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Q. Healthy individuals of Paramecium bursaria contain photosynthetic algal endosymbionts of genus Chlorella. When within their hosts, algae are referred to as zoochlorellae. In aquaria with light coming from only one side, P. bursaria gathers at well-lit side, while other species of Paramecium gather at the reverse side. The zoochlorellae provide their hosts with glucose and oxygen, and P. bursaria provides its zoochlorellae with protection and motility. P. bursaria can lose its zoochlorellae:
(1) If kept in darkness, algae die, and
(2) If prey items (mostly bacteria) are absent from its habitat, P. bursaria will digest its zoochlorellae. A P. bursaria cell that has lost its zoochlorellae is said to be "aposymbiotic." It might be able to replenish its contingent of zoochlorellae by ingesting them without subsequently digesting them.
Which of these situations would be most positive to the re-establishment of resident zoochlorellae, assume compatible Chlorella are present in P. bursaria's habitat?
Write a case study which detailing a scenario of a patient being investigated in the Haematology laboratory.
What is the most likely defect associated with the Ser63 deletion mutant. How would you design an experiment to test your hypothesis using culture cells and the expression construct of wild-type and Ser63 deletion mutant of P0.
We are told that every surface we touch is teeming with bacterial cells, and bacteria are found in the pools we swim in, water we wash with, and on the hands of friends. Why don't we always have problems with bacterial infections all over our bodies.
How, at what time the shoot tip touched the other plant's stem did the shoot switch from growing straight to growing in a spiral? Write down a hypothesis first.
Black coat of animal is dominant; white is the alternative recessive. While true-breeding black is crossed to true-breeding white, what is the possibility that a black F2 is heterozygous.
Drag the labels onto the graph to indicate which presynaptic neuron produced each change in the axon hillock's membrane potential. Assume that the same number of ligand-gated ion channels opens at each synapse.
The movement of glucose into a cell against a concentration gradient is most likely to be accomplished by which of the subsequent. movement of glucose into the cell through a glucose channel.
Though, at the restrictive temperature, the minimum size required to enter mitosis is decreased greatly; as a result, diminutive daughter cells are produced.
Compute the change in energy of an atom that emits a photon of wavelength 2.21 meters. (Planck's constant is 6.626 x 10-34 joule seconds; the speed of light is 2.998 x 108 m/s)
Upon completion of genome sequencing projects, how do scientists usually go about asking how many genes there are in genome and where they are located.
Where does the label show in mevalonate. A spherical ball of solid, nonporous naphthalene (as in a "moth ball") is suspended in still air; naphthalene ball slowly sublimes, releasing the naphthalene into the surrounding air by molecular diffusion lim..
What could be expected phenotypes, and in what number will the y be expected? Suppose no linkage.
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