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On a particular microscope, the numerical apertures of the condenser and medium power objective lenses are 1.25 and 0.25, respectively. You are supplied with a filter that selects a wavelength of 520nm. What is the limit of resolution on this microscope and will you be able to distinguish two points that are 330nm apart as being separate, or will they blur into one? Later on the same microscope, the high dry lens has a numerical aperture of 0.85. What is the limit of resolution and will you be able to distinguish two points that are 250nm apart as being separate, or will they blur into one?
A sample of h2O with a mass of 46 0 grams has a tempeture of -58 0 celsiuse how various joules of energy are necessary to heat the stream of 100 0 celsiuse to 114 o celsiuse if specific heat of steam is 2 01 g celsiuse.
Just before a physiology exam her ventilation increases to 18 breaths per minute from nervousness. Now what is her total pulmonary ventilation? Assuming her anatomic dead space is 120 mL, what is her alveolar ventilation in each case?
Monkeys infected with "Devil Pox" survive depending on their genotype at a single locus. AA individuals survive 50% of the time. AB individuals survive 75% of the time.
Which one of the following is not a good strategy for increasing the surface area of an object relative to the volume? A. increase the amount of branching B.increase the amount of folding C. make flatter D. enlarge and make more spherical E None o..
Explain in molecular detail how scientists could develop antibiotics that contact multiple sites on rRNAs and /or r-proteins within the bacterial ribosome.
how The information carried by DNA is incorporated in a code
Explain how adult stem cells can sense and respond to the nutritional status of an animal. Explain what kind of cues an adult stem cell can respond to, and where these cues are coming from.
Which increases the genetic diversity
Colchicine is a chemical that prevents the formation of microtubules. What would be the effect of adding colchicine to cells just before mitosis were to begin.
Radiation therapy for cancer works because a cell's DNA is exposed during mitosis and most vulnerable to damage from radiation. Because cancer cells are uncontrollably undergoing mitosis.
Describe why we have a cool dry winter and a warm wet summer in florida? Human population on earth has exhibited logistic growth. Why might this not continue?
A 65 year old man who worked for 30 years in a chemical factory complains of blood in his urine. urien cytology discoles dysplstic cells. A bladder biobsy demostates transtitonal-cell carcinoma. Which of the following carcinogen was most likely in..
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