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Video: Differences Between Chemosynthesis & Photosynthesis

Photosynthesis is the process by which organisms use light to make energy-rich compounds.
Bacteria that convert chemicals (such as sulfur) into a form that can be used for energy
What do organisms in hydrothermal vents depend upon for energy?
There is no light deep in the ocean, so plants cannot photosynthesize
Why are plants unable to survive in hydrothermal vents?
What type of organisms usually forms the basis of all food chains?
Chemosynthetic bacteria
What type of organisms live in hydrothermal vents?
Deep in the ocean
No light
High temperature fluids
Chemicals (ex: sulfur)
What are the characteristics of a hydrothermal vent environment?
Read and answer the questions
By the end of today we are going to add a third cycle to our Venn Diagram

What do you think the ‘chemo’ and ‘synthesis’ mean
Objective: Students will examine chemosynthesis and its chemical equation in order to compare and contrast chemosynthesis, photosynthesis and cell respiration.
Immediately: Make sure you have TURNED IN your Formal Lab Report Electronically

Start your drill on your handout you have 3 minutes!
Fill in the Venn Diagram with the list along the side of the Exit ticket slip.
Comparing photosynthesis, Cell Respiration, and chemosynthesis


Venn diagram to compare and contrast photosynthesis and chemosynthesis.

In living systems, energy generally flows from the sun and used by every organism
ENERGY = the ability to do work or cause change
What is energy?
Energy Pathways
We don’t just eat glucose!

How do we break down the carbs that we eat into glucose to be used for cellular respiration?
Releases energy from the glucose (monosaccharide) that can be used in the cell.
Released energy is in the form of ATP
Occurs in the mitochondria of ALL cells
Cell Respiration
Brainstorm with your partner about the process of Cellular Respiration.

Included you will get the fillable venn diagram, ..

Chemosynthesis is the process by which organisms use inorganic chemicals to make energy-rich compounds.1.

Ecosystems depend upon the ability of some organisms to convert inorganic compounds into food that other organisms can then exploit. In most cases, primary food production occurs in a process called photosynthesis, which is powered by sunlight. In a few environments, primary production happens though a process called chemosynthesis, which runs on chemical energy. Together, photosynthesis and chemosynthesis fuel all life on Earth.

The diagram below compares examples of these two processes - chemosynthesis in a seafloor hydrothermal vent bacterium, and photosynthesis in a terrestrial plant.

incapable of photosynthesis or chemosynthesis, ..

Great comparison of photosynthesis to chemosynthesis Photosynthesis vs

The vents are chimneys of extremely hot water and poisonous sulfur, yet they are able to support life.
Chemical Equation:
CO + H O + H S C H O + H SO
Write this note in your note packet!
the production of carbohydrates through the use of energy from inorganic molecules (chemicals) instead of light
Shortcycle Quiz!

(10/23 or 24)

Biochem Benchmark exam (10/27 or 28)
Water, macromolecules, enzymes, photosynthesis, cellular respiration
Homework: Biochem Unit Review
Objective: Students will examine chemosynthesis and its chemical equation in order to compare and contrast chemosynthesis, photosynthesis and cell respiration.
Did we meet our objectives?
Day 16: Chemosynthesis
6 12 6 2 2 2
ATP (Energy)
Photosynthesis Chemical Reaction
2 2 6 12 6 2
Photosynthesis takes place in plant cells.

What is the process of photosynthesis
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Make a Venn diagram to compare photosynthesis and aerobic cellular ..

What do you know about Yeast?
What is the function of yeast in bread?

What kind of organism is yeast?

What process gives yeast its energy?

How do you know that yeast did this process?

to make bread rise by releasing CO2 bubbles
Unicellular Fungi
Anaerobic Cell Respiration
makes energy by
partially digesting sugar without oxygen
CO2 is released!
Objective: Students will design and conduct an experiment on cell respiration in order to analyze cell respiration and to demonstrate proficiency with the scientific method.

a third cycle to our Venn Diagram ..

It would increase.
If the temperature in this experiment were reduced by ten degrees, what would most likely happen to the rate of reaction?
What molecule has energy ready to release when we need it?
What macromolecule gives us energy?
This conversion occurs in the cells of your body.
Adenosine Tri-Phosphate (ATP)
Energy from food is converted into a compound called ATP.
How Do We Make Energy?
Draw a diagram of the cycle of ATP being converted to ADP and back to ATP again.

Label the reaction that stores energy to be used later
Label the reaction that releases energy to be used now
On the Bottom of the front sheet
ATP: Batteries In Your Body

Quora Photosynthesis and chemosynthesis are both processes by ..

Monitoring water quality helps communities make decisions about the Bay.

Measuring oxygen levels of the Bay provides scientists with information about which process?
A mitosis
B meiosis
C chemosynthesis
D photosynthesis

4 pairs can share a large Venn diagram …

The Mid-Ocean Ridge and rift valleys, such as the one that runs through eastern Africa, occur along boundaries where plates are spreading apart. New oceanic crust is created as the plates separate and molten rock rises up from the mantle and fills the space. The earthquakes and the volcanic eruptions along the Mid-Ocean Ridges are a direct result of this process.

Leaf Photosynthesis Diagram Worksheet

The data the students collected are
summarized in the graph below.

Which of these processes produces
carbon dioxide?
A mitosis
B diffusion
C respiration
D photosynthesis
Follow all instructions
Ask if you are confused
Inappropriate behavior will result in redirection or removal from lab
Wear your goggles!
Leave your Formal Lab Report on your desk.

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