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In this short essay (1-2 paragraphs) describe a scenario that might prompt modern day humans to evolve. This can be ANY scenario (even an imaginary one!). In your essay, describe the scenario in good detail and describe the adaptations that might arise in humans as the process of natural selection takes place

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Deanna HettingerLv2

26 Sep 2018

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Describe two consequences of being sessile that have made plants useful for the discovery of compounds that can enhance human health. Explain how natural selection has operated to produce plant chemical diversity and what functions these compounds serve in plants in relation to the two consequences you described. For one of these consequences, describe in detail one hypothesis for the evolutionary mechanisms causing chemical diversity to arise in plants, giving one example of a study supporting this hypothesis.

Name two forms of traditional medicine. Describe how traditional medicinal knowledge can be used to facilitate discovery of novel drugs plants. Describe the advantages and disadvantages of this approach as compared to one alternative approach (of your choosing) for drug discovery.

Draw a classification scheme organizing information about six plant-derived medicines . Include in your scheme: (a) class of the compound, (b) its molecular structure, (c) the scientific name and family of the plant from which it is derived, (d) its function in the plant, and (e) its medicinal properties for humans.

In a separate section, for each compound, write a short description of how the compoundâs function in plants causes it to function as a medicine the way it does in humans and of how it was discovered and developed into a drug or supplement.

Tropical rainforest

Grassland

Coral reef

Estuary

Desert

You will write an APA-style research paper about your choice of ecosystem, including the following elements:

Describe where this type of ecosystem might be located. Name 1 specific example.

Describe nutrient cycling of carbon (i.e., the steps of the carbon cycle) using examples of living things specific to the ecosystem you have chosen.

Describe 1 natural and 1 human-caused disturbance to the ecosystem that you have chosen, and explain the damage done to the ecosystem.

Provide a specific example of 1 natural resource provided by the ecosystem that you have selected. (Note that air, water, and soil are common to all ecosystems.)

How can the one resource you have described be sustained into the future?

How can humans act as good stewards to assist the recovery of the ecosystem you have chosen after a disturbance? Provide 1 example specific to the ecosystem that you have chosen.

You will create this assignment following the Assignment Detail instructions below. This assignment will be submitted in the Unit 5 - Submission Assignment lesson in intellipath.

Review the tutorial titled How to Submit the Intellipath Submission Assignment.

Please submit your work to this weekâs Intellipath Unit Submission lesson. Click the Upload button within the submission lesson to access the submission area. Click the Select File button to upload your document, and then click "OK" to finish.

Plant Chemical Adaptations

Physical adaptations are one way plants have become well-adapted to specific environmental conditions. For example, cacti have spines in place of leaves to prevent water loss in the arid conditions of the desert, and deciduous trees lose their leaves in the fall to survive cold weather conditions over the winter. Chemical adaptations are another means for plant protection. Many plants produce toxic or noxious compounds to protect themselves from insects or animals that would eat them, to reduce competition from other plants, or even to change the response of pollinators. Humans analyze and harvest these compounds for our own benefit.

Read this article on the search for useful plant compounds: Mother Natureâs Medicine Cabinet

Read this article on the less-than-beneficial uses of plant products: Addictive Drugs That Are Actually Pesticides

Choose ONE of the following compounds:

Caffeine

Cocaine

Nicotine

Artemisinin

Answer these four questions:

Describe the compound and in what plant(s) it is found.

Explain how this compound provides protection for the plant.

Does the compound provide any other benefits for the plant, such as enhanced pollination?

What effect does the compound have on humans?

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