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1.) Discuss why is the ovulate cone of a pine designed to be so much more durable than the staminate cone? (think about where fertilization and seed development occur, and how long it takes.)
2.) In pine, both the staminate and ovulate cones occur on the same tree, but not on the same branch. The ovulate cones are usually at the top of the trees, so that pollen from their own tree will NOT fall onto and fertilize the eggs. Why would this be an andvantage?
3.) What is the advantage of having seeds rather than spores?
Explain a single procedure that could be used to isolate the Con A Receptor from this preparation. Propose two ways the photosynthesis process could be improved to fix more CO2 than normal and the plant productivity can be increased. Be specific abou..
A group of Ethiopians were assayed for CCR5-del32 deletion polymorphism. 223 were +/+, 64 were +/del32, and 6 were del32/del32.
When did dinosaurs and pterosaurs become extinct? Which are the only extant animals that descended directly from dinosaurs.
In enzyme lab. Manganese Dioxide does not come from a living thing. Is it a catalyst (define catalyst)? Is it an enzyme? Describe. Why did we test the hydrogen peroxide with manganese dioxide.
Suppose that a light-sensitive cell in the eye of a particular invertebrate. The cell membrane contains cGMP-gated K+ channels.
He says that the mere presence of DNA is not sufficient to prove the point: his cells may have adopted DNA as a useful molecule quite independently of all other known life forms. What would you do to convince him that he was wrong.
Huntington disease is a rare dominant train auses neurodegeneration later in life. A man in his 30, who already has 3 children discoers his mother has huntingtons disease.
A scientist has discovered a new cell. illustrate, in detail, ALL the ways the scientist could decide if the cell comes from a plant or an animal. How several of these result in the release of oxygen into the atmosphere?
How would you answer to a person who argued that there is nothing to worry about because natural systems, through natural succession, will heal the wounds of human activities and restore the balance of nature.
What parts of the autonomic nervous system control heart rate and what effect does each have on it. What parts of the heart contract as the wave passes them and in what order.
Eukaryotic cells may divide through the process of mitosis or meiosis. In humans, mitosis generates new cells for growth and repair.
Which is likely explains the genetic uniqueness of this population. Following accident and reconstructive surgery, he noted that his left lower eyelid was still drooping and the corner of his mouth sagged. What nerve damage did he maintain.
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