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Q1. Suppose after washing your hands, you leave ten bacterial cells on the new bar of soap. You next decide to do a plate count of the soap after it is left in the soap dish for 24 hours. You dilute 1g of the soap 1:10 and plate it on a standard plate count agar. After 24 hours of incubation, there are 168 colonies. How many bacteria were on the soap? How did they get there?
Q2. Some photosynthetic bacteria (for example purple sulfur bacteria) have photosystem I but not II, while others have both PSI anxd PSII. Which is the might this observation implies?
Clarify the principle and advantage of using a rapid identification system. what is the probability that a son born to this woman would be phenotypically normal with respect to both of these traits.
Compare and contrast prokaryotic and eukaryotic cells. If shape and colour of radishes are both due to genes with partly dominant alleles, crossing two dihybrid heterozygotes will produce how many different phenotypes.
Name the bones of pectoral girdle and the bones of the pelvic girdle. Evaluate the pectoral and pelvic girdles with regard to strength, versatility, and function.
t is well known that rubbing a minor wound inhibits the sensation of pain that an individual is experience. Please design a circuit that would explain this phenomenon (i.e., how would you put together a set of neurons in the spinal cord or beyond to ..
At the present we know that over 99 percent of the time, glucose occurs in the closed-ring form. What likely difference between these forms would give chemists a clue that the open-chain form was not present.
In a population with two alleles, A and a, frequency of A is 0.2. Organisms that is homozygous for A die before reaching sexual maturity. In five generations, what will be the frequency of individuals aa with genotypes.
Suppose the diameter of the field of vision in your microscope is 2mm under low power. If one Bacillus cell is 2 micrometers how many Bacillus cells could fit end to end across the microscope? How various 10 micrometers yeast cells could fit across t..
On average, how many complete turns would be in each chromosome. The human gametes have about 3 billion bp of DNA in their chromosomes.
Clarify the difference in their efforts to collect oxygen. Polychaetes have lateral, fleshy parapodia beset with numerous setae, and well developed head appendages such as jaws, tentacles and eyes. What function(s) do you think about parapodia serve.
Briefly explain why this mating produces a triploid individual. Why can mitosis proceed normally in triploid cells, but meiosis cannot.
If there 2000 offspring from this cross, how several of the offspring will you expect to show Ab or aB phenotypes. If the estimated output is 30000 units, which machine must be purchased.
What techniques might be used to characterize the structure and composition of the structure. Which of the follow will the nurse include in her teaching plan for this patient.
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