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Viruses are the ultimate scavenger-a necessary consequence of their small genomes. Wherever possible they make use of the cell's machinery to accomplish the steps involved in their own reproductions
a. a mutation that makes it impossible to deoxyribonucleotides to bind to the polymerase active site of DNA polymerase I b. a mutation in the coding sequence of DnaA in E. coli.
A species of tree has a very large genome consisting of 2.0x10^10 base pairs of DNA per diploid genome. Assume that each diploid cell contains 10 chromosomes of similar length.
In mapping a large plasmid you notice that EcoRI yields 3 bands, HindIII yields four bands and you can detect at least 6 bands on the gel for HindIII/EcoRI digestion.
A uniform ladder of length l an weight 100 N rests against a smooth vertical wall. The coefficient of static friction between the bottom of t ladder and the floor is 0.5.
For the design include the independent variable, the dependent variable, two possible controls, and 2 units of measurement the researcher should use and what the unit should be used to measure.
A mouse breeder has a strain of black mice that normally breed true and produce only black mice. Occasionally, however, a brown mouse or two has appeared in litters of some of the mice.
TFIID (In reference to TBP-associated factors, RNA pol II)is a complex of multiple proteins. It is considered a basal factor and is pretty much always going to be binding to initiate transcription i
What is the term for organisms that obtain energy and nutrients (building blocks for new molecules) by consuming organic material produced by other organisms
A patient looses 1 liter of blood and is waiting for a blood transfusion to arrive from the blood bank. Would it be better to administer 5% dextrose or 0.9% sodium chloride to the patient. Why.
There are three main types of coat protein associated with transport vesicles. What is the general purpose of these coat proteins? and where would each of the three types be found in the exocytotic
One way of regulating eukaryotic gene expression is to control the life time of the messenger RNA. mRNA degradation occurs by different mechanisms.
A single gene controls color. When you crossed pure-breeding white-horned individuals with a pure-breeding black-horned ones, you got all gray-horned F1 offspring. You then crossed the gray-horned
In a population of 100 Walruses, 30 have short whiskers (the recessive trait). The rest of the walruses have long whiskers (the dominant trait) with 30 heterozygotes.
In fruit flies, the gene for eye color is sex-linked (X-chromosome) and red eye color is dominant over white. The gene for body color is an autosomal trait with gray dominant over black.
A third gene, designated C, is located 15 mu from B and 5 mu from A. A parental generation consisting of AAbbCC and aaBBcc individuals were crossed to each other. The F1 heterozygotes were then test
The human genome project initially predicted 100,000 genes due to the number of proteins found through western blots. When near completion, computer analysis of the sequence predicted only 30,000 ge
Parasites such as pinworms are often found in high densities in select human populations. What are the abiotic factors that you may consider if trying to control this parasite in a day care.
There are three main types of coat protein associated with transport vesicles. What is the general purpose of these coat proteins. and where would each of the three types be found in the exocytotic
After observing growth of a gram-negative organisms on a phenylethanol plate, does this negate the usefulness of phenylethanol as a selective medium. Why or why not.
Describe antigen-antibody selection, recognition in humerol immunity. Same question in cell-mediated immunity.
Define and contrast specific and non-specific immune responses. Explain what the main differences are.
Suppose that you transform a different strain of yeast (which does not contain these types of transposable elements) with each of the newly discovered transposable elements. You let each of the elem
In a biochemical pathway, three ATP molecules are hydrolyzed. The endergonic reactions in the pathway require a total of 17.3 kcal/mole of energy to drive the reactions of the pathway.
A heterzygous plant ABCDE/abcde is crossed with an abcde/abcde plant. Only the following progeny are found in the F1: ABCDE/abcde, abcde/abcde, Abcde/abcde, aBCDE/abcde, ABCDe/abcde, and abcdE/abcde.