Aim: To explore the structures and functions of different macromolecules
Objectives by the end of this lesson SSBAT:
List the properties of water that make it essential to life.
Explain how the atomic structure of water affects its biological interactions.
Describe the properties of proteins and its structures
5. Transpiration pull (negative
pressure)
Root pressure (positive
pressure)
Capillarity (small plants)
2 important factors of the water:
Cohesion: H2O molecules tend
to stick together
Adhesion: H2O molecules tend
to stick to the inside of the
xylem
6. Leaves
Small to reduce the surface area
Thick to reduce surface area
8. Thick waxy
cuticles
reduce water
loss through
the epidermis
9.
10. My relative molecular mass is 18g/mol.
There is 1.26 million trillion tons of me on
earth.
I can be found as a solid, liquid, or gas.
I make up 70% of human body.
Two hydrogen and one oxygen.
11. Aim: To explore the structures and functions of
different macromolecules
Objectives by the end of this lesson SSBAT:
List the properties of water that make it
essential to life.
Explain how the atomic structure of water
affects its biological interactions.
Describe the properties of proteins and its
structures
39. Fibrous proteins Globular proteins
Stable structure Relative unstable structure
Insoluble in water Soluble in water
Strength gives structural structures Metabolic functions
Polypeptide chains from long strands Polypeptide chains “roll up” into
spherical shape
E.g. Collagen in bone and keratin in E.g. all enzymes , antibodies, some
hair hormones (e.g. insulin), heamoglobin
40.
41. Review
1. Which of the following suspects is a
protein component?
2. List some foods that provide proteins?
3. How does my body use proteins?
42.
43. Aim: To explore the structures and functions of
different macromolecules
Objectives by the end of this lesson SSBAT:
List the properties of water that make it
essential to life.
Explain how the atomic structure of water
affects its biological interactions.
Describe the properties of proteins and its
structures