Bioenergetics
Bioenergetics
Bioenergetics
VALIANT GROUP
OBJECTIVES
FOR YOU TO LEARN WHAT IS:
BIOENERGETICS
Bioenergetics
CHARACTERISTICS
OF LIFE
What do you think makes
something alive?
Cell Reproduction
7
What living things are Procreation of living
made of. things.
of Life environment.
Adaptation
Taken as a Group, Living
things change over time.
Cell
Living things are made up of tiny building
blocks.
ENERGY FLOW IN
THE ECOSYSTEM
The ecosystem is where organisms are found, where each living
thing has its role to play. But with all these living things present in
an ecosystem, you might ask, what is the primary requirement
for an ecosystem to be sustained and not collapse? For all living
things present to survive? This all leads to one answer,
ENERGY
All living organism require a source of energy to live, the
chemical energy which is found in foods is the main source of
energy in the ecosystem, this source is found in the different
trophic levels of the food chain where organisms eat others and
vice versa.
What is the food chain and food web?
The food chain is essentially The food web is a collection of
the order or sequence of what several food chains therefore it is
each animal and organism on a larger scale than a simple
eat, from single-celled food chain. While in the food chain,
organism to those as big as a single organism is consumed by a
predator or it consumes an
the blue whale that needs
organism, in the food web, a single
food to survive. The food
organism is consumed by many
chain explains which
predators or it consumes several
organism eats another
other organisms. Food webs are
organism and the energy more complex and lead to a more
transferred by doing so. sustainable ecosystem.
Energy Flow in the Ecosystem
The energy flow in an ecosystem is one of the greatest factors that
supports the survival of a great number of organisms. Almost all
organisms on Earth use the sun as their primary source of energy,
they absorb sunlight to get the energy from it and use it in different
ways, plants absorb a specific type of solar radiation known as
Photosynthetically active radiation for Photosynthesis.
Energy Flow in the Ecosystem
1st Layer: Consists of Autotrophs, these are the green algae and
plants, primarily utilizing solar energy using
Primary Producers photosynthesis other than relying on other animals.
In nearly all layers of the trophic levels, 10% of the energy is lost. In an
ecosystem, energy flows in a unidirectional pattern, this is due to the fact
that the energy that is lost during energy flow cannot be reused in later
stages of the energy flow.
Direction of Energy Flow
1st Production of Primary producers utilize solar energy to
produce organic material through
Step Energy photosynthesis at the first trophic level.
2nd Consumption of
Plants are used as food by herbivores at the second trophic
level of energy flow in the ecosystem, which provides them
Step Primary Producers with energy. Metabolic operations have considerable effect on
the energy transfer as it consumes a large portion of energy.
Step Herbivores represent a higher trophic level, and they get energy by feeding
on carnivores
- The first law states that energy cannot be created nor destroyed,
energy can only be transferred from one state to another.
CELLULAR
RESPIRATION
What is Cellular
Respiration?
Cellular Respiration is a
metabolic pathway that
uses glucose to produce
adenosine triphosphate
(ATP), an organic
compound the body can use
for energy. One molecule of
glucose can produce a net of
30-32 ATP.
What is the purpose of
Cellular Respiration?
Stage 1 Glycolysis
Stage 1 Glycolysis
SOURCES
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