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1. How do the terms organic and inorganic relate to the biotic and abiotic components of an ecosystem?
2. What are the six key elements (macronutrients) in all living organisms?
3. What features distinguish between organic and inorganic molecules?
4. Define the term "matter". Define the term "energy". Explain how they are related.
5. State the Law of Conversation of Matter.
A virus stock was diluted to 10^-8 and 0.1 ml assayed in triplicate. The plaque counts were 22, 18, and 20. Calculate the titer of the virus stock.
Draw a phylogenetic tree of photosynthetic organisms. Include the following in your tree: angiosperms, photosynthetic bacteria, non-photosynthetic bacteria, animals, photosynthetic protists, non-photosynthetic protists, gymnosperms, monocots, bryo..
A cricket has a diploid genome of 1.2 billion base pairs. Assume that there are about 200,000 individuals in the population and that the mutation rate is one per 100 million base pairs. About how many new mutations will occur in each generation of..
Describe how one media can identify both the selective and differential nature of the organism. What components of PCRs require to be changed in order to identify genetically modified meats or milk? Generally give details why those changes need to be..
Also, how could the P53 protection mechanism negatively influence longevity?
In cases of severe iron deficiency, cellular respiration can not proceed normally. Disregarding problems related to hemoglobin or red blood cells, at what stage of cellular respiration would lack of iron cause the greatest problems?
Consider the structure and function of each of these four biological macromolecules. How does the structure of each molecule affect its function?
An analyzer has two true breeding lines of rabbits, both of which are albino. Albinism is recessive in both lines. When the researcher crosses the rabbits,
Niremberg used the enzyme polynuclotide phosphorylase to assemble RNA with random sequences in the absence of a template. Suppose they added the enzyme to a solution of 90% GTP and 10% UTP, and then used the cell-free system of protein synthesis t..
When cloning a gene into an expression vector, people frequently use two different restriction enzymes so that passenger DNA can be inserted in the correct orientation with respect to promoter sequence present in the plasmid. But orientation is almos..
There are a many respiratory diseases that can affect a person's ability to maintain a healthy respiratory system.
Explain how a mutation could inhibit the binding of sigma factor to DNA. Describe two specific base substitutions you think would inhibit the binding of sigma factor.
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