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Injections of TC cells completely removed all Hepatitis B viruses from infected mice, but the injections killed only 5% of the infected liver cells. Explain how TC cells cured the mice.
A patient with AIDS has a low TH cell count. Why does this patient have trouble making antibodies? How does this patient make any antibodies?
Newborns (under 1 year) who contract dengue fever have a higher chance of dying from it if their mothers had dengue fever prior to pregnancy. Explain why.
A woman died from a Capnocytophaga bacterial infection introduced by a dog bite. Capnocytophaga kills only people who lack a spleen. What is the relationship between infection and the spleen?
Show your work. State the phenotypes of the two parents of the original wild-type fly.
Sidney Brenner discussed that the code was non overlapping because he considered that coding restrictions would occur if it were overlapping.
NASA hopes they may one day be useful in producing some electricity on a spacecraft. What mode of nutrition do these bacteria most likely use.
A biologist was testing E. coli for thymidine requirement. She found a thy- point mutant and wanted to study reversion to thy+. She grew 20 cultures of the thy- mutant strain.
What is the most important error in the design of Photosynthesis experiment? How would you modify the experiment to improve the design and correct this error?
Researchers want to identify the impact of cholesterol on the development of heart disease. They follow individuals who are vegan, and meat-eaters for ten years and they record if any of them experience a heart attack.
Batch and continuous sterilisation
Hypothesis: since the normal substrate for the enzymes is lactose, adding lactose along with ONPG will reduce the rate of yellow color formation.
If two chromosomes of a species are the same length and have a similar centromere placement but are not homologous, what is different about them.explain the concepts of homologous chromosome
A 10.0g sheet of gold with a temperature of 18C is laid flat on a sheet of iron that weighs 20.0g and has a temperature of 55.6C. Given that the specific heats of AU
Design an experiment to determine the optimal temperature for enzyme function, complete with controls. Where would you find the enzymes for this experiment?
A cross of black chicken (BB) with the white chicken (WW) produces all speckled offspring (BBWW). This type of inheritance is known as what.
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