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The second law of thermodynamics states that orderliness proceedsspontaneously to disorderliness. The growth and development of cells (and organisms) seems to defy this law because growth and development are in fact increases of orderliness.
A. Does growth and development of an organism violate the second law of thermodynamics? Explain.
B. How could you prove experimentally that life does not defythe second law? What result would show that growth and development does defy the second law of thermodynamics?
C. In thermodynamic and biochemical terms, describe the resultsof your experiment on cells of the organism.
D. Describe the structural and functional effects of your experiment on cellular structures such lysosomes. Why are these effects predicted by the second law of thermodynamics?
Under anaerobic conditions (a lack of oxygen), the conversion of pyruvate to acetyl CoA stops. Which of these statements is the correct explanation for this observation?
How many triplet code changes did you find that could occur WITHOUT resulting in an amino acid change in the enzyme and which position (first, second, or third) did the changes occur within the DNA triplet codes you listed above?
Whether it was volcanic activity that spewed sulfur dioxide and ash into the atmosphere, or a giant meteor that crashed into the Earth blasting dust and debris into the sky.
If a couple is planning on having two children, what is the probability that both will be male? a)0 b)1/4 c)1/2 d)3/4 e)1
There is much genetic evidence that humans arose evolutionarily from primates. Based on this fact, could this have happened if the primates reproduced asexually? Why or why not?
How do 2 tryptophans interact with each other? What other amino acids exhibit similar behavior?
The endosymbiont theory suggests that mitochondria and chloroplasts evolved from ancient bacteria that were ingested by primitive nucleated cells.
Consider a cold winter day with air temperature of 5C and relative humidity of about 20% (moisture content 0.001g H2O/g dry air). A person waiting at a bus stop inhales at an average rate of 7g dry air/min and exhales air .
Explain how the scientists tested their hypothesis that females only produce glandular secretions when ridden by a male. What was their sample size for this experiment?
What accounts for the difference in how the leading and lagging strands of DNA are synthesized? a. DNA polymerase can work on only one strand at a time. b. The origins of replication occur only at the 5' end. c. DNA polymerase can join new nucleot..
Suppose that you conducted a tissue fractionation and that you collected aliquots at each step. Suppose that in step one you suspended tissue in 100 ml buffer then homogenized the tissue.
In cats, hair length is a trait that is controlled by a gene with 2 alleles. The dominant allele codes for a protein that produces short hair, and the recessive allele codes for a protein that produces long hair.
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