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Q1. Describe the controlled experiment that might have produced the data shown for either temperature or pH on enzyme activity. Be sure to declare the hypothesis that was tested here.
Q2. An RNA molecule has the follow percentages of bases: A= 23%, U=42%, C=21 % and G=14%. Is this RNA single stranded or double stranded, how may you tell? What would be the percentages of bases in template strand of the DNA that contains the gene for this RNA?
Assume that a mutation occurs in an intron of a gene encoding a protein. What would the most probable effect of the mutation be on the amino acid sequence of that protein?
It is frequently when the environment changes in some way that is unfavourable to an existing population that the organisms begin to reproduce sexually. Explain the importance of this switch from asexual to sexual reproduction.
How is the lifestyle of many radially symmetrical animals different from that of bilaterally symmetrical animals? Explain how the body plan complements the lifestyle using two animals as examples.
The oldest rocks on Earth date from about 4.2 billion years ago. What does this propose about the interval between 4.6 billion years ago, while the Earth started to form, and 4.2 billion years ago.
How is geological energy different from biological energy. Charlie has the blood test that shows a normal level of LDLs other than an elevated level of HDLs in his blood. Because his family has a history of cardiovascular disease, he wonders if he mu..
Select appropriate symbols for the alleles of the height and flower colour genes. List phenotypes and predicted ratios for the F2 generation.
A black A/A B? B C? C is crossed with a colourless a/a b/b c/c to give a black F1. The F1 is selfed. What proportion of the F2 individuals is colourless.
You get a soil sample and run an enrichment culture on it. You give the organisms in the culture with all of the ingredients required for growth except for nitrogen. What result do you expect to have at the end of the experiment.
In a discussion of plant move from water to land, what is the differentiation of the subterranean root? Someone please help me with a "layman's" explanation!
What is the most possible explanation. Cultures from dialysate concentrate and the internal areas of the dialysis machines were negative; iodophor from a small in- use plastic container yielded a pure culture of P. aeruginosa. What improper method le..
Some times in the movie, politics of science were discussed. Explain how politics played a role in the discovery of DNA structure. Do you think the science of today is more or less political than it was during the 1950s? Examine one instance of moder..
When a tropical moth is touched on the thorax it lifts its forewings up abruptly, exposing its brightly coloured hind-wings. What causes the moth to behave this way? What significance can we attach to the fact that the verbal ability scores of ado..
Frank found himself in the midst of an ethical dilemma at work, and was using an ethical decision-making matrix, to address his work and personal values. Frank was most likely in which phase of the Ethical Decision-Making Framework.
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