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Q1. If substance is less concentrated outside a cell than inside the cell in which direction is that substance probable to diffuse across the cell membrane?
Q2. A clinical microbiologist makes serial dilutions of several antimicrobials in broth, and then incubates each drug dilution series with a standard amount of a patient's isolated pathogen. What is this micro biologist setting up?
Q3. In birds, sex is determined by a ZW chromosome scheme that is much like the typical XY scheme seen in humans and many other organisms, except that the system is reversed: Males are ZZ (similar to XX in humans) and females are ZW (like to XY in humans). A lethal recessive allele that causes death of the embryo occurs on the Z chromosome in pigeons. What will be the sex ratio in offspring of a cross between a male heterozygous for the lethal allele and a normal female?
q1. healthy individuals of paramecium bursaria contain photosynthetic algal endosymbionts of the genus chlorella. what
Genes for color blindness and hemophilia are linked on the X-chromosome in humans with a recombination frequency of 30 %. A woman whose father was a color blind hemophiliac.
What does green growth on an Eosin methylene blue plate indicate and which two organisms are known to be able to do this?
Compare the recipes of nutrient agar and HE agar. If an organism can grow on both media, on which would you expect it to grow better? Why?
Calculate the steady state concentration of radon in the huse assume the ambient concentration is negligible. What is the genus of these bacteria.
In an experimental situation, a student researcher inserts an mRNA molecule into the cytoplasm of a eukaryotic cell after she has removed its 5' cap and poly-A tail.
You want to make one liter of a solution containing 10 mg/ml sodium phosphate, 10 mg/ml sodium chloride, and 10 mg/ml potassium nitrate. How much of each starting solution do you need to use, and how much water do you need to add
Discuss and explain how do girls and boys differ in bullying behavior? What are some of the emotional consequences of being bullied?
How can you have a character that is lost, but is the derived state of that trait?
On the Pacific island of Guam, large herbivorous bats called "flying foxes" commonly feed on cycad seeds, a potent source of neurotoxins. The flying foxes do not visit male cones. As a result, what should be true.
Describe the bacterial chromosome and outline the process by which it replicates by the semi-conservative method of replication.
A human cell has 10^14 cells and each human cell has about 6.4x10^9 nucleotide pairs of DNA. What is the length of double helix that could be formed from this amount of DNA in a human individual?
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