Today

1
Todays Agenda

• Bellringer Compare mixtures and compounds.
• Review Reading Guide from Yesterday
• Organic Compounds

2
Organic Compounds

• Science 7
• Study Pack 2

3
Todays target

• I can explain the role of organic compounds in
  the human body.

4
Questions to ponder

• Why do we need food?
• Why do we need different kinds of food?
• What happens to foods once we eat them?
• How does eating help us grow?

5
Yesterday

• Section reviewpage 253 1-4

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A Growing Body

• Our body needs these organic compounds to grow
  and develop
• Where do we get the additional compounds in order
  to grow larger and become more complex?
• Food and nutrients taken in and broken down by
  the body become the building blocks needed to
  help us grow

7
Getting Additional Building Blocks

• Where do we get carbohydrates?
• Sugars and starches found in foods like potatoes,
  noodles, rice, and bread.
• What does the body use them for?
• Your body breaks them down to produce energy for
  your cells
• They also make up some cell parts, like the cell
  walls in plants and cell membranes

8
Getting Additional Building Blocks

• Where do we get proteins?
• Foods like meat, eggs, fish, nuts, and beans
• What does the body use them for?
• Proteins form parts of the cell membrane
• They also make up many organelles
• Certain cells use proteins to make body parts
  such as hair

9
Getting Additional Building Blocks

• Where do we get lipids?
• Lipids are found in foods that come from animals
  like meat, cheese, and eggs
• What does your body use them for?
• Cells store energy in lipids for later use
• Why might you gain weight if you eat to large
  amounts of foods containing lipids?

10
Getting Additional Building Blocks

• Where do we get nucleic acids?
• Passed from parent to child
• What does your body use them for?
• DNA directs all the cells functions
• RNA plays an important role in making proteins
  for the body

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Assignment

• Section Review 1-4