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Q1. A scientist randomly separated a group of 100 lab rats into two groups of 50. One group was fed regular rat chow while the other was fed the same quantity of rat chow with added ddt. Both groups were housed in the same room with the same environmental conditions. At the end of the experiment, rats were weighed and the mean difference calculated. What variable(s) was/ were manipulated by the scientist?
a)DDT
b) Temperature
c) Weight difference
d) Both ddt and weight differences
e) both temperature and weight differences
Q2. •Complete descriptions of photosynthesis and aerobic respiration.
•explain how these two processes are linked between plants and animals based on reactants and products (water, carbon dioxide, glucose and oxygen) of both pathways.
•comprise the description of how energy is transferred from sunlight to ATP, from ATP to sugars, and from sugars to your cells.
Results of this analysis show that one of the most rapidly reassociating classes of DNA is substantially reduced in the older individual with respect to the 2 year-old. How can you describe this finding.
What are the underlying mechanisms that help assist a species to originate using sympatric speciation although they are not reproductively isolated like in allopatric speciation.Diversity within species that is using sympatric speciation.
Spatially explicit model shows no evidence of admixture between Eurasians and Neanderthals
Hermann Kolbe's synthesis of an organic compound, acetic acid, from inorganic substances that had been prepared straight from pure elements was an important milestone for what reason.What piece of evidence contradicts this claim.
Diplomonads, such as Giardia contain two haploid nuclei per trophozoite. Thus, During the G1 phase of the cell cycle, there should be a total of how several unreplicated chromosomes per trophozoite, and throughout the G2 phase, how many replicated ch..
What fraction of demes in each set is likely to become fixed for allele A1 versus A2. Explain the differences in head movement available to fish.
Write down 1X4 matrices, P, G, and M that represent the nutritional values of each food. Then find 3P+2G+2M and tell what the entries represent.
A fish on the outside of a school swims inward, leaving other fish on the edge. These new "edge" fish then move inward and the cycle repeats.
Complete the table by writing down the genotype of the parents or parents involved in each cross. Utilize the letter P for purple and p for white. What are the genotypes of the parent plants.
Give details how those mutations can potentially result in cancer. Make sure you list all references used for information and images.
What substance is known as the "spreading factor?" How does the "spreading factor" aid an organism in its quest to penetrate the host cell? What is the dissimilarity between net primary production and net primary productivity.
What is estimated density of firs in the forest. Why then is the gene called Dorsal, and not, for instance, Ventral.
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