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Take a look at the site birds.cornell.edu/AllAboutBirds/studying/feathers/feathers, Then find 3 feathers to compare structures. Take a photo of the feathers, or draw a sketch, then write a 3-4 paragraph essay on why you think the feathers look the way they do.
You should choose feathers that come from either three different birds (from different habitats, or use habitats in different ways), or from three different places on the bird.
Remove feathers from any living specimens.
What is the name of the epithelial cells that make up the epidermis? -What is the cytoplasmic intermediate filament found in these epithelial cell junctions ? -What is the name of the junctions that links the intermediate filaments of the epitheli..
Microfilaments and microtubules have similarities and differences in their structures and mechanisms of polymerization. Please list 3 similarities and 3 differences between these polymers. (One is composed of actin and the the other of tubulin sho..
Explain what riobzymes and proteins have in common in terms of acid-base catalysis. What are the differences?
The Neurospora cross was made between a strain that carried mating type A and the mutant allele arg-1(arg) and another strain the carried mating-type a and the wild type arg-1 (+)gene
Two normal parents produce a child with PKU, a recessive genetic disease? Determine the probability that a sperm from the father will contain the PKU allele?
Describe differences between stem structure in monocots vs. eudicots. Cover both primary growth and secondary growth.
Of what value are the septae (sheets of tissue) between segments of the earthworm?
What is the role of telomerase in the cell? How would deletion of the telomerase gene affect rapidly dividing cells?
Write an essay describing how pancreatic hormones influence blood glucose concentrations over the short term (following a meal and fasted). Include a description with a diagram to demonstrate the role of negative feedback in the regulation of bloo..
Which transport mechanism can be visualized as a relay race? What is being transported like a baton in a relay race? What is being transported into cell by this process? Explain the steps of this transport process from start to finish nothing what..
Explain how to lift the leg. Begin with the pre-central gyrus and end with the leg lifting away from my death grasp. The message from the brain is sent by neurons. How does a neuron send a message from axon hillock to axon terminal?
The nutritional data on a cereal box shows that one serving of a dry cereal has 200 kilocalories. If one were to burn one serving of the cereal,
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