Transcript Cellular Respiration

1. How do the functions of the nucleus differ from
those of the cell membrane?
A. The nucleus converts food energy while the cell
membrane stores minerals and wastes.
B. The nucleus controls the activities of the cell, while the
cell membrane controls what enters and exits the cell.
C.The nucleus provides support, while the cell membrane
converts carbon dioxide and water into food.
D.The nucleus stores food and water, while the cell
membrane stores chemicals used by the cell for
photosynthesis.
Science Starter
2.13&17.15
2. Chloroplasts are organelles that are found in
plant cells. Some plant tissue contain cell with
large numbers of chloroplasts, while other tissue
contains few chloroplasts.
Which type of plant tissue contains cells with
many chloroplasts and why?
A. Stem
B. Root
C. Leaf
D. Flower
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*Plants are autotrophs - they
make their own food.
*They use a process of
photosynthesis to convert
energy from the sun in the
form of EMR into glucose.
*Glucose stores the
chemical energy until
needed by the plant.
*Photosynthesis takes place
in the chloroplasts found in
plant cells.
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*2 main parts surrounded by
membranes
*Grana - stacks of Thylakoids “coins”
*Stroma - aqueous space between the grana
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*Converts sunlight
for
energy into food
the plant.
*Takes place in the
chloroplasts
*Has a light (grana)
and dark (stroma)
*Formula for photosynthesis
6H2O -> C6H12O6 + 6O2
reaction
6CO2 +
Now what uses the glucose made during
photosynthesis?
*the process that
releases energy by
breaking down
glucose and other
food molecules in
the presence of
oxygen to make
ATP
*Cellular respiration
happens in the
mitochondria.
*
*Because cellular respiration occurs when
oxygen is present, we call this aerobic
respiration.
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*All living organisms
need energy to grow,
move, and
reproduce.
*We get that energy
from sugars like
glucose.
*We change energy
stored in food to
make ATP (a
different form of
energy) our bodies
can use
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How does this relate to ATP?
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*
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*Some cells, like
muscles, are
more active &
have more
mitochondria
because they
need to make
more energy
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*C6H12O6 + 6O2  6CO2 + 6H2O + energy
*Glucose + oxygen  carbon dioxide + water and energy
(ATP)
*Hey Look! It’s the opposite of photosynthesis!
*Both animals
(heterotrophs)
and plants
(autotrophs) do
cellular
respiration.
*If oxygen is not
present then a
process called
fermentation
occurs.
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When you exercise hard,
and have trouble breathing
you aren’t getting enough
oxygen. When there’s no oxygen, lactic acid
is formed. Lactic acid is what causes your
muscles to hurt or cramp after exercise.
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