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Question: Tina put a culture of Escherichia cells in a medium containing glucose and nitrate (NO3-) on a shaker and turned on the shaker for aeration. The next day she had a nice dense culture of cells. When she repeated this procedure, she forgot to put the culture on the shaker. The next day, she found that her cells had grown much more slowly than before. Explain why her cells grew more slowly the second time. When Tina grew her cells again, she forgot add the nitrate and forgot to put the culture on the shaker. This time she found that her cells grew particularly slowly. Explain why her cells grew so slowly on this final try.
Question: Describe the differences between phototrophy involving bacteriorhodopsin and phototrophy involving bacteriochlorophyll
Rarely, hens reverse phenotypic (not chromosomal dew late in life and develop into sprem producing males. If such a male were to be mated to a normal female,what sex ratio will be expected among the offsrping.
In turtles, brown shells and the red legs are most prevalent forms of the traits. Occasionally, green shells and yellow legs are examined.
The following experiments are carried out using a pure preparation of enzyme that catalyzes palmitate synthesis from acetyl CoA and malonyl CoA in presence of all the cofactors needed for reaction.If the acetyl CoA is labeled at the methyl carbon.
Within a population of plants there are two alleles that code for flower color, red and white. Red is the dominant allele. If there are 300 red flowers and forty-five white flowers,
A woman from the family with normal cholesterol marries a man with no LDL receptors, and all their children have cholesterol levels twice the normal of the mother.
If C-1 of glucose is radioactively labeled & then enters glycolysis, which carbon of G-3-P will be labeled? Determine what fraction of the molecules will carry radioactive label?
Cephalochordates and placental mammals both have microlecithal eggs, yet mammalian early development resembles that of birds more than that of amphioxus.
Compare and contrast, in depth, the cellular processes of mitosis and meiosis. Include interphase in your explanation. Chromosomal movement and status must be included in your answer. You may include a diagram to explain your answer but you should..
The 2.1kb long insert was excised from the source DNA using NotI. The insert fragment has 2 SphI restriction sites. One of these located 1.3kb from 1 end of fragment and other is located 0.2kb from other end.
If oxygen is unavailable, what happens to the citric acid cycle and if necessary, during which stage(s) of cellular respiration is(are) carbon dioxide released?
What common misconceptions about nature result from the phrase "survival of the fittest" as opposed to the phrase that accurately describes what happens in nature, "survival of those who are fit-for now".
Actions of the biceps brachii muscle include: supination of the forearm, Flexion of the shoulder, Flexion of the elbow.
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