File - DeLuca Biology

PHOTOSYNTHESIS
Ahhhhhhh that’s the stuff
ENERGY!!!!
What is energy????
Everything!! (That isn’t matter)
(But matter possesses energy!)
We all need it
• Most living things get their energy from the sun, either directly or
indirectly.
• Energy from the sun is captured by plants during PHOTOSYNTHESIS
Created with Light
PHOTO = LIGHT SYNTHESIS=CREATING
Photosynthesis: process
by which a cell captures
sunlight energy and uses
it to make food.
Plants, like corn or grass,
use the sun to make their
own food. These are
called autotrophs. Aka
Producers
Just eat it
But what about the rest of us?
• When a caterpillar eats grass,
the energy stored in the grass
is transferred to the
caterpillar.
• When a bird eats that
caterpillar, the energy stored
in the caterpillar is transferred
to the bird.
The Bird and the Worm
• Organisms that cannot make their own food are called
heterotrophs. AKA Consumers
Using photosynthesis, autotrophs use the sun’s energy
to convert CO2 and H2O into O2 and C6H12O6
6 CO2 + 6 H2O
C6H12O6 + 6 O2
2 Stages of Photosynthesis
STAGE 1:
Capturing the Sun’s ENERGY!!!
• Process occurs mostly in
leaves
• Chloroplasts capture
energy using pigment
called chlorophyll
• That energy powers stage 2
STAGE 2:
Making the food!!!
• Ingredients: CO2 & H2O
• CO2 enters through
stomata, H2O through roots
• Da, da ,da ,da ,da ,da
DING!
• C6H12O6 and O2!
• O2 released back through
stomata
A cell membrane is composed of a double layer of lipids in which many kinds
of proteins are embedded. Many of these proteins act like gates, allowing only
certain particles to enter or leave the cell.
When a particle has to go against its concentration
gradient through one of these gates, energy is
supplied by the cell to the correct protein to move
the particle through the membrane. A
sodium‐potassium ion pump is an example of a
type of carrier protein that uses a large portion of
the cell’s energy to move sodium ions through the
cell membrane.
Question: The sodium‐potassium ion pump found in some cell
membranes is made of which of the following basic structural
components?
• Read the question
• Highlight the only relevant words in the question.
(HINT: it is NOT the entire question)
BELLRINGER
ACTIVITY
• Underline specifically what you need to know to
answer this question.
EOC Practice
Question
Analysis
• Read the paragraph
Or
• Underline the relevant sentence to answer this
question. (Yes, It is only one sentence.)
HOW TO
ANSWER A TEST
QUESTION
• Circle the MOST IMPORTANT words in that sentence.
• Rewrite the question using the information you have
circled.
• Answer the question.