Ojective 2:

Inorganic nutrients in plants

Objective 3:

Nitrogen fixation

Objective 4:

Root hairs (4a)
Mycorrhizae (4b)
Root structure and function

Objective 5:

Fungi body plan (5a)

Objective 6:

Kwashiorkor (6e)

Objective 8:

Gastrovascular cavities (8b)

Objective 9:

Scientific American: Ask the Experts - Why don't our digestive acids corrode our stomach linings? (9a)
Article: Ulcer causing bacteria win Nobel Prize^(optional)

Objective 10:

Rat Dissection Pictures (new!)

Objective 11:

Peptidases and Fat Absorption (11b, c, e)

Objective 13:

Filter feeding (13a): baleen
Dietary adaptations
Mechanical digestion
See the herbivore and carnivore skulls and teeth in the Study Center (13c)
See the goat's rumen in the Study Center (13e)

Objective 15:

The problems of gas exchange

Objective 16:

Gas exchange strategies

Objective 18:

Countercurrent exchange

Objective 19:

Insect gas exchange

Objective 20:

Rat Dissection Pictures (new!)

Objective 22:

Bird lungs (22a)
See the model of negative-pressure breathing in the Study Center

Objective 25:

Loading and unloading of respiratory gases

Objective 27:

CO₂ transport in the blood

Optional Supplementary Material:

Another use of salivary amylase
Spleen functions
Healthy eating pyramids
The effect of aspirin on your stomach!