CK12 Life Science

(Marvins-Underground-K-12) #1

chlorophyll Green pigment in leaves; helps to capture solar energy.


chloroplast The organelle in which photosynthesis takes place.


cyanobacteria Photosynthetic bacteria; also known as blue-green bacteria, or blue-green
algae.


electron transport chain A series of electron carrier molecules that transfers electrons.


light reactions The reactions of photosynthesis that only occur during daylight hours in
which the energy of sunlight is captured; also known as the light-dependent reactions.


NADPH A high energy electron carrier produced during the light reactions; carries the
energy in the electrons to the Calvin Cycle.


photosynthesis The process by which plants use the sun’s energy to make their own
“food” from carbon dioxide and water; process that converts the energy of the sun, or
solar energy, into carbohydrates, a type of chemical energy.


stomata Special pores in leaves; carbon dioxide enters the leaf and oxygen exits the leaf
through these pores.


stroma Fluid in the chloroplast interior space; surrounds the thylakoids.


thylakoid Flattened sacs within the chloroplast; formed by the inner membranes.


Points to Consider



  • How is glucose turned into an usable form of energy called ATP?

  • How do you gain energy from the food you eat?

  • What would provide more energy- a bowl of pasta or a small piece of candy?

  • What “waste” gas do you exhale?


4.3 Lesson 4.3: Cellular Respiration.


Lesson Objectives



  • Write and explain the chemical formula for cellular respiration.

  • Explain the two states of cellular respiration.

  • Compare photosynthesis with cellular respiration.

  • Describe the results of fermentation and understand when fermentation is needed.

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