How Organisms Obtain Energy. Mr. Wagner. Vocabulary:. Metabolism Photosynthesis Cellular Respiration Adenosine Triphosphate (ATP ) Anabolic Catabolic. All living organisms use energy to carry out all biological processes. Like the city that never sleeps, cells never sleep!.
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
Like the city that never sleeps, cells never sleep!
Your cells are constantly working, breaking down molecules, transporting substances across membranes, growing, & dying.
This all requires ENERGY the ability to do work
All organisms need energy.
Most energy comes from the Sun.
Autotrophs make their own food.
Heterotrophs need to eat food to obtain energy.
All of the chemical reactions that occur within a cell.
(a substrate binds to an enzyme to help speed up chemical reactions)
Catabolic release E by breaking down large molecules into smaller ones
The energy stored in the glucose can now be used by other organisms when they eat it as food.
Oxygen is used to break down organic molecules, resulting in the production of CO2 & H2O
Energy comes in diff. forms:
light E, mechanical E, thermal E, & chemical E.
In organisms, chemcial energy can be stored & then converted into another form of energy when needed.
Like when your muscles contract!
Most abundant energy-carrier molecule in cells.
ATP is made of an adenine base, a ribose sugar, & 3 phosphate groups.
It releases energy when the bond between the 2nd & 3rd phosphate group is broken forming a molecule called adenosine diphosphate (ADP) & a free phosphate group.