• Bell-Ringer: Open Logbook to Food for Animals• AGENDA: NO HW• Quiz Corrections by Friday (tutorial)

Which of these things adds mass to the growing child? Which of these things do not add mass?

Adds Mass Does Not Add Mass

When children grow into adults, they gain a lot of mass. What things does a child need to grow?

• What is the Function of Food for Animals?• Put an X next to the things you think animals use

as food. • _____proteins _______carbohydrates

________carbon dioxide ______fats ______water _____oxygen _______minerals _______vitamins

• Explain your thinking

Group Name

Molecules by number

What are the characteristics that the molecules in the group have in common with each other?

A    

B    

C    

D    

• Make a Logbook entry- Food Molecules- 10/11• Read the information about the

molecules in figure 2.1 (taped in your logbook) and answer the questions

• Make a new entry- Food Molecule Questions- 10/11• Glue into your Logbook and then

answer the questions.

• Food Molecule Questions1.What are the 3 major groups of food molecules

recognized by scientists?2. How do these molecules differ from each other?3. What are the two major subdivisions of

carbohydrates?– What is the distinction between the two major

subdivisions?4. How are cellulose and starch similar?5. How do cellulose and starch differ?6. How are starch and glycogen different?

LE 5-5

Glucose Fructose Sucrose

LE 5-6aChloroplast Starch

1 µm

Starch: a plant carbohydrate

LE 5-6bMitochondria Glycogen granules

0.5 µm

Glycogen

Glycogen: an animal carbohydrate

LE 5-8

Cellulosemolecules

Cellulose microfibrilsin a plant cell wall

Cell walls Microfibril

Plant cells

0.5 µm

b Glucosemonomer

LE 5-20a

A chain of amino acids =

a protein

LE 5-20e

IronHeme

CollagenPolypeptide chain Hemoglobin

LE 5-11b

Fat molecule

LE 5-12a

Saturated fat and fatty acid.

LE 5-12b

Unsaturated fat and fatty acid.

LE 5-13

Structural formula Space-filling model Phospholipid symbol

Hydrophilichead

Hydrophobictails

Fatty acids

Choline

Phosphate

Glycerol

Hyd

rop h

obic

tails

Hy d

r op h

ilic

h ea d

Phospholipid: builds cell membranes