M8 L1 How Organsims
Obtain Energy
HS-LS2-3
HS-LS1-5
Objectives
Key Words
Explore how
different organisms
obtain and store the
energy they need to
survive
Energy
Thermodynamics
Autotroph
Heterotroph
Metabolism
Photosynthesis
Cellular Respiration
Adenosine Triphosphate (ATP)
Why do farmers grow lettuce in a
greenhouse?
1.
Watch the video.
Module Opener:
Encounter the
Phenomenon –
Cellular Energy
2.
3.
Come up with a claim
Write down your
to answer the question
preliminary
above.
evidence.
Where do you think the following things
obtain their energy from?
Plants are eaten by other
living things so they can
obtain energy.
We know that plants get their
01.
energy from the sun.
How is sunlight turned into
useable energy by plants?
What form does energy take
inside living things?
Law of conservation of energy
01.
02.
03.
Where does energy
Where does energy go?
Can energy be lost
come from?
forever?
Law of conservation of energy
Energy can neither be created nor destroyed. It can only be transferred or
transformed.
Sunlight changes to?
What energy transfer and transformation is happening when you heat
food in a microwave?
If you microwaved your hand it would explode, but you can touch
microwaved food without your hand exploding. Why?
Laws of Thermodynamics:
First law: same as law of conservation of energy.
Energy from the sun is converted into chemical energy. That chemical
energy can be converted to mechanical energy when moving
Secind law: every transfer and tranformation results in some loss of
energy, usually in the form of thermal energy (heat).
Clap your hands 10 times fast. What energy transformation occurred?
Why are your hands warm?
Watch the following video to learn about autotrophs and
heterotrophs. Then answer the questions.
Autotroph vs Heterotroph Producer vs Consumer (Moomoo Math and
Science)
https://www.youtube.com/watch?v=h3ychzika4U
Where do autotrophs get energy from?
By what chemical process do they convert this energy to a useable form?
Where do heterotrophs get their energy from?
What is the difference between a carnivore and an omnivore?
Research
What is the difference
between a chemoautotroph
and a photoautotroph?
Cell Metabolism
— The series of chemical reactions which occur inside a cell.
— When the product of one reaction is the subtrate (reactant)
of the next, it is called a metabolic pathway
— The pathways can be CATABOLIC or ANABOLIC
OBSERVE THE FIGURE ON THE NEXT SLIDE AND FIND 2
DIFFERENCES BETWEEN ANABOLIC AND CATABOLIC
REACTIONS
ANABOLIC: use energy, create larger molecules
CATABOLIC: release energy, break down larger molecules
Observe the relationship
between cellular respiration and
photosynthesis. Which is
anabolic and which is catabolic?
What does energy look like inside the body? Is
it an electric current? Tiny fires lit all over?
02.
Energy is carried, stored and released in the form
of a molecule called ATP.
https://www.youtube.com/watch?v=NN5Y57NbnrU
What does ATP stand for?
How many phosphate groups does it
have?
Where does it store energy?
How does it release energy?
What is it called after energy has been
released?
What happens to it after it releases
energy?
Sometimes ADP can be further broken
down into adenosine monophosphate.
This releases less energy than losing the
first phosphate group, so it happens
rarely.
03.
HW
Page 201, questions 1 to 4