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Q1. An experiment is designed to study mechanism of sucrose uptake by plant cells. Cells are immersed in a sucrose solution, and pH of the solution is monitored with a pH meter. Samples of the cells are taken at intervals, and sucrose in the sampled cells is measured. The measurements show that sucrose uptake by the cells correlates with a rise in the pH of the surrounding solution. The magnitude of the pH change is proportional to the starting concentration of sucrose in the extracellular solution. A metabolic poison known to block capability of cells to regenerate ATP is found to inhibit the pH changes in the extracellular solution. Suggest a hypothesis accounting for these results. Propose an additional experiment to test your hypothesis.
Q2. A researcher lyses a cell that contains nucleic acid molecules and capsomeres of tobacco mosaic virus (TMV). The cell contents are left in the covered test tube overnight. The next day this mixture is sprayed on tobacco plants. Which would be expected to happen?
Elucidate where they came from with an easy diagram. The 10 with normal wings also have mutant green eyes and mutant hairy legs.
What are genotypes of all the individuals mentioned in this difficulty. What is the point of the agar dish not treated with X-gal.
Sort the statements into appropriate bins depending on which type of learning they explain. What is her anatomical dead space volume.
A fish on the outside of a school swims inward, leaving other fish on the edge. These new "edge" fish then move inward and the cycle repeats.
If one assumes that Hardy-Weinberg equilibrium applies to population of colonists on this planet, about how many people will have attached ear lobes at what time the planet's population reaches 10,000.
Male frogs give calls that attract female frogs to approach and mate. Researchers examined mating calls of closely related tree frogs in South America. What outcomes be able to occur where the ranges of two species overlap.
The use of PCR and genetic approaches in biotechnology
Why can there be dissimilarity between heart rate averaged over 15 seconds and instantaneous heart rates. Suppose that green turtle grass ingestion time for the sea urchins has an approximate normal distribution.
While Mexican hairless dogs are crossed with normally haired dogs, about half the pups are hairless and half have hair. While, though, two Mexican hairless dogs are mated, about a third of the pups produced hair, about two thirds are hairless and som..
Dynein is missing from cilia and flagella of the individual with a specific inherited disorder. These individuals have severe respiratory problems, and if males, are sterile. What is the structural relationship between these 2 symptoms.
Spiny species of diatoms are found both in warm subtropical waters in addition to in colder areas. Since warm water is less dense than cold water, would you predict any differences between the spines of warm-water and cold-water individuals? Why.
Compare and contrast gene expression in prokaryotes vs. eukaryotes from the standpoint of promoter sequences
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