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Bacterial cells have only one DNA molecule, which is double stranded and is replicated in essentially the same fashion as in eukaryotes. Imagine that, following the techniques of other scientists studying DNA, you created a bacterial cell that contains only radioactive nitrogen in its DNA. You then place the cell in a growth medium containing only "regular" (nonradioactive) nitrogen. Based on this scenario and your knowledge of DNA structure and replication, how many cells will contain some DNA with radioactive nitrogen after four rounds of cell replication?
Identify the components and functions of each primary organ or structure in the urinary system and explain the flow of urine from each of the primary organs and structures.
List the four "large molecules of life." Identify their composition and structure, and describe one function they perform in the cell. As well as their breakdown products.
Explain what causes gram-negative bacteria to stain pink. Explain what causes gram-positive bacteria to stain purple. Explain the purpose of iodine in the Gram stain procedure
Explain why codon might be of concern to a biotechnologist who wants to enhance the level of expression of a recombinant protein in E. coli
If a drug were found that blocked all calcium channels that are linked to G-protein coupled receptors, would it completely block the use of calcium as second messenger? Explain your answer.
What is the difference between geometric and exponential growth and what factors limit exponential growth (carrying capacity) resulting in logistic growth?
you now hyperventilate for 30 seconds into and out of a paper bag. are the posthyperventilation effects any different than in question 1 ? why or why not.
explain how hypothalamic regulatory hormones affect the secretion of anterior pituitary hormones. in your
how might you determine a hormone secreted by the hypothalamus from one secreted by the anterior pituitary by looking at the name.
Life cycle of the species- Describe the life cycle of the organism you have chosen. The life cycle of an organism refers to the series of changes in both development and growth from its beginnings as an independent life form up until maturity, whe..
Starting with four bacterial cells per cm3 in a rich nutrient medium, with a 20-minutes generation time, how many cells will there be in 1 dm3 of this culture after 1 hour?
Draw a meiotic II division phase where the haploid number is 3. There should be a telocentric, metacentric, and acrocentric chromosome. Include and label all structures both cellular and/chromosomal. Remember to name the meiotic phase you selected
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