Download Organization of Living Things and Cellular Respiration

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Transcript


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Larger size means there are fewer predators
and have a wide variety of prey.
Longer life.
Specialization of each cell makes multicellular organisms more efficient.

Tissue: a group of similar cells that perform a
common function.
Cells
Cells work
together to create
tissues
Tissues

Organ: a collection of tissues that carry out a
specialized function in the body.
Tissues
Tissues work
together to create
organs.
Organs

Organ System: a group of organs that work
together to perform body functions.
Organs
Organs work
together to create
Organ Systems.
Organ
Systems
The Organization of Living Things
Cell
Tissue
Organ
Organ System

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Plants get food from photosynthesis.
Photosynthesis: the process by which plants,
algae, and some bacteria use sunlight, carbon
dioxide, and water to make food.

There are two ways animal cells get food.
Animal Cells get food by…
Cellular
Respiration
Fermentation
Cellular Respiration: the process by which cells
use oxygen to produce energy from food.
 Food is broken into carbon dioxide and water
and energy is released.
 Some of the energy is used to form adenosine
triphosphate (ATP-remember it was in the
organelle powerpoint).
 ATP supplies energy that fuels cell activities.

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C₂H₁₂O₆ + 6O₂
6CO₂ + H₂O + energy (ATP)

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Cellular Respiration releases carbon dioxide
and water which is used by plant cells to
make glucose. During photosynthesis,
oxygen is released.
Photosynthesis makes glucose and oxygen
which is used by animal cells to make ATP.
Cellular respiration releases carbon dioxide
and water.
Cellular Respiration
Cellular respiration releases
carbon dioxide and water which
is used by plant cells to make
glucose. During photosynthesis,
oxygen is released.
Light Energy
Chloroplast
from Plant
Cell
ATP
CO₂ + H₂O
Mitochondria
from Animal
Cell
Photosynthesis
Photosynthesis makes
glucose and oxygen which is
C₂H₁₂O₆ + O₂
used in animal cells to make
ATP. Cellular respiration
releases carbon dioxide and
water.
Better view of this on page 388
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Fermentation: the breakdown of food
without the use of oxygen.
Example: your muscles burning when you are
running. Your muscles can’t get enough
oxygen so fermentation produces lactic acid
which makes your muscles burn.
Example: Yeast in bread. Yeast forms carbon
dioxide during fermentation. The bubbles of
CO₂ cause the dough to rise and leave small
holes in the bread after it is baked.