Chapter 1 Test

1
Class Topics
Title Biology 9/7/06
Objectives

• To assess learning about living things.

• Chapter 1 Test
• All chapter 1 corrections are due before the bell
  rings, next class period.
• Begin Chapter 2
• Polar/nonpolar molecules
• Organic Compounds
• Macromolecules
• I cannot teach anybody anything, I can only make
  them think.
• Socrates

Sunday, November 13, 2016 1110 AM
2
Class Assignments
By When
What

• Chapter 1 Test 9/7/06
• All chapter 1 corrections 9/11/06
• Read 32-37 9/11/06
• Due this class period
• Due next class period
• Due in the future

3
Grade Sheet
4
2A Grade Sheet
5
Move desks
6
Posttest Activities

• Hand in test
• Correct chapter 1 homework/labs
• Read 32-37
• Read 32-37
• Read 32-37
• Read 32-37
• Read 32-37

7
Polar Molecules

• Have a slight electrical charge on either side of
  the molecule 105O
• H2O
• Unequal sharing of electrons
• Surface tension
• Polar molecules dissolve in water
• Nonpolar molecules do not dissolve in water
• Video Clip The Shape of Water

From http//ghs.gresham.k12.or.us/science /ps/sci
/ibbio/chem/notes/chpt2/water.htm
8
Nonpolar molecules

• No unequal sharing
• Do not dissolve in water
• Oils and fats

9
Organic Compounds

• Contain hydrogen and carbon
• Usually from or in living organisms
• all others are inorganic
• Do not have both carbon and hydrogen

10
Macromolecules

• Giant molecules
• Polymer - many units - large molecules put
  together from smaller units
• Monomer - one unit - the smaller parts of the
  larger polymer

11
Carbohydrates

• Sugars and starches
• Contain C, H, O
• H and O in 21
• Monosaccharides - monomer
• glucose - fuel for living cells
• fructose
• galactose
• isomers - same molecular formula, different
  structural formula (C6H1206)

12
Disaccharides

• 2 monosaccharides bonded together
• Condensation (dehydration) reaction
• sucrose
• lactose
• maltose

Image from http//staff.jccc.net/pdecell/biochemi
stry/carbohyd.html