Bell Work: 1/8/13

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Bell Work 1/8/13
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Review

• Directions Write the answer true or false for
  each statement below.
• Particles move into and out of cells by passing
  through the nucleus.
• Particles can move through the membrane in two
  ways by active transport and passive transport.
• Passive transport needs energy from food to move
  the particles.
• A semi-permeable membrane allows only some
  particles to pass.
• Directions Choose a word from the word bank
  below that describes each statement.
• The movement of particles from an area of high
  concentration (crowded) to an area of low
  concentration (less crowded) until both sides are
  equal.
• The movement of water through a semi-permeable
  membrane.

Osmosis diffusion
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Important Review
Diffusion Particles move from a high
concentration to a low concentration Water, food,
and oxygen are examples of things that MUST move
in out the cell so that it survives. Wastes MUST
move out of the cell so that it survives.
Molecules will move in and out of the cell so
that an equilibrium is reached. There must always
be an equal balance on both sides of the cell
membrane. The cell membrane is semi-permeable-
some things are allowed to go through it and
others are not. Osmosis is a type of Diffusion.
Water molecules are diffused in and out of a
cell. It DOES occur in plant and animal cells.
Osmosis and Diffusion require passive transport
of materials. Energy is NOT needed- just
happens! Active transport is when ENERGY is
needed!
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Objectives

• Explain how materials move through simple
  diffusion. (SPI 0707.1.5)
• Diffusion/Osmosis Lab
• Compare the chemical compounds that make up the
  reactants and products of photosynthesis and
  cellular respiration. (SPI 0707.3.1)
• Interpret a diagram to explain how oxygen and
  carbon dioxide are exchanged between living
  things and the environment. (SPI 0707.3.2)

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6 ounces garlic-flavored croutons 1/2 teaspoon
ground black pepper 1/2 teaspoon cayenne pepper
1 teaspoon chili powder 1 teaspoon dried thyme
1/2 onion, roughly chopped 1 carrot, peeled and
broken 3 whole cloves garlic 1/2 red bell
pepper 18 ounces ground chuck 18 ounces ground
sirloin 1 1/2 teaspoon kosher salt 1 egg
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Photosynthesis!!!
49. Photosynthesis and Cellular Respiration Notes
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What is photosynthesis?

• ____________ is the process by which plants make
  their own food.
• The word photosynthesis means combine with
  _______ or _______ by light.

Photosynthesis
made
light
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Where does photosynthesis occur?

• Photosynthesis occurs in the ________ of a plant.
  More specifically- in the ___________.

leaves
chloroplasts
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Plant Cell

Chloroplast are organelles in a plant cell.
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Inside of the chloroplast

• _____________ is found in the chloroplasts.
• Chlorophyll is the ___________ that makes the
  plant _________.
• Chlorophyll __________ light energy.

Chlorophyll
pigment
green
absorbs
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Photosynthesis needs and products

• Plants use the ______ energy captured by
  chlorophyll to change ______ ______ and _______
  to food.
• The food is in the form of a sugar called
  __________ (C6H12O6).
• Photosynthesis also produces ________.

light
carbon
dioxide
water
glucose
oxygen
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Elbow Partner How does photosynthesis help us?

• During the process of photosynthesis, oxygen is
  produced. We use this oxygen to breathe. We
  also receive energy from the plant when we eat
  plants.

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Reactants vs. Products

• Reactants are what you need to make something-
  The reactants for photosynthesis are Sunlight,
  Carbon Dioxide and Water.
• Products are what you make- The products for
  photosynthesis are Glucose (sugar) and Oxygen.

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EQUATION FOR PHOTOSYNTHESIS
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Where does the food (glucose) go next?Discuss
with an elbow partner.

• The glucose is transported from the chloroplast
  to the Power House, or mitochondria.
• The Mitochondrion are where cellular respiration
  take place.

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Photosynthesis and Cellular Respiration

• Cellular respiration is a chemical reaction that
  occurs in cells.
• During cellular respiration, cells use oxygen to
  produce energy from food.
• Food (glucose) is broken down into CO and H O,
  and energy is released.
• The released energy is used to maintain body
  temperature in animals. It is also used to form
  ATP, which supplies energy that fuels cell
  activities.

²
²
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The Connection Between Photosynthesis and
Respiration
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Reactants vs. Products

• Reactants are what you need to make something-
  The reactants for cellular respiration are
  Glucose (sugar) and Oxygen.
• Products are what you make- The products for
  cellular respiration are Carbon Dioxide, Water
  and ATP.

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EQUATION FOR RESPIRATION
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Alternative to Cellular Respiration

• Fermentation produces ATP without using oxygen.
  It can occur in muscles when they are unable to
  get oxygen for respiration.
• Fermentation also produces lactic acid. This
  acid can cause muscle fatigue.

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Brain Pop
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Scientist Notebook Drawing

• Draw, color, and label a diagram to explain how
  oxygen and carbon dioxide are exchanged between
  living things and the environment.

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Oxygen
Carbon Dioxide