PHOTOSYNTHESIS

1
PHOTOSYNTHESIS

• Unit Target Use a model to illustrate how
  photosynthesis transforms light energy into
  stored chemical energy.

2
Learning Target Model ATP production and use.
(skill)

• Energy
• a. Comes from the sun
• b. Is used by plants to grow
• c. Is used by animals for daily activities
• d. Is the ability to do work
• e. All of the above
• Answer e

3
Truth and Baloney
The original source of energy for most living
things is water. Baloney Sun Organisms that
can make their own food from the suns energy are
called heterotrophs. Baloney Autotrophs
4
ATP

• Which is not a component of ATP?
• Adenine
• Glucose
• Ribose
• Phosphates
• b. Glucose

5

• Which component of ATP is missing from ADP?
• A- Adenine
• B- Ribose
• C- 2 phosphates
• D- 1 phosphate
• D- 1 phosphate

6

• Energy is released from ATP when bonds break
  between
• adenine
• ribose
• phosphate groups
• c

7

• ATP is
• Light energy
• Mechanical energy
• Chemical energy
• Heat energy
• c.

8

• Which is not true about ATP
• It stores energy
• It releases energy
• It is used for active transport of substances
  into and out of the cell
• It is used for diffusion and osmosis
• d. Diffusion and osmosis do not require energy.

9
Learning Target Interpret a diagram of what
occurs in a leaf during photosynthesis. (skill)
10
2
4
1
5
3
11

• Where do the light dependant reactions take
  place?
• The thylakoid
• Where do the light independent reactions take
  place?
• The stroma

12
Photosynthesis takes places in a plant cells
mitochondria. Baloney chloroplast A plant
needs carbon dioxide, water and sunlight to carry
out photosynthesis. Truth
13

• Autotrophs can convert the sunlight into
  mechanical energy.
• Baloney chemical
• The chemical energy made by autotrophs are
  carbohydrates such as sugar and starch.
• True

14
Learning Target Write the chemical formula for
photosynthesis. (knowledge)

• Name the missing parts of the formula from left
  to right.
• light
• 6CO2 6H2O --------? 6O2 C6H12O6

15

• Heterotrophs rely on photosynthesis for the food
  and oxygen produced.
• True

16
Learning Target Observe changes in a system
during photosynthesis. (R)

• How will photosynthesis be affected if you do not
  give a plant light?
• Photosynthesis cannot take place without light.
• What will happen to the rate of photosynthesis if
  you increase the amount of carbon dioxide
  available?
• It will increase.

17
Learning Target Determine the structures of a
plant that helps it obtain energy. (knowledge)

• Which part of the plant is absorbing water?
• A- roots
• What plant part is absorbing sunlight?
• E- leaf
• What plant part of the plant takes in carbon
  dioxide?
• Leaf

18

• What type of cell is show in the picture?
• Guard cell
• On a hot day, guard cells (open / close ) the
  stoma to keep too much water from leaving the
  plant.
• What gases important to photosynthesis pass
  through the stoma?
• Carbon dioxide and oxygen

19

• The organelle of the leaf that is the site of
  photosynthesis is the nucleus.
• False chloroplast
• The pigment in the chloroplast that absorbs
  sunlight is called xanthophyll.
• False chlorophyll
• During the winter, chlorophyll begins to
  disappear from the leaf as photosynthesis
  production shuts down.
• True