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A student places beetroot cubes in sugar solutions 0M, 2M, 4M, 6M and 8M for 30mins. When the data was graphed, it appeared that there was no percent gain or loss in mass for the beetroot cube put in the 6M sugar solution.
a) Draw a graph showing the kind of curves the student must have obtained for each solution, to come to this conclusion.
b) Explain what is going on at the cellular level? Use appropriate terms (water potential and tonicity) in your explanation.
When you look around at the world, you can see various examples that show how an object's or a system's structure relates to its function.
Describe the activity of the bacterial lac operon when glucose it present and when it is not present (include whether or not lac operon genes are expressed and why) also include points a, b, and c below;(a) Why does lactose act as an inducer?
how would you produce single stranded cloned dna using pGL3 plasmid vector? and How would you mutate a single nucleotide in the dna that has been cloned into the pGL3 plasmid vector.
One strain of tree bears 20 pound kumquats. Another strain bears 4 pound fruit. Assume that this trait is controlled by 4 gene loci.
In aquatic gas exchange across gills, how does countercurrent exchange improve the uptake of O2 that otherwise would be lost with concurrent exchange?
Discuss the process of animal viral replication in the host cell with emphasis on the attachment, penetration, biosynthesis, assembly, and release phases of the cycle.
Assume that you have two lines of plants: one is A/A; B/B, the other is a/a; b/b. You cross the two and then self the F1 plants. With respect to these 2-genes:
Describe the expression of a gene as it occurs in a eukaryotic cell, starting with the gene and ending in a vesicle. What takes place in each subcellular organelle? Briefly discuss how this differs from a prokaryotic cell.
Explain especially what happens to DCPIP and why and how. Explain results and purposes of each of the four tubes of solutions where the photosynthetic output of the Hill reaction was measured.
How denaturing a protein alters the functions of that protein. If we are bleeding by the accident, why the injury has to be deeper than epidermis.
Make the statement that there is an equal number of all four bases (A, T, C, G) and that the sequence of bases is random, how often will a single operator be expected to appear by chance. What factors or clues lead you to this diagnosis.
Discuss the process of natural selection as defined by Darwin. How did Darwin's theories differ from his predecessors?
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