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1. Vegetarians sometimes claim more people can be supported when they eat plants than when they eat animals. Use your knowledge of energy flow in ecosystems to explain why the production of 500 calories of hamburger requires more solar energy than production of 500 calories of corn. Think about the food chain that ends in you eating a hamburger vs. the food chain that ends in you eating corn.
2. It might also be more efficient to feed people herbivorous fish than beef. The fish eat algae, which is 70% digestible, while cows eat grass, which is 30% digestible. The fish are cold-blooded while the cows are warm-blooded. Explain, in terms of assimilation efficiency and production efficiency, why more people can be fed from the fish than the cows (assuming similar amounts of algae/grass).
Why do you think the haploid part of the plant cycle has evolved to be short and microscopic in seed?plants in comparison to the conspicuous gametophytes common in liverworts or mosses? Why do angiosperms have evolved colorful flowers.
bioinformatic You have been given a gene sequence, which is in RAW file format. Perform the following tasks by visually inspecting the sequence using information you were provided during lectures for Module 1, Topics 2 and 3.
Identify a mutant whose chromosomes shorten after each round of replication. A mutation in which gene would explain this observation?
What are the four most important elements necessary for life on this planet? Name the four most important groups of organic molecules for life? Give an example of each.
How is the DNA of prokaryotes organized? In chromosomes? If so, how many, what shape? what are the characteristic shapes of individual bacteria cells? Give Latin and English terms.
Fructose is a ketohexose monosaccharide discovered in honey, fruits, and other sources. It is also added to some foods and drinks as a sweetener.
Which compartments of a cell is associated with each of the following: clathrin, calcium ions in a skeletal muscle cell, dolichol phosphate, ribonuclease and lipase, digitalis, LDL receptors, COPI proteins, COPII proteins, unbound SRPs.
In what brain structure would you expect cocaine to have the largest effect on dopamine transmission and why.
What is the major morphological difference between mammalian red blood cells and avian red blood cells? Describe what is happening in plasmolysis when onion cells are placed in a hypertonic solution. Sketch a plasmolysed cell.
Describe the contributions of the following eukaryotic microbes to the biofuels industry.
2-cells vary in the amount of energy they need. One cell, a muscle cell, must generate large supplies of ATP. The other cell, a skin cell, requires very little ATP.
Which of the following statements about DNA replication is true? Okazaki fragments are DNA fragments synthesized on the leading strand. Single?strand binding proteins stabilize the open conformation of the unwound DNA.
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