burns the sugar to make energy.
Mitochondria Chloroplasts

Mitochondria Chloroplasts Inside the leaf

Cellular Respiration: Processes whereby certain organisms obtain energy from organic molecules.

When you breath out, you are releasing water, carbon dioxide, and some heat.
These are the by products of cellular respiration in the millions of cells in your body. Copyright © 2010 Ryan P. Murphy

Cellular Respiration C6H12O6 + 6O2 = Released energy + 6CO2 + 6H2O.

Burns sugars for energy.

Answer. Muscle cells in the heart must always beat to keep you alive
Answer! Muscle cells in the heart must always beat to keep you alive. It has a lot of mitochondria in its cells to burn sugar for energy. Copyright © 2010 Ryan P. Murphy

What’s the term? Transpiration Water is produced.

Occurs in dark and light.

Merry-Go-Round! Photosynthesis and Cellular Respiration are connected!
Most of the oxygen in the atmosphere was made during photosynthesis Nearly all organisms use that oxygen during cellular respiration They produce carbon dioxide and release it into the environment so plants can use it to make sugars

The plant uses carbon dioxide and produces oxygen during photosynthesis. Animals use oxygen and produce carbon dioxide during cellular respiration. Photosynthesis Respiration Copyright © 2010 Ryan P. Murphy

Note: Plants also have mitochondria. But fewer.
The carbon dioxide oxygen balance. The plant uses carbon dioxide and produces oxygen during photosynthesis. Animals use oxygen and produce carbon dioxide during cellular respiration. Photosynthesis Respiration Note: Plants also have mitochondria. But fewer. Copyright © 2010 Ryan P. Murphy

(Different Organelle)
Respiration – The plant burns the sugar to make energy. Mitochondria Chloroplasts Mitochondria (Different Organelle)

(Different Organelle)
Respiration – The plant burns the sugar to make energy. Chloroplast Mitochondria Chloroplasts over there Mitochondria (Different Organelle)

Mitochondria Chloroplasts Burns the sugars using oxygen and releases CO2 and water

Remember: Producers create the sugars, then consumers use these sugars.

“Thank you tree.” “Thank you for doing photosynthesis.”
Remember: Producers create the sugars, then consumers use these sugars. Plants harness the energy from the sun so we can live. “Thank you tree.” “Thank you for doing photosynthesis.” Copyright © 2010 Ryan P. Murphy

“I love your sugars that you produce from photosynthesis.”
Remember: Producers create the sugars, then consumers use these sugars. Plants harness the energy from the sun so we can live. “I love your sugars that you produce from photosynthesis.” Copyright © 2010 Ryan P. Murphy

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