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The conclusion of the paper published by Watson and Crick includes the now rather famous statement: "It has not escaped our notice that the specific pairing we have postulated immediately suggests a possible copying mechanism for the genetic material." Describe what this statement means and why it is significant.
describe the pressure changes that occur within the ventricles ECG wave is produced, and explain how these pressure changes are related to ECG.
1. A 0.5 M solution of NaCl would have _____ osmolarity as compared to a 0.3 M solution of Al(NO3)3 2. Consider a solution made from a nonvolatile solute and a volatile solvent. Which statement is true?
Describe the multiple levels of cdk regulation and the significance of regulated cdks in the regulation of the cell cycle.
How does the RNA polymerase enzyme responsible for transcription know which of the two DNA strands to transcribe? does it start on the 3' or the 5' end?
The promoters for mRNA encoding early proteins in viruses like T4 have a different sequence than the promoters for mRNA encoding late proteins in the same virus. Explain the viral strategy behind this and how promoter modification occurs.
Why are mutation and recombination important in the process of natural selection and the evolution of organisms?
The gene for rough coat is dominant to the gene for a smooth and black is dominant to white. Cross-and animal homozygous for both rough and black with a smooth white one.
What is the name of the only class of mollusks that have a well-developed nervous system, complex eyes, and a closed circulatory system?
In the moss fertilization, when the egg(archegonia) and sperm(antheridia) unite, the result is a cell called the zygote. Where is the zygote formed?
Analyze the impact that the extinction of a species will have on an environment. Determine what you believe to be the most significant impact, and explain why.
The Km of an enzyme: Vmax:
Assume that you measure the OD of two E.coli cultures: culture A and culture B. The spectrophotometer gives you a reading of 3.2 for culture A and 0.01 for culture B. What would you do to determine the concentration of culture A and B and why? Giv..
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