This document provides an overview of bioenergetics and the flow of energy through living systems. It defines key terms like bioenergetics, energy, producers, consumers, and energy-giving molecules. Producers, or autotrophs, are able to produce their own food through photosynthesis and provide energy for other organisms. Consumers, or heterotrophs, consume producers or other consumers. Glucose and ATP are important energy-giving molecules, with ATP storing and transferring energy within cells. The document also briefly discusses the early history of experiments conducted to understand photosynthesis.

1. BIOENERGETICSEnergy for Life

2. If it goes down to
one thing, what
do living things
need the most?

3. BIOENERGETICS
The study of energy in
living systems
(environments) and the
organisms (plants and
animals) that utilize them.

4. ENERGY
• ability to do work
• all living things
require energy
• transformed
• cannot be recycled

5. How do
organisms
get
energy?

6. 1. FOOD
Organic molecules
that store chemical
energy.

7. PRODUCERS
(AUTOTROPHS)
organisms that can
make their own food

9. PRODUCERS
(AUTOTROPHS)
are not selfish for
they produce for
other organisms too.

10. PRODUCERS
(AUTOTROPHS)
are starters of food
chain.

12. CONSUMERS
(HETEROTROPHS)
consumes autotrophs,
other heterotrophs,
or BOTH.

15. ENERGY-GIVING
MOLECULES
a. Glucose
b. ATP

18. ATP (Adenosine triphosphate)
store smaller amounts of energy, but
each molecule releases enough energy
to do the work within the cell.

22. A GLIMPSE OF HISTORY
Photosynthesis is a very important process in nature that it
is quiet difficult to understand. Scientists in early times conducted
many experiments to prove and fully understand how it works.
In the 1600s, scientist Jan Baptiste de Helmont carried out
an experiment on a willow tree. He believed that water was the
main source of life of plants. John Woodward rejected Helmont’s
conclusion by conducting his own experiment in plants in the
1600s. Woodward correctly concluded that most water absorbed
by plants is released into the atmosphere.
This led to further experiments about photosynthesis.

23. HOMEWORK
Choose one of the following question and answer it through
an artwork (1/2 short BP)
1. If humans were producers, who/what would consume us?
2. If photosynthesis does not happen…..
3. I eat because….