Name:
Date:
Aim 17: How does the process of photosynthesis help living organisms maintain life?
DO NOW: You just found an unknown organism and discovered that it produces oxygen and glucose.
1. What type of organelle can you guarantee this organism has? ______________________________
2. Explain why:
A. PHOTOSYNTHESIS OVERVIEW
1. What is
photosynthesis?
2. What is the ultimate
energy source for
photosynthesis as well
as all living things?
3. Where does
photosynthesis
occur?
Conversion of ____________________________ (sunlight) into
_____________________________ (sugars).
__________________________

The ________________________ is trapped in the chemical bonds of
____________________
____________________ (organelle) which contains ___________________
which is a _____________________________ (colored substance) that
_______________________________ from the sun and converts it into
_____________________________ that can be used by living things
4. What are the benefits
of photosynthesis?

Provides __________________ for all plants and animals as a source of energy

Provides ___________________ for living things

Removes ____________________________ from the atmosphere
B. WHAT ORGANISMS PERFORM PHOTOSYNTHESIS?
1. Photosynthetic
Organisms
_______________, ________________ and some _____________________
1. Autotrophs (auto = _______________, troph = __________________):
2. What are photosynthetic
organisms also known
as?
___________________________________________________________
2. Producers: _________________________________________________
___________________________: Organisms that take
3. What type of nutrition is
photosynthesis?
________________________ materials ( _________ and _________ ) and convert
them into ______________________ nutrients ( ________________ )
C. CHEMICAL REACTION OF PHOTOSYNTHESIS
1. Chemical RAW MATERIALS (REACTANTS)
Formula
__________ + ___________
2. Word
Formula
PRODUCTS
___________________ + __________
RAW MATERIALS (REACTANTS)
PRODUCTS
________________ + _______________
3. What
aids this
process?
_______________ + _______________
___________________ and __________________ (in the chloroplast) break the bonds of the
materials to ________________________
RAW MATERIALS (REACTANTS)
1. _____________________
PRODUCTS
1. ___________________

______________
_________________


______________________
IF NEEDED IMMEDIATELY:


Comes from the
Used to make __________ (energy) during
______________________
____________________________to help maintain
_________________________ and carry out
2. __________________

______________________________
_______________

IF NOT NEEDED IMMEDIATELY:
Glucose can synthesize _____________ molecules
(complex carbohydrate) for _____________________. Before this
starch can be used in any other cellular process, it must be
____________________ into __________________ to make
___________ (energy)
2. ____________________

Inorganic _______________ product
3. _____________________

_________

__________________ waste product

Used by organisms to _____________ and for
_______________________________
PHOTOSYNTHESIS REVIEW
1. Explain some ways that a decrease in the rate of photosynthesis can have disastrous effects on living things
2. Why is the sun the ultimate energy source for all living things?
3. Why can’t animals perform photosynthesis?
4. Carbon dioxide is a greenhouse gas that contributes to increased rates of global warming. How does
photosynthesis help reduce the effects of global warming?
5. Why would plants in shorter growing seasons have more chloroplasts in their cells than plants in areas with
longer growing seasons?
PRACTICE QUESTIONS